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Verified reviews for Quiet Cool Whole House Fans 


5.0 out of 5 stars These pull air like crazy, so quiet and take less energy then ...

May 14, 2017

Verified Purchase

Finally installed these and WOW! These pull like crazy, so quiet and take less energy then our original fan. These are awesome and I think all houses should have these installed. WOW what a great difference. The install is not hard at all... just find a place, cut the hole and drop in. The hardest part is finding where to get power and just takes a bit of time. highly recommended these.

5.0 out of 5 stars and moves a good amount of air

September 1, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

This is the only way to do a house fan. It's no louder than the AC running, and moves a good amount of air. I installed it in a 2100sq/ft house, and wished I had the larger one, but didn't have the space or vents to support it. The 4700 works great and the dampers are great compared to the normal slates on other house fans.

Yes, it is expensive, but if you have ever heard a normal house fan you know you don't want to listen to it for more than 15mins. I leave this running for 8+ hours with no issues.

If you are comfortable wiring, the motor in this unit is the same of the stealth (Contractor Only) model and has the yellow wire for the medium speed. Medium has become the most used setting. Low is almost silent, but doesn't move enough air to drop the temperature significantly, but great to let run throughout the night.

Long story short, if you are even reading this, buy it, you won't regret it.

5.0 out of 5 stars Extremely Quiet and Super Powerful! Highly Recommended!

May 27, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Great quality and craftsmanship, easy to install, extremely quiet, and super powerful!

We purchased this whole house fan to reduce our electricity bill and keep our 2,000 sq ft house cool at night. It took a few hours to install (including the wall switch and timer that Amazon recommended based on other customers who purchased this product). Later that evening, we turned it on for the very first time and it was SO quiet, we assumed it wasn't working or that I didn't wire it correctly. After seeing the dampers creep up and feeling the cool air come through our open windows, we were thrilled!

It's been two months since we installed this unit and we are enjoying having a reduced electricity bill and cool/fresh night air. We open two windows (each on opposite sides of the house) and it keeps our house at a comfortable 68 degrees (which makes for a very restful sleep), while pushing all the hot air out of our attic, which makes a huge difference the next day when it's 90 degrees outside.

There are two power settings - Low and High. We always use the low setting, which reduces the temperature of our 2,000 sq ft home from 78 degrees to 68 degrees in a matter of 1-2 hours (when it's about 54 degrees outside).

I highly recommend this product for anyone considering a whole house fan who lives in a warm climate like we do and enjoys the cool/fresh night air. Once you install one, you'll be asking yourself why you didn't do it sooner.

5.0 out of 5 starsHappy happy

July 1, 2016

Verified Purchase

One of those life-changing things. Should have done this long ago. Well worth the extra bucks over those $250 propeller-in-ceiling things. Those are noisy, this is quiet, and really pulls the air through the the house. Reasonably easy to install for a handy DIY'er. I'm happy, and even more important, my wife is happy. If you're thinking about it, get it.

5.0 out of 5 stars Why did we wait so long to get these?!

December 28, 2017

Style: ES-3100Size: 3068 CFMVerified Purchase

I had this fan on my wishlist for a very long time and am so glad we finally got it. Actually, we purchased two whole house fans: this one for the main living area, and an ES-1500 for our master bedroom, which we can use at night when our door is closed. They work great -- even better than expected. As soon as it's cooler outside than it is indoors, we can open windows, turn on the fans, and let the cooling begin!

The way the QuietCool fans are constructed allows them to run much quieter than fans that sit right on the ceiling joists.

We ended up having to add more roof vents to allow the air to escape because we didn't have enough ventilation and so pressure built up in the attic and warm air pushed back into the house. Once the additional vents were installed, these worked like a charm.

5.0 out of 5 stars My favorite whole house fan!

June 7, 2015

Style: ES-4700Size: 4505 CFMVerified Purchase

I've had whole house fans in all my homes since I was a kid. With the right size fan, there is little need for air conditioning and are a fraction of the cooling cost. This is my first of this style where the fan is not installed directly in the ceiling. I had to separate the duct from the fan in order to get it into the attic but reattaching it was very easy with the right tape. The fan motor inside the housing had shifted slightly in shipping so the blades rubbed, but it was easy to resolve without having to loosen any hardware. I wired it for two speed and just followed the instructions that came with it. I ordered the high/low switch and timer from Amazon at the same time. The fan does come prewired with a power cord but will only run on high speed. The shutters are always a challenge with other fans, they are typically flimsy and not very attractive and often won't open all the way without tweaking. This unit comes with a shutter box that works great and seals fairly tight when closed. It's hidden behind a standard HVAC style grill. On low, I can't hear the fan at all while the high efficiency motor is using the energy of a 45 watt light bulb. On high, it's noise level is the same as if the air conditioning blower was on. Super quiet. First day of use it was 74 inside and really stuffy as it started to rain outside. I turned the fan on high, and two minutes later it was 71 in the house with fresh air (68 outside). I've always recommended whole house fans, especially If you prefer fresh air over a closed up house. This unit is by far my favorite so far, easy to install, very efficient DC motor, a shutter that opens all the way and closes fairly tightly, and, it's so quiet, you might forget it's on.
My HVAC intake is in the ceiling, so I installed the shutter box in the HVAC intake duct to prevent cutting another hole in the ceiling, but like I said it comes with a very nice grill cover of its own. If you have an older home that isn't sealed as tightly as new ones, I recommend you get a fan that is one size up from the one recommended by the website for your sq ft to compensate for the air leaks. The tighter your home is sealed, the smaller a unit you need.

5.0 out of 5 stars Great cost-benefit value. Very quiet. A handy homeowner with basic electrical skill can install!

October 6, 2018

Style: ES-5400Size: 5,422 CFMVerified Purchase

We don't have an air conditioner, but after a hot day, our evenings get nice and cool in the 70s (F). I bought this to help suck out the hot air in the upstairs bedrooms and house in general and pull in that cool outside air. Installation was very easy and the design is very well thought out. I cut the ceiling opening with a jigsaw (I have lath and plaster), but a drywall hand saw would normally work. Then, you need a hammer, screwdriver, drill (to speed up screwing), wirenuts and barely anything else. The fan is designed to fit up through the opening you cut, if needed (i.e. if it won't fit through your attic access hole). Very simple but solid design (pretty much all metal), very simple installation. I love it! I opted not to get the wireless fan control since as of 7/2018 there were many complaints of wireless disconnecting and having to reset it. I bought the 2-speed, multi-hour timer dual wall switch, sold here: Again, easy to install and works great.

5.0 out of 5 starsI Connected It To A Smart Plug

September 16, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

After receiving this item, I didn't hesitate and opened the box to check out exactly what I had. Right away after unboxing I plugged into the wall to see if it worked before I installed it. About 1.5 hours later, I installed it and was up and running. I didn't do a hard wire. I ended up plugging it into a wall outlet in the attic with the WeMo smart plugs. Now I just tell Alexa to turn on the fan. I can use the WeMo app on my phone to turn On and Off as well and even set up timers. The house is fresher than it's ever been! Highly recommend!

5.0 out of 5 stars Hands down, great product.

September 29, 2018

Style: ES-7000Size: 6,878 CFMVerified Purchase

Fantastic product, but I do wish that the flexible duct material was made to better fit through standard attic openings, it was incredibly difficult to get through and it was even worse if trying to go through the cut out. It's so critical to get that in the attic without damaging the material. Otherwise, love it. Quieter and more effective than I expected. Also, I wish that instead of press fitting to hold the base together, I wish it was held together via screws, I ended up having to add some self tapping sheet metal screws to hold it all together firmly.

5.0 out of 5 stars Efficient, quite and cleaner way to cool down your home

February 8, 2019

Style: ES-3100Size: 3068 CFMVerified Purchase

We had the the traditional whole house fan for years and it provided a way to cool down our home quickly, but was very loud. It wasn't till we had our duct work and insulation updated we found out we couldn't seal the attic space due to this fan.I did my research and found about the Quiet CoolQC ES-3100 energy saver fan. I read several positive reviews and talked with several Heating and Cooling Companies and we were convinced this was the way to go. It's much quieter and energy efficient way of cooling and bring fresh air to our home. Now we don't have to worry about dirt and debris from the attic falling through the louvers into our living space. We were able install it ourselves with help of an electrician to wire it properly.

5.0 out of 5 stars Great fan for Hawaii

May 21, 2019

Style: ES-2250Size: 2261 CFMVerified Purchase

Installed this fan in our 80's home, no insulation and the jealousy style windows. Works GREAT, cools the house down a town. Previously after a long hot day it would take all night to cool the house down, now the air circulates so well its a matter of 20 minutes and the house is cool. Windows are always open in our place anyway and this creates a breeze no matter if its Kona winds or not. Noise is low/mid level, cant really hear it when im sleeping. Honestly unless your standing under it its hard to tell its on. Almost like the dryer, you can kinda hear it but unless your in the same area you cant be sure.

4.0 out of 5 stars Cools house, use less AC

September 7, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Before this, I had a system of 4 box fans in various windows to cool the house at night and reduce AC usage. This replaces those with one simple unit that is easy to turn on and off. It doesn't do much better than those 4 fans, so it wasn't the life-changing addition I was hoping for. Get a two speed switch and timer before installing!

