Dernekler

Air Conditioning Research Institute
American Society of Mechanical Engineers

Northamerican Heating, Refrigeration & Airconditioning Wholesalers
Plumbing Heating Cooling Contractors Association
Refrigeration Service Engineers Society
Sheet Metal and Air Conditioning Contractors' National Association
Underwriters Laboratories

Air Conditioning Contractors of America
American Society of Heating, Refrigerating & A/C Engineers

Alternative Fluorocarbons Environmental Acceptability Study
Association of Home Appliance Manufacturers
Air Movement & Control Association
American National Standards Institute
Air-conditioning & Refrigeration Wholesalers Association
Gas Appliance Manufacturers Association
Geothermal Heat Pump Consortium
Heating, Refrigerating, & Air-Conditioning Institute of Canada
Institute of Heating and Air Conditioning Industries
Mechanical Contractors Association of America
National Air Duct Cleaners Association
National Association of Manufacturers
North American Technician Excellence Program
American Gas Association Research Home Page
American Gas Cooling Center

Geothermal Heat Pump Consortium
Institute of Electrical and Electronic Engineers

International Institute of Ammonia Refrigeration