• A.C. Dellovade, Inc.

• AAON

• AEC

• AFGO Industrial Sales

• API Ketema

• Aero Environmental Limited

• American Geo Thermal

• Arctichill

• Aston Industries Inc.

• BERG Chilling Systems Inc.

• BEST-EX, INC.

• Baumbach Enterprises Ltd.

• Bershad Design Associates

• Bohn Refrigeration Products

• Boulder Associates, PC

• Canadian Cedar Log

• Chester-Jensen Co.

• Cla-Val Co.

• Coil Company

• Commercial Environmental Systems Group

• Compu-Aire

• Cooper Carry, Inc.

• Croll-Reynolds Co.

• Data Aire

• Davis Energy Systems

• Delta Heat Transfer

• Dunham Hardwoods

• Dunham-Bush, Inc.

• Ecco Heating Products Ltd.

• Edwards Engineering Corp.

• Elkay Mfg. Co.

• Ellis & Watts

• F H P Mfg.

• Filtrine Mfg. Co.

• Flakice Corporation

• Gasmac Inc.

• Girton Mfg. Co.

• Governair Corp.

• Halsey Taylor

• Hansen Refrigeration Service Inc.

• Heatcraft Refrigeration Products

• Heatcraft, Inc. RPD

• Howe Corporation

• J.D. Gould Company, Inc.

• Joseph Davis

• Larkin Refrigeration Products.

• Leedal, Inc.

• Lennox Industries Ltd.

• Luxbrush Painting Co. Inc.

• Mammoth, Inc.

• Marlo, Inc.

• McGervey Electric Inc.

• McQuay International

• Miller-Picking

• Mueller: Paul Mueller Co.

• Murdock, Inc.

• NYLE Dry Kiln Systems

• Olsen Technology Inc.

• Photo Lab Systems, Inc.

• Portatemp U.S.A.

• Powercold Corporation

• Powrmatic of Canada Ltd.

• Protec Cooling Towers

• Robur Corp.

• Ruthrauff Inc.

• Schuster Mechanical

• Schwank Ltd.

• Spirax Sarco Canada Ltd.

• Sunroc Corp.

• TAM Systems, Inc.

• Tecogen

• Thermal Care

• Thomas & Betts

• Trane Company

• Unlimited Craftsmanship & Design

• Vilter Mfg. Corp.

• Water Technology, Inc.

• Yazaki Energy Systems

• York International Corp.