4.0 out of 5 stars As my 7 yr old says I can actually take a nap

June 21, 2018

Style: ES-5400Size: 5,422 CFMVerified Purchase

It works as advertised - a WHOLE lot quieter than the traditional belt-driven fan we replaced. On low it still moves plenty of air but is nearly silent. My issues were with installation - it is FAR from easy. Some of my problems were from the attic space and joist spacing in my old house - I had to remove the flange in the sides of the box (as directed) but now the screws to hold the grate don't hit anything on the sides. The motor is also a bit of a struggle to hold up and screw in the straps, and I'm not sure how long the cloth strap for the duct will last since on screw tore straight through it. If you're hardwiring it make sure to get a better strain relief for the handy box, since two wires won't fit through the existing one they use for the plug-in cord.

5.0 out of 5 stars Wish I had Bought this Years Ago!

September 24, 2018

Style: ES-5400Size: 5,422 CFMVerified Purchase

I live in the Bay Area suburbs, where temperatures regularly reach (or come close to) a hundred degrees for about a month during Summer. Our house doesn't have AC, and this period (though relatively short) has always been brutal.

We bought this house fan based on two key features: It is billed as being less noisy than other house fans, and it is relatively easy to install. Both selling points are incredibly accurate. I would highly recommend this to anyone who lives in an area with hot days and cool nights; it's made our worst Summer nights pleasant for sleeping. It's not a magic bullet- it still gets hot in the daytime, but I no longer have to dread sleeping in a hot room.

5.0 out of 5 stars Love it! I wish I'd purchased one of these years ago...

June 8, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Love it! I wish I'd purchased one of these years ago. The install was very easy and the instructions were easy to follow. I installed using both the timer and the two speed switch. It pulls the air in through open windows so well, that we often just run it on low speed. You really get a nice breeze through the windows when they are open a few inches or so, depending upon how many windows you have open at a given time. The only really minor thing I noticed was that while our fan was advertised as a two speed fan, the wiring instructions didn't list our model. It must have been a misprint because I went to the manufacturer's website and looked at the instructions and my fan was listed in the wiring diagram. It's actually in the printed version, but they left my fan model number off the printed instruction so not a big deal. I love the fan!!!

4.0 out of 5 stars Works Great! Highly Recommended.

April 6, 2019

We've always loved whole house fans, they work well for our climate and bring in cool fresh air.

5.0 out of 5 stars Incredible, and silent!

June 29, 2018

Style: ES-4700Size: 4505 CFMVerified Purchase

I was previously using an old-style fan where the fan sits right on top of a vent in the ceiling. Even on low that fan was so loud you couldn't talk comfortably in the same room, and watching TV was out of the question.
The QuietCool moves an INCREDIBLE amount of air, while still being quieter than my kitchen rangehood fan and bathroom fans. It moves so much air that there is a noticeable breeze in the kitchen where the intake is.
On low speed it moves about as much as my old fan did on high, and its almost completely quiet.
Installation was pretty simple, although the mounting clamp holding the hose to the fan broke and I was unable to undo it in the end.

5.0 out of 5 stars Just what I needed

May 27, 2019

Style: ES-4700Size: 4505 CFMVerified Purchase

When I first turned this on I didn't think I was going to like it. The only house fan I had seen before was like a jet engine in a small house. The air was sucked out so fast. This one in my two story didn't sound like much. Also, when I installed it, it was the same temp outside as inside. So I waited. When it became hotter in the house and cooler outside, I tried the fan again. Worked beautifully. The kids were able to sleep upstairs. I could feel the air pulling in from my master window on the first floor that never seem to catch the breeze. I just used it. I tend to turn the air on really early, and haven't yet. Which, considering we've had some hot days (80°) with our cooler nights (60's), is surprising. Really really happy with it. Bought the rf transmitter/receiver to go with it. Didn't have to rewire house and does low/ high and can use different programs.

4.0 out of 5 stars Very nice, I'll get a second one for our addition.

July 25, 2015

Verified Purchase

Pretty great. The sheet metal parts are not cut or crimped perfectly square which caused me to have to bend things to fit. Lots of very sharp edges. I know this is typical of Hvac stuff, but this is a premium product at a premium price so more care should be taken in the manufacture. The duct even came off the register duct as they only use tape. I added screws and more tape and it's good now.

9 people found this helpful

5.0 out of 5 stars So comfortable! This model replaced a 1960 fan as loud ...

August 14, 2017

Style: ES-3100Size: 3068 CFMVerified Purchase

So quiet! So comfortable! This model replaced a 1960 fan as loud as a rocket launcher. What a difference!

4 people found this helpful

5.0 out of 5 stars This was perhaps one of my best home upgrades as I’ve never had a whole house ...

May 30, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

I purchased this last 2 weeks ago and it arrived quickly, installed within 3 hours without problems, and works oh so well! This was perhaps one of my best home upgrades as I’ve never had a whole house fan and this really pulls air in and it’s not very loud!

5.0 out of 5 stars Five Stars

February 20, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Effective, quiet and powerful.

5.0 out of 5 stars The perfect name for this amazing whole house fan!

May 13, 2019

Style: ES-7000Size: 6,878 CFMVerified Purchase

LOVE, LOVE, LOVE this fan! We have had the traditional whole house fans in our prior 2 homes... but the Quiet Cool blows those fans away (no pun intended)! It is soooo quiet and the amount of air pulled through it is amazing. I installed the fan (easy) but called Electrician to do the wiring and tap into electricity in the attic. My electrician was so impressed he said be was sold on Quiet Cool and is going to buy one for his home. It's more expensive than traditional whole house fans, but in my opinion, totally worth it. We love it!

5.0 out of 5 stars We are VERY HAPPY with our selection of the QC ES-4700

December 20, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

We are VERY HAPPY with our selection of the QC ES-4700. I wanted the ability to run on low speed for lower energy usage and noise. We installed in our hall, the unit is barely audible from the living room when on high.

5.0 out of 5 stars So worth the money

May 1, 2019

Style: ES-3100Size: 3068 CFMVerified Purchase

So far best money ever spend. Spring early summer in SC has the best nights where the temperature drops 10+ degrees. Bringing the outside in is fantastic. May still need AC when full summer hits but will ride this breeze as long as possible

4.0 out of 5 stars Cools house

August 31, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

i live i a coastal area. My house, and attic, get hot, just about the time of day it starts cooling outside. I bought one size up to make sure it was powerful enough. i get a great breeze through the house. Only downside is the low setting. Can barely feel any effect in the house. However, the high setting is great.

5.0 out of 5 stars Amazing energy efficient upgrade!!!

October 9, 2018

Style: ES-7000Size: 6,878 CFMVerified Purchase

Couldn’t be happier-my wife calls this the magic fan! Pulls an actual breeze through our house and cools overnight. I actually didn’t use my A/C in Aug or Sept since installing (in SoCal). Note that self-install does require one to be fairly “handy”, but with basic skills is no big deal as long as you have room to move in the attic.

5.0 out of 5 stars Works Great, very quiet

September 21, 2018

Style: ES-7000Size: 6,878 CFMVerified Purchase

Great product and well put together package. From register grate, damper, duct, to the actual fan. Wiring diagram is a little out of date for the Green soft start fan, but not insurmountable.

One person found this helpful

5.0 out of 5 stars Fabulous hot air evacuator

May 11, 2019

Style: ES-3100Size: 3068 CFMVerified Purchase

Fabulous product❗️Was installed in about 4 hrs by 1 person. This is quiet compared to other whole house gear driven fans. Does exactly what it’s suppose to do 👍🏻👍🏻

5.0 out of 5 stars Best home appliance purchase I have made in a while

September 7, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

Best home appliance purchase I have made in a while. Isn't totally quiet but it's not obnoxious. It really works well especially in the upstairs bedrooms. Was worth the money.

5.0 out of 5 stars The Worst Part was Installing the power Outlet in the Attic

September 20, 2018

Style: ES-5400Size: 5,422 CFMVerified Purchase

Installing this fan was some work. Figuring out the power was a little chore and a dirty environment. I bought disposable overalls for moving that insulation around. Wired the fan before taking it up. It all worked.

4.0 out of 5 stars Don't know why we waited.

September 1, 2017

Style: ES-5400Size: 5,422 CFMVerified Purchase

Bought this unit for our 2000sq ft. ranch-style home. We had to add some additional exhaust venting, but installation was pretty straight forward. The ES-5400 does an awesome job, cooling our home. Once the outside temp. hits 86-87 degrees, we open windows, and turn on the ES-5400. At that exterior temp., the house feels like we're running the AC, set at about 75 degrees. Phenomenal! We wired the units to a double switch, so we can run both fans (as the high setting), or just one (as the low setting). So far, we could not be happier. I should also mention the noise that the ES-5400 creates...., almost none. With both fans running, the sound is comparable to a single box fan. Money well spent!

5.0 out of 5 stars What a great purchase. Easy install especially since the power source ...

July 24, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

What a great purchase. Easy install especially since the power source was already available and the wall switch with timer was an added bonus. Had to learn which windows to open to create the best air flow through the home but every house will be different.

5.0 out of 5 stars Five Stars

September 19, 2017

Style: ES-3100Size: 3068 CFMVerified Purchase

Works great to cool the house 🏡

5.0 out of 5 stars This whole house fan is wonderful for Southern California

July 17, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

This whole house fan is wonderful for Southern California. I do not use air conditioning at all!!! It's quiet, I bought the timer switch so it turns itself off in the middle of the night (highly recommended or it would be freezing!) the electrician had no issues installing it. Very, very pleased!!!!!

5.0 out of 5 stars Very quiet. Powerful

April 20, 2019

Style: ES-4700Size: 4505 CFMVerified Purchase

This was very easy to install. After we had all of it setup and wired with switches it makes no reason to run your A/C. Nice breeze through house

5.0 out of 5 stars Five Stars

September 7, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Great on hot days cool nights really sucks out hot air and cools house.

