» 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/

» Affordable Comfort
   Mission is improving the way homes perform in terms of health, safety, durability and the reduction of energy use/cost. Training, conferences, and contacts.
   http://www.affordablecomfort.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/

» Air Movement and Control Association
   For manufacturers of air system equipment including fans, louvers, dampers, air curtains, airflow measurement stations, and acoustic attenuators. Publications, membership, certified ratings program and seminars.
   http://www.amca.org/

» 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/

» American Gas Cooling Center
   Press releases, white papers, related news, and contacts.
   http://www.agcc.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/

» Commercial Refrigerator Manufacturers
   Dedicated to advancing the common interest of the commercial refrigeration industry. Membership, meetings and events, and press releases.
   http://www.ari.org/crm/

» 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/

» 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/

» 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/

» Great Southwestern Illinois Plumbing, Heating, Cooling, Mechanical Contractors
   Office location, contact list, and membership application.
   http://www.gswphcc.com

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

» 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/

» 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/

» 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

» 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/

» 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/

» 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/

» 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/

» 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/

» 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/

» 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

» 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/

» 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/

» 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