The CentricAir 4.0 whole house fan delivers a powerful (3945 HVI-916 CFM) and requires about 5.5 square feet of attic ventilation.
The R-5 gravity damper is designed to seal off the attic from the living space whenever the system is not in use.
QUIET MODERN ENGINEERING ADVANCES – CentricAir whole house fans are ultra-quiet. The fan motors used in CentricAir systems consist of a German engineered, acoustically designed, precision balanced, 5-blade system, made of composite materials and wing tip design for a remarkably quiet operation (see video). Also included is acoustical ductwork which further contributes to the whisper quiet operation.