5.0 out of 5 stars Runs almost silent.

March 16, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

We downsized the whole house fan because we will use it to draw air in during the spring and summer months. I'm also using it when I'm cooking. It's so quiet and so strong we have to brace a door to help us remember to turn it off (on low). Love it. Love the quiet. Absolutely worth the money.

5.0 out of 5 stars Great and QUIET FAN! Easy install

July 23, 2018

Style: ES-2250Size: 2261 CFMVerified Purchase

Easy install, easy wiring. Only thing is the manual that was sent was old because it didn’t have the right specs but there was a correct pdf version on their website I was able to use for the wiring.

5.0 out of 5 stars a/c for the bay area!!

September 28, 2018

Style: ES-5400Size: 5,422 CFMVerified Purchase

works like a charm! On hot days, turn that sucker on and the house cools down instantly! perfect for our climate here in the S.F. bay area!!

5.0 out of 5 stars Better than expected

May 4, 2019

Style: ES-4700Size: 4505 CFMVerified Purchase

Had a regular whole house fan in last home. It sounded like a helicopter. So loud. Love this fan. Installed timer and hi/low switch no problems. Wife loves how quiet it is. Saving $$ for sure.

5.0 out of 5 stars Fresh cool air!

August 8, 2016

Style: ES-2250Size: 2261 CFMVerified Purchase

Installed easily and does it's job well. Low profile grill and very quiet. I put this in the hall near my kitchen and living room so it cools the entire area very quickly when the outside temp drops and windows are open.

5.0 out of 5 stars Five Stars

March 16, 2018

Style: ES-2250Size: 2261 CFMVerified Purchase

Great fan, but I wish I went with the bigger model. Does it's job.

5.0 out of 5 stars Great Fan! Recommend upsizing from recommendation!

July 23, 2018

Style: ES-2250Size: 2261 CFMVerified Purchase

Ordered the ES-2250 a couple of weeks ago and installed this weekend. It is a well engineered product, with quality construction. It came well packaged and without damage. I live in a smaller home, but decided to upsize the unit from the recommendation...and I am so glad I did! The sizing of the fan is highly dependent on the construction and site orientation of your home. I live in a solar home, utilizing both active and passive solar opportunities. I have large, south facing, windows that allow heat to build quickly in the home. This fan is wonderful in drawing in outside air for cooling. It is quiet! If in doubt, upsize the can always turn it off. But a fan too small will leave you wanting more. The installation instructions could use a little help. They are oriented towards installing the fan in a completed home....if you are under construction there's not much help for simple things like rough opening sizes for framing, etc. But, in the end, it's easy to figure out.....I highly recommend for those climates that have warm days and cool nights. I suspect if you live in a hot, humid climate this (or any other fan) probably won't help you out much. A final thought, the simple on/off or timed controls work as well as one would expect...but if a more sophisticated approach of sensing inside/outside temperatures with set points was available, it would allow for a more automated solution. I highly recommend!

5.0 out of 5 stars A total MUST HAVE!!!

August 27, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

This is TOTALLY unbelievable to me how GREAT this is. I just had this installed on Thursday, 8/25/16, and it is making a huge difference. I have a thermometer in my attic, in the morning when it would be 58 degrees outside my attic on our 2007 built home would be close 86 degrees, inside the house it would be 77 degrees. Thursday night, the first night, right around midnight I had to dig through our closet and pull out our winter bed cover because we were freezing. When I woke up in the morning it was 62 degrees outside, in the attic and our house was 67 degrees. The house held that until around 4:30 pm when it was 98 degrees outside, inside the house it finally hit 78 degrees and the attic was 105. Today is the third day I've had it 8/27/2016 and I checked my energy usage. All summer I consistently use between 50 and 60 kWh during the day. Yesterday, hot as usual here in SoCal, I use only 29 kWh (((HALF))) the energy I normally use. Right now 7:10 am it is 62 degrees outside, inside my house it is 67 and my attic is 68. Don't wait like I did, get it!

4.0 out of 5 stars Powerful energy efficient fan!

September 30, 2018

Style: ES-4700Size: 4505 CFMVerified Purchase

Great fan! Its a little expensive for the construction quality of the inlet box.

5.0 out of 5 stars You need to know how to wire things up.

August 5, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Best thing I ever bought for the house!!!! Works like a charm!!! I put the Hi/Low switch in and the timer.

5.0 out of 5 stars Easy to install

August 25, 2015

Style: ES-4700Size: 4505 CFMVerified Purchase

Easy to install. High speed works great and moves tons of air. But the low speed can not be the rated CFM, it moves very little air.

5.0 out of 5 stars Five Stars

May 28, 2018

Style: ES-2250Size: 2261 CFMVerified Purchase

works great and is quiet


5.0 out of 5 stars Five Stars

September 5, 2017

Style: ES-5400Size: 5,422 CFMVerified Purchase

works great and very quiet.

5.0 out of 5 stars Five Stars

June 28, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Great product!

5.0 out of 5 stars and there's a nice soft air-flow from all open windows thanks to this ...

May 16, 2018

Style: ES-3100Size: 3068 CFMVerified Purchase

Installed it myself but got an electrician to wire it for me, as I'm a beginner and my attic had only 12-2 gauge available. Testing it out for the first time tonight-- brought my house down from 80 to 72 in about a half hour, and there's a nice soft air-flow from all open windows thanks to this fan. Hope it helps during the hot days this summer!

One person found this helpful

5.0 out of 5 stars Five Stars

April 19, 2015

Style: ES-3100Size: 3068 CFMVerified Purchase

Easy installation. Fan noise minimal.

5.0 out of 5 stars Five Stars

July 9, 2017

Verified Purchase

so far so good

4.0 out of 5 stars a very good product.

July 6, 2015

Style: ES-4700Size: 4505 CFMVerified Purchase

At low speed, the noise level is less than a small room fan (great). At the higher level, it is not quite as quiet as advertised, but still not a nuisance at all. The instructions were clear (and helpful... especially the wiring lay-out), the installation into the ceiling could not have been any easier, quite honestly.
Just short of 5-stars as the hanging of the unit was NOT overly simple. The metal bands are, of course, sharp on the edges... couple with the weight of the unit that is being held, made it a relatively difficult one-man hanging job.
Overall, a very good product.

5.0 out of 5 stars Five Stars

January 22, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

My way to pay Edison less money. It is very quiet!

5.0 out of 5 stars I like it!

October 9, 2016

Style: ES-4700Size: 4505 CFMVerified Purchase

much quieter than the old type that was mounted to the joists. I should have gotten the next bigger size, tho, as our house is 3000 sq ft. It will cool it down, but takes longer.

5.0 out of 5 stars An effective and inexpensive alternative to AC if you live in a moderate summer climate

April 30, 2016

In November 2015 we installed this fan in our 2,400sf tri-level home in Seattle. We hired a construction firm who was doing some light remodeling already and they charged us about ~$2,000 to install the fan plus two large painted 2x2.5' gable vents on either end of our attic to increase the hot air exhaustion in the attic when the fan runs. It took two experienced carpenters about two days to paint the gable vents, cut the holes in the house for them, mount and caulk the vents, and then mount the fan and drop an outlet for it with the two-speed switch and the available electronic timer. We put the intake vent directly above our stair well so the hot air is sucked straight up from all floors in the house.

We haven't tested in the hot July-August Seattle weather yet, but already, most of the time we just run it in the lowest speed setting (<300 watts). The amount of air it pulls in through the windows is phenomenal, even on on low speed! It's much quieter than a room fan (we sleep with it on, and the intake vent is just outside our master bedroom door). The specs say it uses about 180 watts on low speed and about 580 watts on high speed. A halogen floor lamp or your bathroom vanity lights use more energy than that! It is FAR more economical and environmentally friendly to use this fan to cool the house down during the afternoon and night than it is to run an air conditioner. We looked at installing a room air conditioner in our house (which doesn't have air ducts), it's about $8,000-$10,000 per room to install one, and the amount of energy they consume is enormous.

5.0 out of 5 stars This seemed like a much more cost effective solution and cools the ...

July 5, 2018

Style: ES-1500Size: 1,468 CFM

I got the ES-3100 because I am expecting a baby in July and last summer my house got up to 85 degrees insides. I got a quote for a single room mini--split system at almost $6k fully installed. This seemed like a much more cost effective solution and cools the entire house.

I must say, I have been AMAZED at how effective this is. The first time a turned it on I used the low power setting and it lowered my house temperature by 10 degrees in 2 hours. If you have the right climate where your nights are still cool in summer, than this thing is better than air conditioning.

There are a few things you should know though:

1. Don't buy the WiFi kit. If you want smart controls, just buy a WiFi light switch like a WEMO or an Insteon. They are cheaper and then you also get the option of manual control as well. The WEMO app also has a built in timer app so you can automate your fan.

2. To the manufacturer... You should definitely design an automatic controller for this thing which uses indoor and outdoor temperature sensors to automatically turn the fan ON when the outdoor temp is cooler than the indoor temp and then turns the fan on and off around a set-point temp. With a simple timer, the house gets cool but then when the fan turns off the air is re-heated by the thermal mass of the house (see first picture). I am an Engineer so I just built one from a Raspberry Pi (see second pitcure), but I think if you integrated this capability into your WiFi kit it might be worth the price.

4.0 out of 5 stars Works GREAT (5 stars)...but its surely NOT a 2 hour job to install! (2 stars) ... Plan for 2 full days!

