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AirLoc Damper Doors Opened, Gravity Damper Doors Opened
VentCool vent cool whole house fan, whole house fans, wholehouse fan

VentCool Summit Series Whole House Fans

Summit Series Whole House Fans / Attic Fans offer free cooling by replacing hot indoor air with cool outdoor air.

Summit Series Whole House Fans are energy efficient, quietly performing residential cooling systems. Free cooling mode uses up to 90% less energy than air conditioning mode. A Summit series attic fan or whole house fan provides up to 30+ air changes per hour depending on fan selection and size of house. A precooled house greatly reduces air conditioning use during the day.

Summit series fans feature a highly efficient Electronically Commutated Motor (ECM) motors that operates at an optimally low cfm/watt draw consuming up to 90% less energy than traditional air conditioning. Summit models also feature an exclusive AirLoc Gravity Damper, a precise sealing system component designed for a secure precise seal to isolate the attic from the living space when operation for whole house fan is not desired. There are three Summit series house fans to meet any need.

Summit series whole house fans are rated and tested to Home Ventilation Institute Standard HVI-916 and can be used to comply with 2016 Title 24 Part 6. These house fans are also eligible for the Home Energy Renovation Opportunity (HERO) financing program. The HERO Program is an energy efficient financing program.

What is the difference between a whole house fan vs attic fan? Attic fans help prevent the transfer of heat from a hot attic to the living space below. An attic fan is installed in the attic and blows hot air from the attic out through a roof-level vent. Using an attic fan can reduce the temperature in the attic by up to 50 degrees and reduce the temperature by as much as 10 degrees in the living space below the attic.

A whole house fan is installed in the ceiling, usually in a central location. The fan draws in cooler evening air through open windows and pulls warm air from the home’s living space, blowing it into the attic. Whole house fans can provide 30 to 60 air changes per hour depending on the home’s floor plan, the climate, and fan size. This results in enough air to cool a home in approximately one hour. Once the sun rises and outdoor temperatures increase, the fan is shut off and the windows are closed to preserve the cooler air until the evening.

Check our Tahoe Series and Vista Series fans.

Summit series logo whole house fan, whole house fans, wholehouse fan, ventilation fans, hero program, whole house fan motors


Model Fan Airflow
CFM / Sizing 2 cfm/sqft
HVI-916 std.
Title 24
(NET) CFM / Sizing 1,5 cfm/sqft
Watts CFM per Watts Watts per CDM Sound Level (dBA) Speed Control Timer Acoustical Silencer Duct Rough Opening (Inches) Grille Dimenions (inches) Damper Blade R-Value Attic Blade R-Value Attic Venting (sq. ft.) Open Window (sq. ft.)
3,131 325 9.63 .10 59
10 spd/12hr
20” x 7ft
14.5 x 22.5
16.5 x 24.5
R-5 6.3 12.5 12.5    
4,230 3,342 292 11.45 .09 52 10 spd/12hr 20” x 7ft
22.5 x 26.5
24.5 x 28.5
R-5 6.7
6,048 5,202 850
.16 60 10 spd/12hr 20” x 7ft
22.5 x 26.5
24.5 x 28.5
R-5 10.4

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