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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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About Us

SINCE 1948.


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

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Moving Air Worldwide

Triangle Engineering was established in Houston, Texas in 1948 and relocated to Jacksonville, Arkansas in 1974. We make products that cool people, places, and products worldwide.

A fan for every need

Throughout the years, we have more than tripled our product mix. Triangle offers the widest selection of portable barrel fans in the country. Our powerful air movers include portable and ceiling mount options for the HeatBuster belt-drive fans, and Portable Cooler direct-drive fans. We manufacture industrial wall fans and shutters; agricultural fans, doors and discharge cones, JetAire high-velocity fans for factories, farms and golf courses, Master Breeze pedestal fans with a variety of mounting options; Comfort Cooler and Comfort Aide whole house fans and shutters; many wall exhaust and supply fans and shutters, including general-purpose exhaust fan package GPX; jet upblast and hooded roof mount fans, and tube and vane axial fans. We have a very wide selection of hazardous location fans in nearly every fan category.

Meet Our Team

Preston Robinson


Tanner Robinson

Vice President

James Quinn, P.E.

Director of Engineering

Rick Moon

Director of Sales and Marketing

Debbie Bennett

Customer Service Manager

Sherry Lawrence

Accounting Manager

Taylor Umfleet


Shawna Gaddy

Customer Service

David Burns


Hugh Miller