• A.C. Dellovade, Inc.

• AC&C Painting and Plastering, Inc.

• AFGO Industrial Sales

• AMTROL, Inc.

• ARGO Industries

• Aero Environmental Limited

• Armstrong Fluid Technology

• BEP Bestobell Inc.

• Berko

• Boulder Associates, PC

• Brechbill & Helman Construction Company, Inc.

• Burnham Corporation

• Bylin Engineered Systems

• Cadet Manufacturing Company

• Caloritech Inc., Canada

• Caloritech Inc., USA

• Clean Burn

• Coen Co.

• Combustion Research Corp.

• Custom Hotel Painting

• Detroit Stoker Company

• Dunham-Bush, Inc.

• Duro Dyne Canada Inc.

• Easco Boiler Corp.

• Emerson Electric Co.

• Enertran Inc.

• Gordon-Piatt Energy Group

• Hastings HVAC, Inc.

• Heat Transfer Systems, Inc.

• Heatrex Inc.

• Hogg Fuel and Supply Ltd.

• Hydrotherm Corp.

• INDEECO

• Infrared Dynamics

• Joseph Davis

• Juca Super Fireplace

• Kemco Systems

• Kraissl Co.

• Louisville Dryer Company

• McCoy Sauna & Steam

• Mervyn Salt Landscapes

• Monitor Products, Inc.

• Omega Engrg.

• Ordan Thermal Products

• Panelbloc, Inc.

• R & D Energy Savers Ltd.

• Ray Burner Company

• Sanyo Canada Inc.

• Sears Hackney Keener & Williams, Inc.

• Selkirk Canada Corporation

• Selkirk Inc.

• SmartGate

• Smith Cast Iron Boilers

• Solaronics

• Technical Heaters, Inc.

• Thermal Systems

• Thermo-Dynamics Co.

• Thomas & Betts

• Thomas & Betts Electrical

• Trevor-Martin Corp

• Vanguard Piping Systems, Inc.

• Vinyl Solutions Inc.

• Warren Pumps Inc.

• WaterFurnace International, Inc.

• Williams Furnace Co.

• Williams Furnace Company

• World Panel Products, Inc.