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Additional Resources

Downloads, FAQs, and more.

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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Shutters and Dampers

QUALITYProducts.
SINCE 1948.

Heatbuster
Heatbuster

The HeatBuster is one of the most rugged and dependably built, full service…

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Hazardous Location Models , Portable Fans , HeatBusters
Series 3500 Dampers Learn more
Series 3200 Dampers Learn more
Series 3100 Dampers Learn more
Series 3000 Dampers Learn more
IWS Exhaust Shutters
  • Extruded Aluminum Blades
  • Powder Coated, Welded Galvanized Steel Frame
  • Bronze Pivot Bushings
Learn more
RIWS Supply Shutters
  • Extruded Aluminum Blades
  • Powder Coated, Welded Galvanized Steel Frame
  • Bronze Pivot Bushings
Learn more
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