October 22, 2017

Style: ES-3100Size: 3068 CFM

The fan itself works VERY well...WE LOVE IT! ...but there are definitely things that could be improved in the execution here! First of all- this is no "2 hour install" for MOST consumers. I am a highly experienced DIY person and hold a BS in Mechanical Engineering, too....and it took me over 2 full and difficult days to complete this installation properly.. Its a hard and difficult install in many and perhaps most situations. By the time you pull control switch wires through walls, source your power, mount switch boxes, wire the switches and the fan, clear insulation, locate a suitable location and cut holes in ceiling, clean up the big mess you'll make with dust, etc., connect ductwork hoses and secure them with inadequate screws in the most awkward of areas while balancing on your knees on 2x4s, and attempt to hang a heavy fan that has not one eyelet or handle to hold it with...and all in a hot'll see what I mean. But wait- there's MORE: A) the electrical junction box is FAR too small. In this tiny box -suitable for perhaps 1 standard wall plug- you are expected to join 3 ea incoming Romex 12-2 cables with the numerous wires coming out of the fan. It CAN be done...but barely....and with danger of possible shorts or wire damage. Why not supply a larger termination box? B) The mounting straps are thin, short, and pretty much a joke. PLUS- they are the ONLY appendage available for holding this awkward and heavy thing up and in place so you can fasten the straps to the beams...and you can't do both at once unless you are an OCTOPUS...SO- FORGET about a 1 person installation unless you add additional temporary straps and rigging points like I had to do. Even then, it was no fun. C) Additional, unexplained hardware came with the fan- a couple of white clips with thumbscrews....not seen in any video related to installing this fan. Nothing like having extra "what's this for?" stuff to unsettle you! D) NO INSTRUCTIONS come with the fan...and the on-line version is simplistic, sing-song, and misses many points.E) No pre-drill or even proper self-drilling screws supplied to fasten the duct flange to the intake plenum assy. Instead, you are expected to use "sharp" screws. Try doing THAT while balancing on your knees on top of 2x4s....unless, of course, you are an OCTOPUS. How hard would it be to pre-drill a pilot hole to make this I had to do? Much to-do is made of "we invented this!". Fact is, this concept has been used for decades by many plant engineers (including me) and other users... nothing new here at all. Its a basic induced draft fan. Surely, a shrewd designer will emerge soon with an improved competing product for half the price. On the POSITIVE side, the QuietCool customer service people are pleasant to work with. Again- I am VERY HAPPY with this that its installed!!

5.0 out of 5 stars FANTASTIC Cooling Solution!!

April 25, 2016

Style: ES-4700Size: 4505 CFM

I was able to install this fan over a weekend (mornings while the attic was cool); about 8 hours total which included running power and control wiring. I am very impressed with the build quality...nothing about it seems cheap/cheesy. The wiring for the multi-speed unit is a bit more involved, but I just followed the directions and double checked my work. For the most part it's a 1 person job, but it was helpful to have someone down below to help lift the unit up into the attic...the duct work is pre-attached, so you need to take it slow to not damage it. The most difficult part was not having all the space as depicted in their instructional videos ;-).
The design is really starts up with zero vibration and at full power runs very quietly compared to the traditional attic fan..about the same noise level as a box fan. Its extremely quiet at the low speed, no problems running it overnight while sleeping. When powered down there's just a gentle tap sound as the baffles close.
I really like that the whole unit is insulated so I don't need to "winterize" it.

5.0 out of 5 stars I am an idiot for waiting so long to buy one

June 26, 2017

This was a snap to install with the exception of power. For that, I had to call in an electrician with a 2 hr minimum. But my portion (everything else) was literally 2 hours including putting the optional WiFi controllers on the motor heads. With the straps, vibration is minimized so you just get the sucking sound from the vent. With an iPhone app I got about 50db when about 3-4 feet away from the vent. It is certainly no louder than the AC intake vents.

I have a 6000 square foot house and this single unit moves the blinds even when I have exterior patio doors open. It is moving a lot of air. Like just about everyone else that got one, I can't believe I waited so long to get on the bandwagon.

5.0 out of 5 stars Nice fan

February 17, 2019

Style: ES-3100Size: 3068 CFM

This unit works as describe. Installation is simple if you have attic space. I unfortunately was stuck doing this in a tiny attic and it was rough getting it to fit. I ended up with a 3100 but I think the calculator calls for 4700 based on size. I also got lazy and plug this directly into my WiFi outlet, therefore I only have the high speed output. Now I wish I can change to low speed without redoing the electrical. Anyway you can feel a bunch of air rush in when the fan is on from the bedroom on the same floor, I can even get a little air movement from downstairs when this is running too. I will run more test when I get into the summer season, now my outside temperature is lower than the house. As far as noise, this fan is noisy a little noisy at high speed. I can definitely hear it downstairs. I wonder if it will be better at low speed. As far as power usage, this runs 10% of the power as my air conditioning. Sure this is expensive, but it should pay itself off in 10 years.

We had our first "warm" day here in the Bay area. The fan did itself, it pulls all the "stuffy" air out of the house within 10 minutes of running it. The air that comes in from cool night time is so refreshing and honestly it is as good as air conditioning.

5.0 out of 5 stars Five Stars

May 14, 2018

Style: ES-4700Size: 4505 CFM

Amazing product.

5.0 out of 5 stars Love this fan! Quiet and easy to install!

September 28, 2018

Style: ES-4700Size: 4505 CFMVerified Purchase

I installed this fan with the timmer and high/low switch. The install was easy except for crawling in the attic. On high I can still hear my TV really well and get air to move across the house. It creates really nice Negative pressure. its considerable less energy than my AC and gets the house and attic cool in no time. I would suggest doing any wiring that you can ahead of time and before you hang the unit.

5.0 out of 5 stars This QuietCool whole house fan is great, for a 2

October 21, 2015

Style: ES-4700Size: 4505 CFM

This QuietCool whole house fan is great, for a 2,000 sq foot home this is the perfect size. Over 4,400 CFM On high (the sound of air rushing through your home up the fan) is loud, you can have a conversation but you will hear it in the background. You can drop your temperature in a two story house by 3 degrees in 30mins on high or 5-6 degrees in an hour. Well worth the noise, quieter than your A/C when that kicks on high. On low this is quieter than a floor/ ceiling fan, you can hardly notice it. I keep it on high for 1 hour then low for 30mins to pull any residual warm air out of closets in San Jose, CA. The more windows you open the more air flow into the house. When you open a window on bottom floor in opposite corners and stand near the doorway you can really feel the flow of cooler air from outside coming in. I had this professionally installed by a licensed handyman who put it in just over 2 hours with timer (I went with Enerlites HET06 5-10-30-60 mins, 2-4 hrs Preset In-Wall Countdown Timer) and high low switch (Master Flow Model # BWS2 2 Speed Fan Control Switch)

I use this early morning or late evening when temperature outside has dropped and get the temperature down to 75 before closing up windows the following day. The ES line has a brushless motor so should last longer than the standard brush motors. Construction is very good and backed by a 10 year warranty which provides piece of mind. I purchased mine directly from quietcool and they delivered it within two days (no damage) vs freight shipping where it could get damaged.

5.0 out of 5 stars Two year energy savings update!

August 28, 2014

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Best investment I have made in my home yet. Compared to other fans it's quiet, very quiet. Not silent but quiet. Electricity bill are down about 30-35% over the past 3 months and home is cool to cold at night.

*Update - I have now had this installed for two full summers and I've saved over $2000 in cooling costs. If you look at it as an investment the price is well worth it. I enjoy my home and the idea of having the sound of a helicopter landing on my roof was not interesting. This is really quiet compared to a friend who has a "normal" fan. When he came to our home and heard ours he came up with the helicopter reference.

-I'm still saving 30-35% on electricity.
-Compared to 2013, over the 14 and 15 summers I've saved $2276.00
-Heating bill have not changed so it's not leaking heat in the winter .

5.0 out of 5 stars I turn the fan on to expel all the hot air from the attic and then use the AC to cool the bedroom upstairs

June 21, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

2017: Update: I had this fan for 2 years now and had no problems. In California, it cools down at night most of the summer, so I now do not need to turn on the AC most of the summer at night, I just use the fan. During hot months, July and August, I turn the fan on to expel all the hot air from the attic and then use the AC to cool the bedroom upstairs. Without this fan, it was almost impossible to cool the bedrooms upstairs with the AC due to the hot air lingering in the attic. I estimate it has cut my AC bill by 40%. It has paid for itself several times over.

2015: Bought from Amazon prime and was delivered in 2 days. Replaced a whole house ceiling mounted 4500 CFM fan which I bought at the local hardware store which was was extremely noisy. This new fan is easy to install providing you have good access to your attic. It is heavy and bulky so you need to get it to the attic somehow. Once in the attic is very easy to install and the electrical wiring is very standard.

The fan works as advertised and it is EXTREMELY quiet. What a difference. We can now watch TV without being disturbed by the fan noise. It cools 3 rooms in the upstairs of my house in less than 30 minutes and pushes all the hot air out of our attic.

Just make sure you get the correct fan size (CFM) and you will be satisfied.

David R. Voth

5.0 out of 5 starsA financial no-brainer where I live due to high energy costs, reliably cool nights

September 3, 2018

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Climate and Economic Considerations

I live in San Diego, California within eyesight of the Pacific Ocean. The night air here is a comfortable temperature even on the hottest days, only rarely staying muggy through the night. Our electric power costs are outrageous: I pay 27 cents per KWh for the first 334 KWh, then the costs jumps to 48 cents. Beyond 1,080 KWh in a given billing cycle, the rate increases to 55 cents.

