Belt Drive Vs Direct Drive Attic Fan

Belt drive fans are quieter than direct but still noisy.

Belt drive vs direct drive attic fan.

You have a fan a motor and maybe a coupling. Generally speaking the more blades a fan has the quieter it will be. It offers an efficient way to reduce cooling costs while keeping your whole house more comfortable. The cool attic 24 in.

Also make sure your unit has a welded frame so it will not loosen up and begin to squeak. Lesser flexibility compared to belt driven fans. It features a powder coated finish for weather resistance. Additionally they re easier to clean.

Ventamatic whole house fan 24in 3092 cfm belt drive model cx24bd2spd 9. Belt drive whole house fans that use an integrated pulley provide for a smoother and quieter operation than direct drive fans. Direct drive units are also louder than their. 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.

Also may be more expensive when similar direct drive and belt driven fans are compared side by side. Unlike the belt driven fans in case of a direct drive fan there is lesser energy loss. 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.

Direct drive fans require fewer parts and thus usually less maintenance. 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. There s also no belt residue and these fans cost less to maintain generally speaking because belts don t wear down and break.

I think that the belt drive blades can turn slower with a deeper pitch than a direct drive. 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. That would be quiet but would look like a mess from outdoors. This is because of the fact that the amount of friction is greatly reduced in case of this fan when the fan is operating.

I had a belt drive with a two speed motor years ago. That pulls more air with less fan noise.