Air-Conditioning and Refrigeration Technology Institute
- Conference schedule, research projects open for bid, and list of sponsors.
- http://www.arti-research.org/index.php

Heating, Airconditioning and Refrigeration Distributors International
- Not-for-profit trade organization dedicated to advancing the science of wholesale distribution in the HVACR industry. Calendar of events, member directory, and news.
- http://www.hardinet.org/

Partnership for Air-Conditioning, Heating, Refrigeration Accreditation
- An independent organization that awards accreditation to HVACR education programs that have met industry-validated standards. Goals, process, costs, and contacts.
- http://www.pahrahvacr.org

Program Accreditation and Technician Certification
- Establishes standards for technician competency and education. Accreditation, certification, and contact information; Test results.
- http://www.hvacexcellence.org

Hydronic Heating Association
- Members included contractors, wholesalers and manufacturers. Mission is to set industry standards, educate contractors, and inform the public. Includes membership, articles, and contact information.
- http://www.comfortableheat.net

North American Technician Excellence (NATE)
- Independent, non-profit national organization represents a shared commitment to improving the HVAC/R industry through voluntary testing and certification. Certification information and preparation, news, and contact information.
- http://www.natex.org/

Vibration, Isolation and Seismic Control Manufacturers Association
- Manufacturers of seismic restrain, vibration isolation, and noise isolation equipment. Meeting schedule, members, requirements, and contact information.
- http://www.viscma.com

Affordable Comfort (ACI)
- Mission is improving home performance and green construction in terms of health, safety, durability and energy efficiency. Training, news, conferences, webcasts, seminars, and contacts.
- http://www.affordablecomfort.org

HVAC&R Center - University of Wisconsin
- Publications, seminars, and contacts.
- http://www.engr.wisc.edu/centers/hvac

Home Ventilating Institute
- HVI represents manufacturers of residential ventilation products from the United States, Canada, Asia and Europe. Product directory, guidelines, and benefits.
- http://www.hvi.org/

Valve Manufacturers Association
- Represents the interests and concerns of U.S. and Canadian manufacturers of valves and actuators. Membership, calendar, news, products, and services.
- http://www.vma.org/

National Air Filtration Association
- NAFA is comprised of individuals and companies engaged in the sale, service and manufacture of the air filtration products. Membership, bylaws, training, certification, events, and forum.
- http://www.nafahq.org/

North American Insulation Manufacturers Association
- Trade association of North American manufacturers of fiber glass, rock wool and slag wool insulation products. Literature, membership, and news.
- http://www.naima.org/

Cooling Technology Institute
- Nonprofit self-governing technical association dedicated to improvement in technology, design, performance and maintenance of cooling towers. Membership, publications, certification, and meetings.
- http://www.cti.org/

ARI CoolNet
- The Air-Conditioning and Refrigeration Institute represents manufacturers of U.S. produced air-conditioning equipment. Publications, press releases, members, meetings and special events, research activities, training, and certification.
- http://www.ari.org/

International Institute of Ammonia Refrigeration
- Promotes education, information and industry standards for the safe and proper use of ammonia as a refrigerant. Membership, events, contact information, and news.
- http://www.iiar.org/

Radiant Panel Association
- Organization made up of contractors, sales reps, wholesalers, manufacturers and designers within the radiant panel industry. Chapter locations, membership, technical articles, seminars, and events.
- http://www.rpa-info.com/

Institute of Heating and Air Conditioning Industries
- Non-profit trade association of contractors, manufacturers, distributors and utility firms. Mission, membership, events, and technical seminars.
- http://www.ihaci.org/

Independent Manufacturers Representatives
- Trade association of independent sales representatives in the plumbing, heating, cooling, and piping industry. Membership, newsletter, and contact information.
- http://www.aimr.net/

Geothermal Heat Pump Consortium
- Nonprofit organization engaged in implementing the National Earth Comfort Program a collaborative effort between the US Department of Energy, the US Environmental Protection Agency, and private sector organizations interested in promoting the growth of en
- http://www.ghpc.org/

Gas Appliance Manufacturers Association
- Represents manufacturers of appliances, components and products used in connection with space heating, water heating and commercial food service. Publications, press releases, seminars, and consumer information.
- http://www.gamanet.org/

American Supply Association
- National federation for wholesale distributors and manufacturers. Membership, press releases, calendar of events, and e-commerce software.
- http://www.asa.net/

American Boiler Manufacturers Association
- Represents manufacturers of commercial, industrial and utility steam generating and fuel burning equipment, as well as suppliers to the industry. Members and membership, conferences and special events, and publications.
- http://www.abma.com/

International District Energy Association
- Membership consists of representatives from utilities, municipalities, universities, hospitals, military bases, airports, industrial parks, and other physical plant systems engaged in the supplying of thermal energy in the form of steam, and hot and chill
- http://www.districtenergy.org/

Air Diffusion Council
- Trade association for flexible duct manufacturers and suppliers. Mission statement, history, performance standards, members, and installation instructions.
- http://www.flexibleduct.org/