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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.

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Problem: squealing, slapping or whining noises while operating
Problem: squealing, slapping or whining noises while operating

SINCE 1948.

Possible causes: loose or worn belts, defective motor bearings and/or defective fan bearings

Possible causes: loose belts, pulley or fan blade, defective motor or no power. Corrective actions: Tighten the belts and clean guards.

Possible causes: faulty switch, defective motor, no power. Corrective actions: replace the switch, replace the motor, check to see if power cord is plugged in.

If this is a three-phase motor, simply reverse two of the three phases to reverse the motor direction. If this is a single-phase motor, see the wiring diagram on the side of the motor for reversing instructions. If this is a replacement motor on a barrel fan, check the fan label to ensure it is a Triangle Engineering fan. Many times our motors run in the opposite direction from other manufacturers.

Check for adequate voltage at the motor. Check if the blade and motor can turn freely.

Generally, this happens when the motor reaches the end of its life. It also can be low voltage supplied to the fan. Check to ensure there is voltage at the motor. Check if the blade and motor turn freely.

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.

Check to see if the blade and motor shaft turn freely. Check for adequate intake area and exhaust area. If these checks do not stop the humming, the motor most likely needs to be replaced.

A fan will rotate in the wrong direction when a Triangle Engineering motor has been installed in a fan from another manufacturer. Our motors only work on fans manufactured by Triangle Engineering. Look for the nameplate to identify the correct manufacturer.