Kohilo-Large
What is it ?
- It's an AirScape Whole House Fan without the motorized damper & electronics
What are the features ?
- 2800+ CFM on High Speed
- 2 Speed Operation (switch and terminal box included)
- Extremely Quiet Operation

| Airflow: | 2850 High Speed / 2501 Low Speed |
|---|---|
| For Square Footage: | up to 3500 (under ideal conditions) see our sizing calculator |
| Fan: | 22" diameter powered by 2 speed motor |
| Energy Use: | 297/263 watts (High/Low) |
| Efficiency: | 9.6 CFM/Watt |
| Acoustical: | 47.5/44.5 dBA@1m (High/Low) |
| Attic Seal: | Non-Powered Backdraft Damper |
| Insulation: | NA |
| Controls: | Dual SPST Decora Switch: |
| Grille: | High-Flow, White Aluminum Cube-Core |
| Grille Outer Dimensions: | 24.5 inch X 28.5 inch |
| Rough Opening: | 22.5 inch X 26. 5 inch |
| Required Attic Venting: | 6 sqft net free area |
| Electrical: | 120 VAC, 60hz, 3 Amps |
| Warranty: | 3 Years |
Related Products
Kohilo-Small
Very quiet and efficient. Similar to its AirScape cousins, but without a motorized damper.
AirScape 2.5 WHF
The 2.5 WHF is the first of our ducted models offering motorized doors, low sound levels and an attractive watts per CFM figure.
AirScape 2.5e WHF
The e-series features cutting edge ECM motor technology, offering a whole new level of quiet, efficient performance. The 2.5e WHF delivers 2536 CFM on high speed and consumes only 44 watts on low speed.
Your Comments
“Design of the product for sealing and the ease of installation is outstanding. The whole house cooling works fantastic and most peope don't realize the benefits of cooling your house off before going to bed at night in the heat of summer. Great product.”
“It worked perfectly. Our house get cool quickly and it really makes a huge difference.”
“This fan has been an excellent addition to our household. We like how quiet it is. It is great for cooling the house, and for eliminating odors when needed. ”
“Your product has really made summer in the Northwest more enjoyable! We don't have enough hot days to justify A/C, but regular fans just don't cut it when temperatures go up and the winds die down. Thank you!!!”
“Living in the Seattle area, our house is without traditional A/C. During the heat wave during the summer of-2009 we quickly ordered on. It was delivered within 2 days and installed in 4 hours. The unit dropped our house 12 degrees every night. Our house thermomemter registered the interior temp at 90 at the its hottest and the fan dropped the temp to 76. The fana ability to run at quietly is a big plus as it is installed in our hallway near bedrooms.”
“Bought 1.0 fan system for my non air conditioned garage, that has a 7ft garage door and a 14ft ceiling. In the summer the heat would be traped in the garage, very hot. Since I installed your 1.0 fan, it's much more pleasant to work in. Excellant product, thank you. Randy Jones”
“What I love about the AirScape Fan is it is not loud, but very efficient for ventillation. My house is not designed for forced air conditioning,(all air returns are on the lower level) and it would have cost me 5 times to install it even if the house could accomodate it. With the AirScape Fan, I my house can 'breathe' in the summertime, and it stays much cooler, plus, if I burn a cake, it can suck out the burn smell in no time! :)”
“The fan made such an amazing difference. We live in a relatively moderate climate and are using the fan year around. In the summer we run it at night to cool off the house and in the winter we run it during the day to heat up the house. It has made a HUGE difference in the comfort of the house. Not to mention the drop in utility bills. Our only regret is that we waited so long to purchase.”
“Only thing I can think of is that I only found out about this product from my brother in law and then I looked into it and bought one. Then a friend of mine in San Diego complained about his house not having insulation or air conditioning and so I told him about the AirScape. He and I both had not heard of it except through word of mouth. And just about everyone I tell about my whole house fan thinks I mean an attic fan. So it seems there is overall ignorance about your product. We love it and r ... ”
“Works great, evacuates the hot air traped throughout the day wihin 30 to45 min and drops the oveall temperatures with little use of electricity. Thanks!!”
“We're very impressed with the difference the fan has made. It's very well-built and quiet. Superior design and construction of the AirScape unit / kit was the deciding factor. ”
“I would like to see a quick release ceiling grill so it can be easily removed for cleaning. Similar grills are used for central air vents and can be removed without tools in seconds to be hosed off. The Airscape grill gets dirty quickly and must be vacuumed and/or brushed to clean. Removing the current grill is too inconvenient for routine cleaning. For security, I am not comfortable leaving windows open as we sleep. I would like to see you provide links to "intake vent" or window products that ... ”
“My experience with Airscape has been outstanding in everyway!!! I called tech support about an alternative mounting question, and he was very helpful in all aspects mounting and use of your product. Cudos for such a great company and product! Will buy again should the need arise. The fan was run about 12 hrs a day from late spring to early fall. We live in CA's central valley, temps sometimes to 115. Our highest PG&E bill was $83. Love your product! I have recommended it many times!!!”