My electric bill for 7/1- 8/8 this year showed 610 KWh of usage with a cost of $233.86, by far the highest I have had to pay since I had 2.5 KW worth of rooftop solar panels installed in 2010. At 2:00 AM the day after I received that bill, it was 84 degrees in most of my house while two small window A/C units were struggling to keep sleeping areas tolerable. Outside, it was about 75 degrees. At that moment I decided to take a serious look at whole-house fans. I did the math, and in under an hour I determined that the QuietCool CL-3100 was the right size for my house and would probably pay for itself in two years or less! My sleep-deprived, heat-addled brain was stunned by this revelation at 3:00 AM. I finally got some sleep, and by 8:00 AM I ordered the system after drinking my daily coffee and reviewing the numbers.

This type of system definitely makes sense in coastal Southern California. It might not be as good a fit for a climate that has hot, humid nights and less expensive power. As an example I looked at Houston, TX and was shocked to see that people typically pay between about 7 and 12 cents per KWh. I've spent enough time there to know that the summer night air is often uncomfortably hot. I do not believe that a whole-house fan would be as beneficial there as it is in San Diego, though it might be useful during spring and fall months.


This fan system is well-made, easy for a handy person (like me) to install, and moves a lot of air. Rated at 320 watts (on the high speed setting) it uses a fraction of the power of two small window air conditioners I have been using for several years, which are rated at 520 watts each. I haven't done the permanent wiring yet, but the mechanical installation took me just four hours without assistance from cracking open the manual to having a running fan system in my attic. I expect to spend a total of about 3-4 hours installing the proper wiring, including drywall repair and paint. I plan to tap into an existing circuit as the power source.

I considered knocking off one-half star for the manufacturer not including some items that are essential for a proper installation of this system, specifically a single-pole, double-throw switch, a countdown timer, a length of armored cable, and a second metal handy box and cable clamps that a typical installation will require. OTOH one size would not fit all situations. Some might prefer to install the fan on a 20-amp circuit, so the switch rating, cable gauge and length, etc. are not predictable. Therefore this fan gets the full five stars.


My wiring project took longer than expected because I had to get into a difficult area of my attic and drill a hole in a top plate, but it came out fine and I didn't burn down my house or get electrocuted.

Factors to consider - Think carefully and do the math!

Anyone who is contemplating this type of fan should carefully consider the applicability of a whole-house fan to your specific situation:

- Is the night air after a hot day sufficiently cool to make you comfortable if you pull it into your living space?

- How much per month are you spending on air conditioning?

- How many nights per year would a whole-house fan work as well as or better than your A/C, and what is the expected cost savings of running the fan instead of A/C?

- Does your attic have sufficient out-flow ventilation such as gable vents, turrets, etc.? If not, you should take into consideration the cost of upgrading your ventilation. A whole-house fan cannot operate efficiently without adequate attic ventilation. The information for determining this is available on QuietCool's Web site.

- How big is your house (square feet of living space?) This is important in deciding which model of fan to buy.

- Are you capable of doing the mechanical installation yourself, or with a helpful friend, or will you need to hire someone? The fan with including ducting is rather heavy and unwieldy. Lifting it into the attic was the only part of my installation where an assistant would have been very helpful. (I'm 60 years old and have to admit that this installation would have been a lot easier 20 years ago.)

- Are you proficient at electrical wiring? If not, prepare to enlist the services of a kind friend or a professional. (I happen to be very comfortable with it, and have re-wired most of my house.)

In summary, buying and installing a QuietCool fan was such an obviously beneficial decision given my locale and the construction of my house. My only regret is not having done it several years ago. It works exactly as advertised, and is much quieter than some less expensive systems I have seen in other peoples' homes. The noise level is quite tolerable for me on the high speed setting. I am looking forward to finishing the wiring, and trying the low speed and automatic shutoff.

Read the manual and do your homework before you buy!

***** Technical Note added after completing the wiring *****

The video on wiring a 2-speed fan with an electronic timer has a couple of continuity problems (ha ha.) It does not explicitly say to, nor does it show, including the white wire or the green wire from the timer when connecting the whites (neutrals) and green/bare wires (grounds.) Anyone who has ever wired anything SHOULD know to do that, and if you don't you probably shouldn't take on this wiring project. If you follow the video exactly, you will end up with a stray white wire and a stray green wire. That's bad. The DIAGRAM in the manual is correct.

5.0 out of 5 stars Love it! Cool house, pennies on the AC dollar!

July 25, 2016

Verified Purchase

Wow, what a difference a whole-house fan makes! Struggling to find anything negative or "needs improvement."

Things to note:
1) This fan is BIG! It comes in a big box, it is heavy, and it moves >4,000 CFM on the high setting. This didn't affect my star-rating, I just felt it was good to note.
2) Installation is straightforward and easy; use professionals. If you just plug the fan into a switch controlled plug, you'll only be getting high-speed all the time. Get a professional electrician and have it installed right.
3) On high speed, you can definitely hear the fan and the "hum" it makes throughout the house structure. On low, I cannot even tell its on.
4) Before buying, I read a review where someone complained about the sound of the closing dampener when the fan turns off ...barely noticeable.
5) Think through exactly how you want to control this fan. I happened to purchase the two-speed switch as well as a WeMo Light Switch (rather than a timer switch) and am very happy with the ability to set auto-off and other triggers via IFTTT.
6) Position the fan somewhere central and only open windows in rooms you want to be cooled down.

We've used the fan a few nights now and I'll come back and update this as we get more use out of it.

5.0 out of 5 stars Makes house very comfortable

January 2, 2019

Size: 4,505 CFMStyle: CL-4700Verified Purchase

Put this in to hopefully lower A/C costs a bit in central Florida. There are times, even in summer season, when the outside air temperature is low enough in the evening for the wife and I IF the air in the house is moving. This fan should do the job. The first night of operation, on low speed, we had to pull up covers. The next morning the interior of the house was 3 degrees cooler than outdoors. First time that has happened without the A/C on, or when we actually heater on. A major plus is this thing is very, very quiet. Another big plus is it really knocked the temperature of the attic down in about 20 minutes. From 115 degrees to 90.
I installed totally by myself in about 10 hours total, which included building a more solid support framing for the perimeter of the damper box. That total time includes breaks from the 110 to 130 degree attic heat and eating. Moving in my tight, low roof attic is always a challenge for my 6 foot 5 inch, 200 pound old body and the approximate 45 pound fan head added to the "fun". Definitely detach the flex duct, and install the wiring (if you desire 2 speed operation) before you try to hang the fan head. I definitely recommend this fan.

5.0 out of 5 stars Excellent home upgrade! Worth the price.

March 18, 2016

Verified Purchase

I have a two story 5000 sq. ft. house. Installed this double fan on the second story landing. very professional equipment. Excellent instructions with a template. took two people about 1.5 hours to install and wire power. opened first story windows around the house and turned on the fan. very quiet considering it's CFM rating. within a few minutes the whole house was cool and refreshed. This will be a morning routine for us. Strongly recommend this product. After demonstrating it to other people, they are ordering fans for their house now. Guess i will be spending my weekends helping them install the fans.

5.0 out of 5 stars Great fan for attic or whole house

August 9, 2018

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Very satisfied with the fan thus far. It is very quiet and moves a lot of air. You will want multiple windows open or it creates more breeze than needed for comfort from one window.
My Electrician was kind enough to do the install and with an assistant took only about 3 hours. But came with great instructions and a video so definitely can be done by DIY, but would advise an assistant if putting in an attic.
I had him hook up a high low off toggle switch in series with a smart switch I can operate from my phone.
Our bedroom is on first floor of two story home so I can control the fan from my bed with the smart phone and put on timer for two hours or whatever is desired.

5.0 out of 5 stars This truly is the BEST Whole House Fan design out there. Easy Install and as QUIET as promised!!

November 8, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

This is the most awesome whole house fan I've ever owned. Very easy to install. I had to add some timbers up in the attic to hang it from due to house design, but that was simple enough. If it weren't for that, it probably wouldn't have taken me 2 hours to install. Full disclosure on that though, my house was built pre framed and wired for a conventional whole house fan so I didn't have to do any electrical work other than wire it up. I would say plan for 4 to 6 hours if you have to pull wiring and make suspension frame mods like I did.

It is as quiet as everyone says. This is in the main hallway literally just outside of my bedroom door. I can have this thing on high and not tell it is even on in my bedroom. Standing directly beneath it, you can hear it, but only just. On low, forget about it. You'd have to look up to see the louvres open or stand in front of a window to feel the air being drawn in.

And even on low, this thing moves a lot of air!! I loved it this fall, going to sleep and feeling the cool evening/night air washing over me. It still amazes me when I feel how much air is being drawn in through the window, and you don't hear a thing.

I've lived in this house for 13 years and never installed a WWF because the noise my past ones made. So loud, and so annoying. Yes, it gets to where you don't even hear it, but if you're watching TV or the radio, you have to turn them up so loud it gets crazy. I started doing some research and found this, thought it was worth the money if it is as quiet as people said because I'd actually use it instead of leave it off.

Yes, I could probably buy 2.5 - 3 other fans for what I spent on this one, but sine it is as quiet as it is, I WILL actually use it, so to me it is worth every penny. Why spend even less money on something that you can't stand to even turn on due to the irritating noise?!!

5.0 out of 5 stars Great Whole-House Fan

November 9, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Excellent whole-house fan. It's not cheap but it is high quality, and made in the U.S. It's not silent but much quieter than the traditional whole-house fans. I live in San Diego, about 6 miles inland, and it can get hot some days. In the evening it cools down but the wind also dies. This fan will quickly cool the house on those still cool evenings. I have good attic insulation and the house stays comfortably cool during the day even when in the 90s by running the fan early morning to cool house and attic then close all the doors and windows as it warms up outside.

