AirScape Kohilo 2.8 and 1.5 Whole House Fans

What is it?

The Kohilo line is an AirScape Whole House Fan without the motorized damper & electronics. It does include a gravity backdraft damper for sealing.


  • 1771 CFM for the Kohilo 1.5
  • 2850 CFM for the Kohilo 2.8
  • Extremely Quiet Operation
  • Backdraft Damper for Sealing
  • Simple Plug-in for Control
  • California Title 24 compliant
model description usually ships price QTY
Kohilo-2.8 AirScape Kohilo whole house fan. 2850 CFM. INCLUDES a 22 in. industrial grade fan and motor, backdraft damper assembly, 7 ft ductwork, electrical control box with power cord, Wall switch not included (NOT COMPATIBLE WITH WIRELESS REMOTE), screws, S hooks, tape, 25 ft of chain, and white cube core grille. Sold out for the season. $749.00
RG-2622U Openable and washable grille for use with 4.4e, 4.5, 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. 1 Day. In Stock $29.00
SI Kit SI (seasonal insulation) Kit includes RG-2622 removable, washable grille. Also included is a pre-cut piece of coated insulation board. The board fits into the grille frame. MUST HAVE 24" O/C FRAMING FOR PROPER FITMENT. Price is valid only with purchase of Kohilo. 1 Day. In Stock $37.00
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Airflow: 2.8:  2850 cfm
1.5:  1771 cfm
Fan: 2.8:  22" diameter
1.5:  16" diameter
Energy Use: 2.8:  297 watts
1.5:  208 watts
Efficiency: 2.8:  9.6 CFM/Watt
1.5:  8.5 CFM/Watt 
Acoustical: 2.8:  47.5 dBA@1m
1.5:  52 dBA@1m 
Attic Seal: Non-Powered Backdraft Damper
Insulation: R4.2 insulated duct only
Controls: 2.8:  Switch
1.5:  Switch 
Grille: High-Flow, White Aluminum Cube-Core
Grille Outer Dimensions: 2.8:  24.5 inch X 28.5 inch
1.5:  24.5 inch X 24.5 inch 
Rough Opening:

2.8:  22.5 inch  X 26. 5 inch
1.5:  22.5 inch  X 22. 5 inch  

Required Attic Venting: 2.8:  6 sqft net free area
1.5:  3 sqft net free area  
Electrical: 2.8:  120 VAC, 60hz, 3 Amps
1.5:  120 VAC, 60hz, 1.5 Amps    
Warranty: 3 Years

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