AirScape 3.5e WHF

AirScape 3.5e WHF

  • 24 inch Industrial Grade Fan

  • Impressive cooling capacity  - 3500 max all the way down to 800 min CFM

  • 385W @ speed #7, a remarkable 20 watts on speed #1; power and efficiency = savings!

  • Whisper quiet - dBA ranges from 39 - 51 min-max speed @ 1m

  • California Title 24 compliant

  • Web server allows control from browsers, tablets, or smart phones

  • XR units offer additional door insulation

2nd Gen Controls, DMP info, SafeSpeed info (click images for more info):

2nd Generation Controls - Hardwired, Wireless & Web Ready SmartSpeed DPS Pressure Controls DMP Data Monitoring Package

model description usually ships price QTY
3.5e WHF AirScape Whole House Fan 3.5e, featuring 24 in. industrial grade fan with super efficient ECM motor. 3500 to 800 CFM range. INCLUDES fan and motor, damper box, 7 ft. ductwork, 10 foot power cords, mounting hardware, tape, 20 ft. of chain, white cube core grille, and hardwired wall switch with CAT-5 cable. Features include: Web Control Ready, Quick Connections (RJ-45), Timer, 7 speeds (800CFM to 3500CFM). 1 Day. In Stock $1539.00
3.5e WHF-XR AirScape Whole House Fan 3.5e, featuring 24 in. industrial grade fan with super efficient ECM motor. 3500 to 800 CFM range. INCLUDES fan and motor, damper box, 7 ft. ductwork, 10 foot power cords, mounting hardware, tape, 20 ft. of chain, white cube core grille, and hardwired wall switch with CAT-5 cable. Features include: Web Control Ready, Quick Connections (RJ-45), Timer, 7 speeds, R-49 Insulation. 1 Day. In Stock $1589.00
U-RC-KIT-V1 Wireless Remote Kit Includes remote transmitter (TT-TRANS-V1) and wireless receiver (RC-REC-V1). For use with AirScape Whole House Fans only. NOT compatible with "Kohilo" model fans. Full speed range and timer function. Battery operated. *PRICE ONLY VALID WHEN PURCHASED WITH WHF UNIT. 1 Day. In Stock $49.00
U-DMP Indoor/outdoor temperature sensor and historical data logging package for the 2nd Generation Controls. Includes OUTDOOR and INDOOR TEMPERATURE SENSORS, 50 ft cable and access to view historical temperature data for your whole house fan. *PRICE ONLY VALID WHEN PURCHASED WITH WHF UNIT. 1 Day. In Stock $49.00
U-SafeSpeed Kit SafeSpeed (TM) system kit for AirScape whole house fans. Includes DPS-SENSE sensor, pressure tubing (25 and 5 feet) and interlock wiring. *PRICE ONLY VALID WHEN PURCHASED WITH WHF UNIT. 1 Day. In Stock $59.00
TT-TRANS-V1 Additional Wireless Transmitter for use with either the 2nd Generation Controls Package or the RCR-KIT-V1. REMOTE ONLY (no receiver). Multi or high/low speed and timer function. Battery operated (included). 1 Day. In Stock $25.00
TW-TRANS-V1 Additional wireless WALL MOUNTED transmitter for use with either the 2nd Generation Controls Package or the RCR-KIT-V1. REMOTE ONLY (no receiver). Multi or high/low speed and timer function. Battery operated (included). Low voltage mounting bracket included. **RF signal may be affected by household electrical wiring and other electronics in some installations** 1 Day. In Stock $25.00
RG-2622U Openable and washable grille for use with 4.4e, 3.5e and Kohilo Whole House Fans. 26.5 x 22.5 inch rough opening. PRICING IS ONLY VALID with an AirScape Whole House Fan purchase. To be used with 24" O/C joists - special construction necessary when installing with 16 O/C joists. Upgrade from standard grille - standard grille is not included when this is purchased. 1 Day. In Stock $29.00
ACP-02 Acoustic Plenum Box for use with 3.5eWHF and 4.4eWHF units. The kit includes: insulated raised frame, tape, and installation hardware. The ACP-02 adds 12 inches of height to the total height of the Whole House Fan installation. Ships unassembled. 1 Day. In Stock $149.00