Fairly easy installation although it does require some strength as it is fairly heavy and awkward for one person to handle. Best if you have assistance. For power and control I installed two receptacles in the attic and purchased two wireless switched receptacles. I can use the smart phone app to turn on high or low speed (just don't turn on both at the same time!). The app also has capability to set schedules or use a timer function. I also control with voice via Alexa.

-This thing moves a lot of air and it has to have somewhere to go. Make sure you have sufficient attic venting.
-You will get the most benefit by having good attic insulation.
-If you have recessed ceiling lights that are not sealed well (or other gaps to the attic) it can push air from the attic into your house.
-I purchased the size recommended for my house (the 3100 for a 1300 sq. ft. house) and it does work great by adjusting the windows to let the air in the rooms which are occupied. With a lot of the windows open wide it does pull the air through but you don't feel the "breeze". If I were to purchase again I would go to the next size up. I may install a second, smaller unit to boost airflow when I want to open all the windows.
-These fans are much cheaper to operate than an AC unit.
-Effectiveness is diminished when weather conditions are such that it does not cool down at night.

4.0 out of 5 stars

June 6, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

When I first plugged the fan in to test it (in my garage, luckily) I was greeted by a horrible clanging sound. It turns out that the fan blade was knocking against the housing. I wasn't ready to send this huge box back to the manufacturer just yet, so I removed the grill and bent the motor more towards the center. That seems to have fixed the issue for now, but I'm a bit wary that the fan might work its way back and start banging again.

I'm otherwise very happy with the fan and it cools my house off nicely, but I think QuietCool needs to work on their quality control more.

5.0 out of 5 stars Love this fan

September 21, 2016

Verified Purchase

Wow. I love this fan. Perfect for my 2,100 sf home. It was some hard and hot work getting it up into my attic space, but well worth it. Wired it for two speeds. Ordered the switch and timer shown in the manual, both from Amazon. Wiring was pretty easy. Had to remove the side flanges to make it fit between 2 joists, 15" apart, but no big deal. Surprisingly quiet. Really moves the air through the house.

5.0 out of 5 stars Staying Cool

January 17, 2019

Size: 5,462 CFMStyle: CL-5400Verified Purchase

Wonderful product. I was apprehensive at first because of the price, but very happy with my decision to buy it. It’s great on those days where it’s not hot enough for A/C and also if you want cycle fresh air through the house. Creates a nice breeze through the house when you just crack a few windows. It’s just a little louder than most bathroom fans, but nothing like the noise level of the cheap whole house fans you get at the big hardware stores. One of my concerns was sizing the appropriate unit for the size of my house. I purchased the 5400 model because it’s rated for up to 2700 sqft and my house is around 2500 sqft. It seems ideal in providing the perfect amount of air flow, especially on high.
Install was fairly easy. Hardest part was getting the bulky fan into the attic, but my access is through a closet. It maybe easier for those that have a larger opening to the attic. Plus it would be easier if you had two people. Wiring was basic. If you can wire a normal wall outlet you can wire this. Now I only wired it to the power source I didn’t not use the wall switch and timer. I used the WiFi adapter, which works great and a breeze to connect.
I have already recommended this product to several friends and family members and most importantly the wife very happy with it.

4.0 out of 5 stars Good fan, a few installation tips

May 15, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

4 stars because the packaging allowed for some denting to the damper box and ceiling grill. Had to work out the dents. I installed over the weekend, took about 5 hours with a lunch break. The fan works great, pulls a lot of air and the motor is not very loud in my attic. You can hear that it is on but not such that it is disturbing to us. I look forward to using this on the hot days, cool evenings here in Northern California to cool the house down. A few install tips:
- I think wiring up the motor housing before taking to the attic is a no brainer. Instructions suggest this but I cannot think why you would not do this. Instructions do not mention need for a cable clamp for the box on the motor housing after you remove the prewired cord, so you should have one available for the 14-3 romex, I believe 3/4" works.
- Once the fan, duct and damper box are in the attic, you need to attach ceiling grill to damper box. I thought instructions were weak on this install. Here is what I did: down below, before taking damper box to attic, lay the ceiling grill on top of damper box, align how it will be on the ceiling and pre-drill holes for the 6 white ceiling grill screws. Also start each screw to make it easier later. Now take the damper box to the attic and position over hole. I then used two stretch cords with hooks from the two ceiling joists on either side of the damper box to firmly press the damper box to the ceiling. Then, back below I screwed the ceiling grill into the damper box with 6 white screws and everything is nice and tight with no extra screws into drywall or screwing into a joist.

5.0 out of 5 stars Impressed: super quiet, lots of air, absolute beast

July 31, 2015

Verified Purchase

Aside from the manufacturer's packaging I'm a big fan of this fan. I wanted a fan that could move a lot of air but also not sound like a helicopter landed on our roof (old house fan style). This beast does just that. When on low (one fan on low, one fan off) I can barely hear it feet away. In my bedroom with the door open and just 8 feet away its completely silent. With one fan on high I can still sleep without noticing it. Both fans on high its noticeable but really not that bad still. The speed at which it cools down my 2,600sqft house is not quite as fast as I had hoped but it still drops the temp by 3-4 degrees every hour until I reach the outside temp, typically in just 2-3 hours max. It is quite an installation and you need to be somewhat handy to do yourself. The wiring and setup in particular is quite the chore. High Recommend!

5.0 out of 5 stars In the evening when it begins to cool down, we crack open the windows and crank ...

June 27, 2018

Size: 6924 CFMStyle: CL-7000Verified Purchase

We live in a 2300 sq. foot 2 story home and the QuietCool Classic fan is a wonder. In the evening when it begins to cool down, we crack open the windows and crank up the fan and the house is instantly filled with the most pleasant breeze. Then, as the temperature gradually drops throughout the night, the temperature of the house does as well. The beauty is the next morning we close the house back up and turn on the AC. On several mornings, it's been so cool in the house the AC doesn't turn on until noon or later. The ceiling grill is attractive and the noise is not much louder than the hum of an AC air handler. This has been a fantastic purchase.

2 people found this helpful

5.0 out of 5 stars We did much research before purchasing the Quiet Cool. Install was fairly easy

July 19, 2018

Size: 4,505 CFMStyle: CL-4700Verified Purchase

We did much research before purchasing the Quiet Cool. Install was fairly easy, you do need two sets of hands. We hard wired it in and use a AIR VENT wall switch with a fan wall timer switch. I can tell you when there's low humidity outside you literally don't need your a/c on with these fans running. Do the calculations for roof ventilation and add some if you need to or you'll have a mess in your attic from moisture. We had enough traditional ventilation, but we still added a Power Vent just in case. It is as names, very quiet for the amount of air it moves. My dehumidifiers (new) are louder. This model moves air in a split level 2400 sq ft home beautifully.

4.0 out of 5 starsI really like the auto closes damper when the fan turn off ...

July 13, 2018

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Reall we’ll though out kit. I really like the auto closes damper when the fan turn off to prevent air leakage. Fairly quiet operation. Moves a lot of air. Installion was easy assuming your 16” or 24” ceiling joists are centered in the place you want it. All parts are included. The kit does seem a bit pricy for all that it comes with, but in the long run, fairly cheap for years of comfort.

5.0 out of 5 stars A great energy saver!

September 27, 2016

Size: 3,009 CFMStyle: CL-3100Verified Purchase

We've installed this fan in two houses in the California Central Valley. It's extremely quiet and cools the house quickly. As a result, it postpones our air conditioner until much later in the day, with it usually not coming on until 4 or 5 pm. My guess is that the fan probably saves about 40-50% on our utility bill. Unlike other fans we have owned, this one is barely audible when running. I recommend installing with a programmable switch so that it comes on automatically at certain times of day (late evening to push cool air into attic, and very early morning to pre-cool the house prior to outside temperatures rising). Make sure the fan is sized appropriately for the size of your house; newer houses are much more tightly built and require slightly smaller fans.

5.0 out of 5 stars Totally love these things.

March 2, 2017

Verified Purchase

I installed one of these a few years ago for some friends. They make this VERY easy to install if you have an outlet in your attic. The name says it all - quiet cool. I wanted one for some time and this year we finally pulled the trigger to replace our old very loud attic fan for this gem. I'm not making any friends with the UPS guy ordering this, but at least he's earning his keep. Yes these are expensive, but they are worth it.

5.0 out of 5 stars Quiet Cool says it all

May 16, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

I ordered the 3100 along with the high low and timer switch. The entire system seems to be well constructed and was easy to install, THe included strapping around the fan itself made it is hang and the vent box went in smoothly with an easy cut in the 2 floor hallway ceiling. The fan can be heard when on high, but not enough to disturb sleep or any other activities. I was amazed at how quickly it started to pull in the outside air on all floors. I connected the fan using the high low and timer switch. however if I had to do it over I would just install this on the timer and use the factory setting high speed. So far a very great project.

5.0 out of 5 stars Finally fixed my summer problem

July 28, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Living in Los Angeles all my life has been noted by hotter and hotter summers every year. I own a 1920's craftsman home with thin plaster walls and original windows which heat up the house by 10am. Fellow neighbors have since broke down and got central AC for there housing but I wasn't ready to pay the extra watts they were having to. What would get to me is when the sun would start to set you would have a cool breezy temperature outside but the house would stay 1pm hot on the inside. I got the package with all materials safe and complete and had it installed in about 3 hours (hot attic in summer no fun) in the hallway of the house. Once turned on and let run for about 20min the difference is not to be understated. The house matched temperature with the outside and in fact the air quality inside the house got cleaner due to the constant circulation. By 7pm my wife was complaining bout being cold in which the same time last year she was cooking on the sofa. Product works as intended and I have zero complaints only notes are there will always be an amount of noise when it comes to house fans and if running at 1pm in the middle of summer the best it will do is match temperature but if you are like me then thats a better option than the house being 96 degrees than outsides 86 degrees.

