Belt Driven Attic Fan Rattle

Open area of a belt drive whole house fans.

Belt driven attic fan rattle.

A minimum attic exhaust opening of 1152 square inches for the 30bwhfs or 1584 inches for the 36bwhfs is required for your whole house fan. It is ul listed with thermal overload protection. In a belt driven configuration the motor exists independently of the fan blades and at least one belt sometimes more connects the motor to the fan s moving parts. Cool attic 24 in steel single belt drive whole house fan.

Attic fans in which the blades are directly connected to the motor usually cannot be repaired due to the lack of availability. Master flow 30 in steel single belt drive whole house fan. Air outlet openings from the attic are necessary for proper operation. If the problem lies with the belt drive some whole house belt driven attics fans can be adjusted or fixed.

It is suitable for a home with a 2 000 3 000 square foot attic. Quite often it works out cheaper to upgrade to a more quiet energy efficient model. The cx24bdm 2spd 24 inch cool attic belt drive whole house fan offers an energy efficient way to trim cooling costs while keeping your entire home more comfortable and is belt driven for quieter operation. See chart below net free.

Generally such fans are cheaper than direct drive fans of comparable size. 30bwhfs model needs 1152 sq. Belt driven fans offer greater flexibility in terms of rpm speed.