Air-Conditioning Contractors of America

    ACCA is a non-profit association whose membership includes more than 60,000 professionals and 4,000 businesses in the indoor environment and energy services community. We work together to promote professional contracting, energy efficiency, and healthy, comfortable indoor environments.



    Air-Conditioning and Refrigeration Institute

    AHRI is a trade association representing manufacturers of HVACR and water heating equipment globally.



    American Society of Mechanical Engineers

    ASME is a non-profit organization with over 140,000 members including engineers, college students, professors and corporate executives.



    American Society of Heating Refrigeration and Air-Conditioning Engineers

    ASHRAE focuses on building energy efficient systems, indoor air quality and HVAC sustainability.



    Gas Appliances Manufacturers Association




    Institute of Electrical and Electronics Engineers

    IEEE is a professional association geared toward advancing technological innovation. 



    Mechanical Contractors Association of America

    MCAA serves nearly 2,500 firms within the HVAC and plumbing industries. MCAA creates and provides informational material and programs for industry professionals to maintain technical expertise. 



    National Association of Plumbing-Heating-Cooling Contractors

    PHCC is comprised of nearly 4,000 contractors who work in the HVAC industry. Members take part in technical educational training and take part in legislative issues surrounding the HVAC industry. 



    Heating, Air Conditioning and Refrigeration Distributors International

    HARDI supplies HVAC industry professionals and distributors with installation and service repair information in nearly 4,1000 locations and 500 supplier vendors. 



    Refrigeration Service Engineers Society

    RSES is a leading source for training and education with in the HVAC industry. RSES currently houses more than 11,000 members and nearly 150 chapters in North America. 



    Sheet Metal and Air-Conditioning Constractors' National Association

    SMACNA is an internationally recognized standards-setting organization. Recognized for its technical standards and expertise in the HVAC and sheet metal industries.



    North American Technician Excellence

    NATE  is the nation’s largest non-profit certification organization for HVACR contractors and technicians. NATE is the only technician certification organization governed, owned, operated, developed and supported by the HVACR industry.


    Engineered Systems

    Engineered Systems

    Engineered Systems delivers ideas, technical and legislative information to the engineering and HVAC community. 


    HPAC Engineering Interactive

    Heating, Piping, Air Conditioning Engineering

    HPAC provides nearly 35,000 engineering professionals with safety, comfort and HVACR technology news. 


    Contracting Business

    Contracting Business

    Contracting Business provides commercial, residential and refrigeration professionals with all of the latest news and events within the HVAC industry. 


    The News

    Air Conditioning, Heating, Refrigeration News

    The NEWS is the HVAC industry's most trusted communication source for the HVACR buyer. The NEWS covers trends and news from manufactures, contractors, wholesalers and so much more.



    Oil and Energy Service Professionals

    OESP consists of about 1500 dedicated energy professionals who service the energy needs of the Northeast portion of the United States.