5.0 out of 5 stars Worth Every Cent!!

September 8, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Installation was a breeze (pun intended). Took about an hour. I highly recommend the Wi-Fi Controller- (1) it eliminates the need to hard wire the fan controller in the wall, and (2) I can control the fan from my smartphone!

One thing I'd recommend, you should pay attention to the sizing recommendation. My home is a little larger than this fan is spec'd for.. the 5400 or 6400 would have been a better fit, but this model will suffice.

This fan is very, very quiet! It exceeded my expectations.

Great products!!

5.0 out of 5 stars so this helps to pull in fresh morning air to cool down the attic

July 16, 2018

Size: 1,464 CFMStyle: CL-1500Verified Purchase

Makes such a difference in my home. Get up around 3-4 in a.m. and crack a few windows...flip this on and the house temp goes down. I live in the Central Valley of CA were it is over 100* from mid-June to Sept. so this helps to pull in fresh morning air to cool down the attic. Runs so quiet I have to stand in the hall to hear it. Glad I made the total investment of $700...

5.0 out of 5 stars Just like the name: It's quiet and cool.

May 2, 2015

Verified Purchase

If you don't know about the virtues of whole-house fans yet, then you are paying too much for air conditioning! If your house starts out cool in the morning but heats up in the afternoon and by night time it feels like you are in an oven, even though the temperature outside is cool, then you need a whole house fan. It replaces the air in your house and attic with outside air, which is perfect for cooling the house down at night, which means you will start out the next morning with a cooler house as well. You need to have windows open to run this fan, and adequate ventilation in your attic, or it will cause problems.

I'm really impressed by how truly quiet this QuietCool fan is! It's very powerful and you can feel the air pressure change when you turn it on, and I can feel the air moving through the house, but the sound is minimal. We've turned it on when guests are over and with the fan running 5 feet away, they haven't noticed that it's on. Our quiet Panasonic bathroom fan is louder.

Installation is clearly explained in the excellent instructions. It's not a quick and easy job, but not that hard to DIY either. You do need to install a box for the switch, and I recommend putting it on a timer so you don't run the fan for too long.

We don't have air conditioning, so this fan has made hot summer evenings much more enjoyable for us!

4.0 out of 5 stars Can cool the house down fast.

July 19, 2018

Size: 4,505 CFMStyle: CL-4700Verified Purchase

I have been using this for a couple of months and it cools the house much faster than the AC when it's cool outside in the evening. Sometime 5 degrees in 15 minutes. Our AC would take a couple of hours to cool the house the same amount. This unit may be quieter than other fans but it is definitely not "quiet".

5.0 out of 5 stars Easy to install

March 29, 2019

Size: 2,280 CFMStyle: CL-2250Verified Purchase

Very well designed product in that the fan and associated ducting is designed to fit through the hole cut in the ceiling—very convenient option for getting the equipment up into the attic. Also, it has a regular power cord to plug into a standard electrical outlet; hard wiring is not required. Good, clear instructions along with reasoning behind certain steps are well explained. Well within skill range of an average DIY’er to install.

5.0 out of 5 stars Works great - recommend a smart wifi plug to turn on/off remotely

October 3, 2018

Size: 5,665 CFMStyle: CL-6000Verified Purchase

Easy to install. Hardest part is running an outlet in the attic for it. I used a smart wifi outlet adapter so I can turn on/off the fan with my phone. Works great. Our house is 2 story 2300sqft. Running this fan for 20 minutes clears out all the hot air in the house.

5.0 out of 5 stars Best attic fan ever.

April 14, 2018

Size: 2,280 CFMStyle: CL-2250Verified Purchase

Best attic fan ever! We have a relatively small ranch home. With our old attic fan we could barley hold a conversation and definitely couldn't watch TV while it was on. Plus it would hardly pull air into the house. With the Quietcool fan is quite the opposite. Even with it on high and standing directly under the vent you can hardly hear it. Stand in front of a window and you can definitely feel it. Terrific product and relatively easy to install with a little bit of handyman skills.

5.0 out of 5 stars Marvelous invention!

September 18, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Keeps the whole house cool. I live in a hot climate without A/C. As soon as the outdoors begins to cool down, the fan pulls out the hot air and pulls in cool air. The process takes about 5 minutes.

5.0 out of 5 stars The whole house fan we replaced sounded like a helicopter landing on the roof

April 19, 2017

Size: 3,009 CFMStyle: CL-3100Verified Purchase

The whole house fan we replaced sounded like a helicopter landing on the roof. You have to listen vary carefully to even know this thing is running, even on high speed, but it brings in outside air as good as any I've ever seen. We just bought a new home which didn't come with a whole house fan, so I bought another one and will be getting it installed next week. That's the ultimate endorsement of a product. They named it right - Quiet and Cool.

5.0 out of 5 stars We are extremely happy with this product

February 16, 2015

Size: 1,464 CFMStyle: CL-1500Verified Purchase

In my opinion and experience this fan is quiet compared to other whole house fans and helped us reduce cooling cost. We are extremely happy with this product.

7 people found this helpful

5.0 out of 5 stars QuietCool house fan for 3000 sq ft

July 6, 2014

Verified Purchase

We just had this house fan installed 1 week ago. We are loving it!! We compared the Airscape house fan to this one. The similar model cost over $600 more. We chose the QuietCool for $1019.
We have a 3000 sq ft single story home. We have bedrooms on each end of the house. The air flow is great!! Only need to crack windows, opening too many doors/windows reduces the force of the air flow.
In our previous home, we had a house fan that sounded like a jet engine. It was amazing air flow that you would blow papers off the table or anywhere. This fan is strong but without the noise. It definitely is a transition. The air must be cooler outside. We have found the right combo of windows open to pull in the most air. So happy with the purchase.

22 people found this helpful

4.0 out of 5 stars Great unit though

November 11, 2017

Size: 4,505 CFMStyle: CL-4700Verified Purchase

As a builder I must say that this is a quality unit. If the flange on the ceiling grate had been wider as to cover the screw heads, I would have given this 5 stars. I now have to paint the entire ceiling in the hallway. Great unit though. Will buy again

5.0 out of 5 stars Love it!

December 2, 2014

Size: 3,009 CFMStyle: CL-3100Verified Purchase

I loved it. It was powerful and the sound is quite of like as if you turn on the air conditioner. Installation could be challenging if your attic is small like mine - I had an electrician to install for me as I also installed a timer to be more efficient with the energy. Overall I am very happy with this fan.

5.0 out of 5 stars very happy with the results

August 9, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

The fan works as expected, very happy with the results! We live in Seattle which in the summer (Jul-Sep) has 80-90 degree days and cool 60 degree nights with little humidity. We have a 1200 sq ft 1 story Craftsman house built in early 1900's with 5 windows that open. During a hot day the house normally heats up to 80 degrees and by morning will be in the mid to high 70s without the fan and windows only cracked open for security. The QC3100 fan will keep the inside of the house within about 3 degrees of the outside air and both high and low speeds generate a steady breeze through all 5 windows, within about 15 minutes the fan brings the inside temp to within 3 degrees of the outside air but since all the furniture, walls, floors and etc are still warm it can take many hours to permanently bring the temp down so you do have to run it for longer periods of time. After a hot 90 degree day in the evening (8pm or so) we turn the fan on for about 2 hours and it drops the temp to about 75 degrees as the outside air typically does not cool off enough before we retire for the night. In the morning we turn it on for about 2 more hours and the temp drops into the 60s! In addition to cooling the house the fan generates a steady and strong breeze through all windows. Normally a breeze (without the fan), only comes in through one side of the house and is sporadic dependent on nature, with the fan imagine a steady 2-3 mph breeze coming in through every window. The QC3100 is probably overkill for our 1200 sq ft house so anyone with a similar sized house could probably go with the QC2250 and someone with a slightly larger house would probably be happy with the QC3100. One note, we put the QC3100 ceiling hole in our hallway in the center of our house near our master bedroom, while the fan is quiet I would not recommend putting it in a bedroom or close to a bedroom as it is a bit too loud, especially on high mode, for sleeping.

My husband, who is an experienced DIY guy (but not a professional), did the installation including cutting the hole in the ceiling and in the wall for the switch and wiring up the fan, all told it took about 6 hours to install, definitely not possible in two hours as the instructions indicate unless perhaps you have done it before and all goes as planned. Note we opted not to buy the timer switch, we bought the High/Low wall switch only so that we would have the option to adjust the speeds but thought that the timer was overkill. We live in the city so security is a concern, we figured that we had to shut the windows before retiring for the night anyway so did not need the timer. I noticed that one reviewer mentioned a possible issue getting the fan/ducting through the access hole. My husband says that all parts fit through the ducting hole required to be cut through the ceiling. If your joists are 16" on center (standard even back in 1913), then the unit will fit through the new hole cut for the air handler that goes into the ceiling. The hole needs to be about 14.5" for the fan, duct and air handler to fit through, the ducting comes unscrewed from the air handler and the fan so that you can fit all through. Note the air handler comes with some tabs that can be screwed into the ceiling joists if you want to install it above the joists, these tabs can be removed if you want the air handler to be flush with the sheetrock/lath and plaster ceiling which seems to provide a better seal than mounting above the joists.

