The Air Conditioning, Heating, and Refrigeration Institute (AHRI) is the trade association representing manufacturers of HVACR and water heating equipment, within the global HVACR industry. AHRI’s 315 member companies manufacture quality, efficient, and innovative residential and commercial air conditioning, space heating, water heating, and commercial refrigeration equipment and components for sale in North America and around the world.

The Alliance for Responsible Atmospheric Policy (Alliance) is an industry coalition that was organized in 1980 to address the issue of stratospheric ozone depletion. It represents businesses that produced HFCs, as well as manufacturers that used HFCs in air conditioning, refrigeration, appliances, foam insulation, other foam products, electronics, aerosols, and metered dose inhalers.

ASA is the voice of trade contractors to improve the overall business environment for the construction industry. ASA is also the united voice of the subcontractors, specialty trade contractors, and suppliers before all branches (executive, legislative, judicial) and levels (federal, state, local) of government.

The Center for Climate and Energy Solutions (C2ES) is an independent, nonpartisan, non-profit organization working to forge practical solutions to climate change. Their mission is to advance strong policy and action to reduce greenhouse gas emissions, promote clean energy, and strengthen resilience to climate impacts.

ITI supports apprenticeship and advanced career training for union workers in the sheet metal industry throughout the United States and Canada. Located in Fairfax, Virginia, the ITI produces a standardized curriculum supported by a wide variety of training materials free of charge to apprentices and journey-level workers who work in the following specialized disciplines: Architectural Sheet Metal, Building Information Modeling,& HVAC Service.

An ANSI-accredited Standards Developing Organization, the National Electrical Manufacturers Association (NEMA) gives members a competitive edge in today's rapidly changing marketplace by expanding market opportunities, acquiring exclusive business intelligence, removing market barriers, building supply chain connections, and harnessing innovation.

The Testing, Adjusting and Balancing Bureau (TABB) is an organization made up of top heating, ventilating, air conditioning and refrigeration professionals. Since 1981, TABB has set the certification standards for the HVAC industry. TABB is the first and only HVAC testing, adjusting and balancing certification program accredited by the American National Standards Institute (ANSI).