• Berner International

• AAON

• AC&C Painting and Plastering, Inc.

• APV Americas

• Air Cleaning Technologies

• Air Economy Corp.

• Air Enterprises

• Airxchange

• American ALDES Ventilation Corp.

• Aquatherm

• Aztec Sensible Cooling

• Barber Nichols

• Bard Manufacturing Company

• Beaird Industries

• Boulder Associates, PC

• Brechbill & Helman Construction Company, Inc.

• Broan-NuTone Canada

• Broan-NuTone, LLC.

• Bry-Air, Inc.

• Buckley Associates

• Calmac Mfg. Corp.

• Carnes Company

• Clean Burn

• Cooper Carry, Inc.

• Delval Equipment Corporation

• Des Champs Laboratories Incorporated

• Doucette Industries

• Elliott Co.

• Geoflex Systems

• Global Industrial

• Governair Corp.

• Grand Entrance Gates, Ltd.

• Greenheck

• Hastings HVAC, Inc.

• Heat Transfer Systems, Inc.

• Howden Buffalo

• Hy-Save Energy Conservation Technologies

• Jonathan Nehmer + Associates, Inc.

• Kathabar

• Kemco Systems

• King Co.

• King Industries, Inc.

• Kooltronic

• L.J. Wing

• L.J. Wing Company

• Lennox Industries Ltd.

• Lockwood Products

• Marvair

• McQuay International

• Mueller: Paul Mueller Co.

• Niagara Blower Co.

• NuTone

• Olsen Technology Inc.

• Powrmatic of Canada Ltd.

• Process Equipment Co.

• Raydot

• Raypak

• Seasons 4 Condominium Rentals

• Semco Incorporated

• Steril-Aire

• Superior Boiler Works

• Tamarack Technologies

• Techmaster Inc.

• Trane Company

• Trevor-Martin Corp

• United Air Specialists, Inc.

• Venmar CES Inc.

• Vinyl Solutions Inc.

• WaterFurnace International, Inc.

• Waterfurnace