Belt Drive Vs Direct Drive Attic Fan

Direct drive units are also louder than their.

Belt drive vs direct drive attic fan. The cool attic 24 in. That would be quiet but would look like a mess from outdoors. Belt drive whole house fans that use an integrated pulley provide for a smoother and quieter operation than direct drive fans. Unlike belt driven fans there s less energy loss because there s a reduced amount of friction as the fan operates.

Direct drive fans require fewer parts and thus usually less maintenance. Coming to the advantage of this kind of an industrial fan the biggest advantage is greater efficiency. Ventamatic whole house fan 24in 3092 cfm belt drive model cx24bd2spd 9. Belt drive 2 speed whole house fan is designed for houses with 1 800 sq.

I fantasized building a small shack outside my house and setting the attic fan in the shack and running a duct up to the attic and through the same vent as an attic fan. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. When compared to belt drive fans which require belts sheaves and bushings direct drive is just plain simpler and maintenance folks tend to lean toward direct drive for daily maintenance. There s also no belt residue and these fans cost less to maintain generally speaking because belts don t wear down and break.

However a belt drive fan has power transmission loss due to the friction between the belt and sheaves and due to the drive shaft bearings. This ventamatic whole house direct drive fan offers an efficient way to trim cooling costs while keeping your entire home more comfortable. Direct drive fans have no power transmission loss since the propeller is directly connected to the motor shaft. Cool attic belt drive whole house fan 36in 9 700 cfm model cx36bd2spd.

Belt drive fans are quieter than direct but still noisy. That pulls more air with less fan noise. You have a fan a motor and maybe a coupling. It features a powder coated finish for weather resistance.

I had a belt drive with a two speed motor years ago. This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating. Additionally they re easier to clean. Also make sure your unit has a welded frame so it will not loosen up and begin to squeak.

Generally speaking the more blades a fan has the quieter it will be. Lesser flexibility compared to belt driven fans.