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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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Orlando Bound: AHR Expo 2020


We’ll see you at the world’s largest HVACR Marketplace

Come visit the Triangle Engineering exhibit at the upcoming AHR Expo, the World’s Largest HVACR Marketplace, on February 3-5, 2020 in Orlando, Florida. Our booth will be in the West Hall, Booth #6385. We will be exhibiting our 84” Gentle Breeze portable fan, HHC hooded fan and JBX jet upblast fan, and our unique FHIR true reversible exhaust or supply fan. 


  • Two-speed single-phase motors available in 1/3HP and 1/2HP (115v only)
  • Blade diameters from 24″ to 60″
  • ODP and TE motors (1/3HP to 5HP)
  • Rolled inlet venturi for improved airflow
  • Rugged heavy-gauge galvanized housing and polyester powder coat finish  for corrosion resistance

This year’s featured product The VIK Series Belt Drive Heavy Duty Industrial Exhaust Fan Package. VIK Series Belt Drive Heavy Duty Industrial Exhaust Fan Packages come standard with shutters and OSHA-compliant guards included and are designed to meet the exhaust needs of a wide variety of commercial and industrial applications like greenhouses, factories, warehouses, gymnasiums, and arenas. All VIK models up to 1 1/2HP come equipped with Triangle Engineering’s “X-Wing” Belt Tensioner which reduces maintenance and extends belt and motor life.