LFIC LFIC (loose fill insulation cover) consists of 90 sqft of breathable synthetic fabric. The fabric is meant to be placed on top of insulation such as cellulose that could be disrupted by a whole house fan. 1 Day. In Stock $14.50
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Airflow: 800/1300/1600/2050/2500/2900/3500 CFM min - max (7 speed settings)
For Square footage: up to 4,000 (under ideal conditions) see sizing calculator
Fans: 24 inch industrial grade fan
Energy Use: 20/40/70/90/180/240/385 Watts min - max (7 speed settings)
Efficiency: 40/ 9.1 CFM/Watt min/max
Acoustical: 39 - 51 dBA @1m min - max
Attic Seal: Air Tight with Industrial Grade Dampers
Insulation: Automatic Insulated R-10 Dampers, or R-49 VIP on XR model
Controls: Hardwired switch with timer, Optional Wireless Remote, web-ready
Grille: High-Flow, White Aluminum cube-core
Grille Outer Dimensions: 24.5 inch X 28.5 inch
Installation: Compatible on 16 or 24 inch O/C joists
Rough Opening: 22.5 inch X 26. 5 inch
Required Attic Venting: 7 sq.ft. net free area
Unit Size: 25.75 in X 31 in X 14.25 in (Damper Unit)
Shipping Weight: 115 lbs (total- 3 boxes)
Electrical: 120 VAC, 60hz, 3.5 Amps
Warranty: 3 Years
Outstanding Energy Efficiency: Industry Leading ECM Motor supplies the greenest CFM on either speed to reduce energy consumption and maintain optimal comfort.
Precision Fans: 24 inch robust and powerful fan delivers 3.491 CFM efficiently and quietly
Multiple Speed Operation: 7 speed operation provides high power for quick cooling & low steady flow for whisper-quiet overnight performance.
Sound Reduction Technology: Sound-wave attenuation technology isolates the 24 inch fan in a noise-deadening ducted design that baffles air and motor noise
Automatic Insulating Doors: Powered by twin heavy-duty actuators which are tested to 45,000 cycles, the all-metal damper doors are insulated to R-10 or R-40. Altogether this guarantees an airtight seal between the attic and living space.
Premium Cube Core Grille: High-flow grille designed to minimize air movement noise
Engineered Quality for Maintenance Free Operation: Designed and engineered for years of dependable service. Built in North America using all-metal construction, industrial grade components, and solid state electronics
Quick and Simple Installation: Compact footprint to mount on standard joists, either on 16 or 24-inch on-center using pre-drilled tabs. Designed to fit through its own mounting hole. Equipped with a standard plug, wireless remote ready
Warranty and Technical Support: Guaranteed for 3 years and backed by our professional technical support team. Prompt, knowledgeable responses from real engineers are an e-mail or phone call away

Related Products

Pollen Screen

Pollstop fabric is a finely woven synthetic mesh capable of stopping 90% of pollen from entering your home. The fabric replaces standard window screen material.

AirScape 4.4e WHF

Yes. You can have it all. The 4.4e WHF moves A LOT of air to quickly and quietly cool your home. This unit is ultra-quiet and offers amazing energy efficiency at low speed.

Bath Ventilation Medium

At 210 CFM, we take ventilation to the next level. The VK-210 and CVK-210 bath ventilation kits will still be very quiet.

Bath Ventilation Large

These AirScape bath ventilation kits are capable of ventilating a large bathroom, or since 2 grilles are included, you can do 2 bathrooms with a single fan. Very quiet, effective, and surprisingly affordable.

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.”