Mission is improving the way homes perform in terms of health, safety, durability and the reduction of energy use/cost. Training, conferences, and contacts.

Trade association for flexible duct manufacturers and suppliers. Mission statement, history, performance standards, members, and installation instructions.

Conference schedule, research projects open for bid, and list of sponsors.

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.

Press releases, white papers, related news, and contacts.

National federation for wholesale distributors and manufacturers. Membership, press releases, calendar of events, and e-commerce software.

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.

Nonprofit self-governing technical association dedicated to improvement in technology, design, performance and maintenance of cooling towers. Membership, publications, certification, and meetings.

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.

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 energy-efficient, environmentally friendly heating and cooling technology.

Not-for-profit trade organization dedicated to advancing the science of wholesale distribution in the HVACR industry. Calendar of events, member directory, and news.

HVI represents manufacturers of residential ventilation products from the United States, Canada, Asia and Europe. Product directory, guidelines, and benefits.

Publications, seminars, and contacts.

Members included contractors, wholesalers and manufacturers. Mission is to set industry standards, educate contractors, and inform the public. Includes membership, articles, and contact information.

Trade association of independent sales representatives in the plumbing, heating, cooling, and piping industry. Membership, newsletter, and contact information.

Non-profit trade association of contractors, manufacturers, distributors and utility firms. Mission, membership, events, and technical seminars.

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 chilled water for heating, cooling and process uses. Resource guide, map of district areas, membership, and news.

Promotes education, information and industry standards for the safe and proper use of ammonia as a refrigerant. Membership, events, contact information, and news.

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.

Trade association of North American manufacturers of fiber glass, rock wool and slag wool insulation products. Literature, membership, and news.

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.

An independent organization that awards accreditation to HVACR education programs that have met industry-validated standards. Goals, process, costs, and contacts.

Establishes standards for technician competency and education. Accreditation, certification, and contact information; Test results.

Organization made up of contractors, sales reps, wholesalers, manufacturers and designers within the radiant panel industry. Chapter locations, membership, technical articles, seminars, and events.

Represents the interests and concerns of U.S. and Canadian manufacturers of valves and actuators. Membership, calendar, news, products, and services.