CVT Green Cooling Fan

California Title 20 and 24 tested and approved (HVI-916)

Two Sizes to conveniently fit in the existing HVAC return.

20″x30″ Or 20″x36″

Paired with the CVT Filtered Free Cooling or (Coming Soon) CVT CentraFlow – filtered fresh air systems (no need to open doors or windows, keeping your home secure).
(This system can also be installed as a stand alone whole house fan, by finding a convenient spot in the ceiling, and not attaching to the HVAC system)

20″ ecm 3400 cfm fan motor flush mount


24″ ecm 5200 cfm fan motor ducted

Easy install duct backplate

2 – Stability brackets

Spring return actuated damper –

When CVT GCF is Off, the damper closes and seals off the Fan to the attic, while keeping the HVAC return duct open.

When CVT GCF is On, the damper closes off the HVAC return duct, while keeping the Fan to the attic open.
(This keeps attic air and debris from entering the home unlike most whole house fans.)

CVT Control Board

CVT Wi-Fi App (turns on from anywhere)


Due to its low wattage use, it can run on a small generator

Extremely efficient