• AFGO Industrial Sales

• AMTROL, Inc.

• Aitken Products

• American Energy Systems

• Bananza Air Management Systems, Inc.

• Barnes Canada

• Bingham Enterprises

• Cambridge Engineering, Inc.

• Chesmont Engineering Co Inc

• Clean Burn

• Combustion Research Corp.

• Daka Corp.

• Dakota Granite Co.

• Detroit Radiant Products Company

• Detroit Stoker Company

• Eclipse Combustion

• Fireplaces by Boley

• Hastings HVAC, Inc.

• Hauck Mfg. Co.

• Heat Transfer Systems, Inc.

• Infrared Dynamics

• Johnson: S. T. Johnson Co.

• Joseph Davis

• Juca Super Fireplace

• Kemco Systems

• Kraissl Co.

• Ludell Mfg. Co.

• Modine Manufacturing Company

• NRG Equipment Inc.

• Power Flame

• Roberts-Gordon

• Rupp Industries Inc.

• Schwank USA

• Solaronics

• Space-Ray, Inc.

• Suntec Industrises

• Thermal Systems

• Thomas & Betts Electrical

• Will-Burt Company

• William Steinen Mfg