QUALITY.
SINCE 1948.

Before ordering replacement parts, make sure you have the fan model and serial number.

This is rarely a problem with a motor. Typically, the issue is with excessive intake restriction or excessive exhaust restriction. Read more about excessive intake or excessive exhaust restrictions.

Effective whole house fan insulated covers are available on the market. However, we do not manufacture nor provide insulated covers.

We recommend the belt drive Comfort Cooler (CC) whole-house fan because they are quieter. Comfort Aide attic fans are less expensive and smaller, but louder. When making the decision remember this is an appliance you will use for many years.

No, our blades are designed specifically for the horsepower of the motor provided. To change horsepower you will need to change the blade, pulleys, motor and belt. You will also need to recalculate your exhaust area.

You need 1.5 times the blade diameter between the blade and any obstruction. For example, a 30″ diameter blade will require 45.”

The regular shutter will be better for airflow, however, this is not practical for some installations. Check the building codes in your area (some do not allow the joist to be cut).

Comfort Cooler (CC) series whole-house fans may be mounted vertically, however, the AS and CSS shutters will not function properly in the vertical position. We do not carry a ceiling shutter for vertical installation. Vertical installation instructions.

Yes, but only if the thermostat has a simple on/off operation. Please note: if the thermostat varies the amount of voltage delivered, it will damage the motor and void the warranty.

No, the standard motors provided in whole house fans are not suitable for speed control. This will damage the motor and void the warranty.