Once the whole house fan was installed we noticed that our existing attic vents were not sufficient to vent the air to the exterior, the air would come back down into the house via the ceiling lights and other fixtures. While this was a great way to figure out where our ceiling was leaking air it was not a good situation to have hot/smelly attic air venting into the house. The manufacturer indicates that you need 4 sq ft of attic vents, our old home had about 2 sq ft, so we knew we would have to modify the roof ventilation. We opted to install an Air Vent 1600 CFM gable fan (rated for 4 sq ft of free air flow) with 16 X 16" louvers purchased from home depot. My husband wired the gable fan directly to the whole house fans "high" setting. My husband cut a 16 X 16 hole at the gable and wired the fan to the same black "high" wire coming from the high/low wall switch. We don't really use the low setting anyway but it can be turned on but the gable vent will not be on an some hot air could leak into the house.

If you go with the whole house fan/gable attic vent make sure the electrical circuit you use can handle it. The standard 15V home circuit can handle 1100 watts (80% capacity) so can easily handle the whole house fan and gable vent combo which is about 500W. Consult with an electrician if you are in doubt. They can wire it up for another $500 if you are at all in doubt.

5.0 out of 5 stars Very quiet fan - but doesn't come with the electrical wiring.

July 4, 2017

Verified Purchase

This fan is really nice, very quiet - much more quiet than my last one. The only issue I had was the instructions don't state you need to wire it yourself and that the wire doesn't come with it. I'd think for over $1,000 it would include all the necessary wiring to complete the job. I called the support and they said the plug that comes with it is only for 'testing' it. - Lame sauce!! Anyway the product is terrific.


Amazon Customer

5.0 out of 5 stars Quiet and Cool

May 29, 2018

Size: 4,505 CFMStyle: CL-4700Verified Purchase

I rarely post a product review but I am so impressed with the Quiet Cool that I had to post a review. No doubt it is quiet compared to a typical whole house fan. The amount of air it moves is also very impressive. We can have 4 or 5 windows open and still get the breeze effect. We live in CO so the nights are cool and perfect for a whole house fan. Installation was easy if you consider yourself a true DIYer. Watch the videos and follow the manual and you'll be alright.

5.0 out of 5 stars This Thing Sucks

January 21, 2015

Verified Purchase

Great alternative to the typical whole house fan. Quite and powerful... What else do you need.

5.0 out of 5 stars work's great

September 19, 2018

Size: 2,280 CFMStyle: CL-2250Verified Purchase

now that how a whole house fan should be quiet and cools the house fast works great would recommend to anyone it sure beats the old whole house fans of past.

5.0 out of 5 stars We love it

November 11, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

We live in Florida and the concept of a whole house fan is a foreign one. During the season, the evenings are cool and we love to open the bedroom windows and let the fan cool the house. It definitely saves since we don't have to run the A/C. This model is also every quiet even on high. It's expensive and doesn't pull as much air as an open fan but the quiet is well worth it.

One person found this helpful

5.0 out of 5 stars Love it.

May 23, 2016

Size: 3,009 CFMStyle: CL-3100Verified Purchase

I love my new fans. I installed this fan and a 2500 in my house. I have a 3000 sq ft house with 9 - 10 ft ceilings. These 2 together move a great amount of air and a not much louder than my AC unit.

5.0 out of 5 stars

October 12, 2018

Size: 1,464 CFMStyle: CL-1500Verified Purchase

works great, I should have bought the larger size, best to over kill..the exhaust suction will be better

5.0 out of 5 stars highly recommended

July 31, 2014

Verified Purchase

My 3rd quiet cool fan in my house. This one is powerful! A bit pricy, but a quality piece that will pay for itself. Easy to install, even though I did not have much space in my attic.

5.0 out of 5 stars Worth it, ever bit.

July 31, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Easy installation. 1,860 square foot home. We know which windows to open or close to get that breeze over the bed at night. Sleep great in the heart now. San Diego Coastal Area in a 2 sorry home. Probably should have gone one size higher, but this does work life a champ, and quiter than the room fan.

5.0 out of 5 stars Love This Thing

April 22, 2017

Verified Purchase

Brings the cool evening air from outside rushing in from open windows. If you can swing the cost have an HVAC contractor install it to make sure it's in the right spot and outputting the most it can.

If you're going to do it yourself, it's not TOO difficult and QuietCool has knowledgeable people that are easy to get on the phone.


Amazon Customer

5.0 out of 5 stars Absolutely fantastic! About as quiet as my AC when it's ...

August 20, 2016

Size: 1,464 CFMStyle: CL-1500Verified Purchase

Absolutely fantastic! About as quiet as my AC when it's running. Rated a little small for my place but works great. I wasn't looking for an onstant shot of air, just a cool breeze and this was an excellent choice

5.0 out of 5 stars Best Investment

November 24, 2016

Verified Purchase

Moved my blinds all the way up and shuts doors because it is so powerful of a fan. I run it a few hours and it cools my house down dramatically. It cut my ac bill by 75%. I would recommend this to all

5.0 out of 5 stars Quiet!

August 28, 2018

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Works great and very quiet. The box fans we've been using are louder.

5.0 out of 5 stars Great way to cool off house

September 20, 2018

Size: 2,280 CFMStyle: CL-2250Verified Purchase

Should have bought years ago! Cools off house quickly at night, quiet, energy efficient and fairly easily install


Amazon Customer

5.0 out of 5 stars Well built

March 19, 2018

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Installed it myself, took me most of a Saturday, product is well built, arrived in good condition, no damage. I bought the 3100 model for a 1600 sq ft house. With 3 widows opened several inches, we get a stiff breeze though each one. I will have to update this when it gets warmer. I think i got the right size.

5.0 out of 5 stars GREAT PRODUCT! Really cools down house. Installation is easy. MUCH BETTER THAN TRADITIONAL LOUD HOUSE FAN!

August 24, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

This fan is GREAT! On average now, my AC starts at about 3 - 4 pm everyday, instead of 11 - 11:45 am, prior to installation. (In Sacramento area, 94 - 104 degrees over the past couple months, huge savings on electric usage) I have a big house, approx. 3800 sq ft. I was afraid that this fan would be too small for me, but I was WRONG! We usually head upstairs around 9pm at night and get kids ready for bed. At that time we turn the fan on, you immediately feel a nice light breeze traveling through the upstairs (downstairs is closed up at this time). When we turn the fan on, our bedrooms are about 77 degrees. After about 30 minutes or so, the temp has fallen to about 72 degrees. When we let it run all night, I wake up to a 66 degree bedroom, quite chilly! We let it run until about noon (we work from home, sliding glass door is open now, as well as a few windows) and then close all windows. The A/C doesn't kick on until about 3:30 or 4pm. By the way, the FAN is REALLY quiet compared to other house fans I have been around. It is right outside the kids bedroom and it doesn't bother them at all. I installed the fan myself with another friend. It wasn't difficult at all to install, just a little tricky getting the unit in the attic, into the right spot, because I have very limited room to maneuver. If you are looking for a whole house fan, the QuietCool brand is well worth the extra cost. Remember, you will usually run the fan when it's cooler outside than it is inside, that's usually late evening and early mornings. What's the point of having it, if you can't run it, because it's too noisy and will wake your sleeping kids? This thing could run for several hours and not bother anyone.

5.0 out of 5 stars Excellent, better than the big box store fan.

August 7, 2014

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Very Good. I replaced a noisy whole house fan with the Quiet Cool model. The noise of the Quite Cool fan is significantly less than that of the other fan. The volume of the Quiet Cool fan is about the same as the central AC unit. Installation was fairly straight forward, not difficult. All parts and hardware were included, except the wall switch(s). It comes wired with a plug in cord, 110V plug. Because I had a previous fan already wired in, adding a 110V outlet in the attic was easy enough, to operate the Quiet Cool fan on the high speed without availably of the low speed. Very happy with this QC unit.

5.0 out of 5 stars keeping us cool

August 16, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Arrived in a timely manner as promised. Packaging great - no damage to item. Installed and working great within the day. Best investment to help cool off the house at night!

5.0 out of 5 stars We love our QuietCool Whole House Fan

November 24, 2014

Size: 3,009 CFMStyle: CL-3100Verified Purchase

We love our QuietCool Whole House Fan! Our electrician recommended this brand based on the noise level of some other fans that he had installed in the past (including one at his own house that he said sounded like airplane taking off). We purchased a 1/2/4/8 hour timer along with a extra hi/low switch and our electrician took care of the rest. We have had warm days but it quickly cools in the evening lately here in So Cal, so it really works well for us this time of the year and the AC unit has had quite a good rest lately!

You do need to pay attention to the venting in the attic area per the instructions as you do not want all of that hot air forced back down from the attic into the house if it has nowhere else to go, especially when this baby is on high speed. We put in a solar fan to complement the existing vents that we had in the attic and there really is a noticeable difference in how hot our house gets now during the day and how quickly we can cool it back down in the evenings with this new fan. Added bonus: it quickly gets rid of some of those foul odors that a house tends to get from time to time when cooking fish, etc.

5.0 out of 5 stars Great

August 6, 2018

Size: 5,462 CFMStyle: CL-5400Verified Purchase

Works so good keeps the house cool love it


5.0 out of 5 stars Amazing! I've actually got a breeze coming in my ...

August 25, 2015

Size: 3,009 CFMStyle: CL-3100Verified Purchase

Fan installed today. Amazing! I've actually got a breeze coming in my window, on the second floor of the house, first time ever. I didn't believe it would really pull the air in but it works.

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