“No suggestions...just keep doing what you are doing. Great high quality product. It was expensive, but that cost will be forgotten over the years as it quietly keeps us cool.”
“Purchased the AirScape after extensive internet searches and reviews to install in our laundry/utility room where we also have a 2nd refrig/freezer. Needed to remove heat build up in warm months and to help cool house. Just installed it today (Mar.11). VERY quiet at both low and high speeds. Remote works very well. ”
“Have enjoyed the product. Was easy to install and has worked as advertised. Installation video on you tube was very helpful (although I think you should have your own video on your site that is easily downloadable for people that purchase your product). I've pointed out the fan to almost everyone who comes to my house. Can't wait for Spring to get here, so I can fire it up again. Love sleeping with windows open and fresh cool air coming into the home.”
“I am very impressed with this fan. It cools our house effectively and was easy to install. It runs very quietly.”
“We love how quiet the fan is, the electric consumption rate, and how quickly it cools the house. I have recommended to everyone I know, and posted info / web on my facebook page at the time of install. ”
“All in all everypart of my experience with Air- Scape is wonderful price,installation,quality,the quiet operation even at night if I have run it when it was warm lately it has been very rainy and cold cannot wait till it gets warm again so I really try it longer the price I gave in the previous question was just a guess because I did not run it long before the cold rainy season came in but it was the best decision both my wife and I made on getting something that cools I can sit on the sofa in t ... ”
“Although the house we bought the fan for is 2900sf and the fan is not rated for that many sf, I assumed that as I live in a temperate climate, it would be enough and it is.”
“We use the 1.0 to ventelate the garage, thereby reducing the attic temp. I am interested in what you are planning for capturing pollen. We live in a new subdivision and dust is a problem with outside air ventelation.”
“
WE LIVE IN SOUTH FLORIDA AND HAVE VIRTUALLY
ELIMINATED USE OF THE AC FOR THE MONTHS OF
NOVEMBER, DECEMBER
JANUARY AND FEBRUARY. WE ANTICIPATE USING IT
EXTENSIVELY IN MARCH AND PARTS OF APRIL AND
MAY. WE ENJOY THE FRESH AIR IN
THE LIVING ROOMS ESPECIALLY IN THE MORNINGS
AND EVENINGS. IT PROVIDES A
GREAT SLEEPING ENVIRONMENT, DRAWING COOL AIR
THROUGH THE BEDROOM.
-David
Miami, FL
”
“
The performance has been exceptional. We are able to pull air into whatever
room we desire and get a nice flow. I have shown it to many other
homeowners
in our area as this is rather unusual for this part of the country
(Virginia), everyone
has commented on the low noise and unobtrusive installation (not noticed
until pointed out).
Edward
CA
”
“
...the units pay for themselves in about a year or two based
on how much less we are running the AC. We used to run
AC all night, now we run it from 3pm on hottest days til the
temp outside goes below 68 or so. The units also precool
the house each day so that the house starts off at 62 to 64
rather than 70 where the AC would normally take it by AM,
so this gives us the hours til 2 or 3 pm to accumulate heat
before we need the AC again. I am glad we put them in.
-Ron
CA
”
“
We us this extensively last summer and have been
very pleased with its performance. It creates a comfortable breeze that can
be felt in a number of places in our home and exchanges the warm
inside air with cooler outside air in a matter of 10 to 15 minutes.
Prior to the AirScape the house retained the heat of the day well into
the night and early morning. We sleep much more comfortably now and
I m looking forward to this coming summer so we can use it once again.
So far the Airscape has been pe ... ”
“
BY COOLING THE HOME THE EVENING BEFORE, EVEN
IN 100 DEGREE DAYS, THE HOME NEVER GOT ABOVE
80! THATS NO BS! [The AirScape is] HALF THE SIZE OF
SYSTEMS THAT DO HALF THE JOB!
Frank
Zurich, IL
”
“
I am very impressed with the performance of my Airscape
whole house fan; my A/C usage last summer was reduced
to a bare minimum during some particularly hot afternoons.
The unit runs very quietly and although installed in the
walk-in closet of our master bedroom it manages to cool
the whole house with strategically opened windows. I am
also able to run the fan on low through the night without it
disturbing my sleep.
Brian
San Diego, CA
”
“
I am very happy with my fan unit. I tried 2 other brands I bought at
Lowes & Home Depot first. Very loud. Put yours in & it was much
quieter.
Pulls plenty of air. Our house is a 2 story 2700 sq ft new construction
home. The unit is used all day until [seasonal] temps reach high 80s. At
that time it is used in the evening only. Saves a lot on A/C bills.
G K, Colorado
”
“I want you to know this is the best investment I ve made in my house. I
live in Arkansas and wasn t sure if this system would be effective for
my climate. It is now June and I have yet to turn on my AC. Wow am I
impressed. My heat and air guy was amazed at how quickly it cooled the
house when he was testing the system. He is totally on board and
recommending the product.
Thanks,
Carrie in Arkansas
”
“I LOVE this fan. I recommend it to everyone. A
handful have purchased. 3 summers with the WHF in So Cal and its paid for
itself twice over in A/C savings. Love, love love it. -Derik”



