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Acme fans, blowers & ventilation equipment
American Hardware Manufacturers Association
Air Conditioning and Refrigeration Institute
American Supply Association
American Water Works Association
American Society of Heating, Refrigeration & Air Conditioning
Engineers Building Officials & Code Administrators (BOCA)
Council of American Building Officials
Canadian Institute of Plumbing and Heating
Copper Development Association
Gas Processors Association
Gas Research Institute
International Assoc. of Plumbing & Mechanical Officials
International Conference of Building Officials
The Manufacturers Standardization Society of the Valve and Fitting
Industry(MSS)
Mechanical Contractors Association of America
Nat'l Assoc. of Plumbing, Heating, Cooling Contractors
Nat'l Propane Gas Association
NSF International
Pacific Fire Safety
Piping Industry Progress & Education
Pipe Trades Association
Plastic Pipe & Fittings Association
Plumbing Manufacturers Institute
Manufacturers of rooftop units, coil products
Underwriters Laboratories Inc.
Publications:
The Air Conditioning, Heating and Refrigeration News
Drinking Water & Backflow Prevention Magazine
Oilheating: Journal of Indoor Comfort Marketing
PHC Profit Report
Plumbing Engineer
Plumbing & Mechanical Magazine
Refrigeration Service and Contracting
Advertisers:
AAF International
Heating, ventilating and air conditioning equipment
Hudson, Ink
Heating, Ventilating and Air Conditioning Market
Consumers/Homeowners:
Ductbusters, Inc.
Heating Help
Interactive Plumbing Network
Perfection Home Systems Inc
National Association of Home Builders Research Center
National Association of Home Inspectors
State Contractors
Warm Air
Others:
Cooling Technology Institute
Envirosense Consortium
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