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Additional Resources

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Frequently Asked Questions View all FAQs
How do you order the correct replacement parts?

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

Where can I find instructions to wire a motor on my fan?

The nameplate of the motor includes a wiring diagram. Wiring diagrams can also be found beneath the motor image in our Buy Parts section. Simply click the wiring diagram icon to view it.

Can I install a thermostat?

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.

Can I install my whole house fan vertically?

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.

Quality Products

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Windband Stack Caps

SINCE 1948.

Windband Stack Caps


  • Standard sizes: 24" to 60" ID (consult factory for custom sizes)
  • Wind Band – gray polyester powder coated steel with two formed reinforcing ribs supported by steel brackets. It affords protection from weather and cross winds.
  • Throat - galvanized steel inner throat is welded to angle ring.
  • Damper Lids - open automatically when fan is turned on, close automatically when fan stops.
  • Positive Bumper Stops - adjustable neoprene tipped bumper stops assure immediate closing when fan is cut off yet permit maximum air flow when open.
  • Damper Bearings - shutter lids turn on sintered bronze-oil bushings mounted on rust-proof rods for lifetime of resistance-free operation. Mounted outside of air-stream.
  • Neoprene Bumper - mounted around top of throat. It assures positive damper contact. Prevents freezing in cold weather. Dampens sound when closing.