| AAF – Association of Air-Conditioning and Refrigeration of Argentina |
| ABOK – Association of Engineers for Heating, Ventilation, A/C, Heat Supply & Building Thermal Physics of Russia |
| ABRAVA – Brazilian Association of Refrigeration, Air Conditioning, Ventilation and Heating |
| ACAIRE – Colombian Association of A/C and Refrigeration |
| ACTECIR – Catalan Association of Technology, Energy, A/C & Refrigeration |
| AHGWTEL – Latvian Association of Heat, Gas & Water Technology Engineers |
| AICARR – Italian Association of Air-Conditioning, Heating & Refrigeration |
| AIRAH – Australian Institute of Refrigeration, Air-Conditioning and Heating |
| ABMA – American Boiler Manufacturers Association |
| AEE – Association of Energy Engineers |
| AIA – American Institute of Architects |
| AGA – American Gas Association |
| AMCA – Air Movement and Control Association |
| AMERIC – Mexican Association of Companies in the Industry of Building Installations |
| ANSI – American National Standards Institute |
| ARCNET – ARCNET Trade Association |
| ARI – Air-Conditioning and Refrigeration Institute |
| ARWI – Air Conditioning and Refrigeration Wholesalers International |
| ASCE – American Society of Civil Engineers |
| ASE – Alliance to Save Energy |
| ASES – American Society of Solar Engineers |
| ASHRAE – American Society of Heating, Refrigeration, and Air-Conditioning Engineers. |
| ASME – American Society of Mechanical Engineers |
| ASPE – American Society of Plumbing Engineers |
| ATECYR – Spanish Technical Association of A/C and Refrigeration |
| ATIC – Royal Technical Society of Heating, Ventilation and Related Technology Industry – Belgium |
| BACnet – BACnet Manufacturers Association |
| BOCA – Building Officials and Code Administrators International |
| British Association of Consulting Engineers |
| British Standards Institute |
| BSRAI – Building Services Research Information Association |
| CAR – Chinese Association of Refrigeration |
| China Committee of HVAC |
| China Refrigeration and Air-Conditioning Industry Association |
| CIBSE – Chartered Institute of Building Services Engineers |
| CTI – Cooling Tower Institute |
| DANVAC – Danish Society of Heating, Ventilating & A/C Engineers |
| DKV – German Society of Refrigeration & Air Conditioning Engineers |
| EFRIARC – Portuguese Association of Industrial Refrigeration and Air-Conditioning Engineers |
| EPRI – Electric Power Research Institute |
| FMB – Federation of Master Builders |
| FINVAC – Finnish Association of Heating, Piping and A/C Societies |
| GAMA – Gas Appliance Manufacturers Association |
| GHPC – Geothermal Heat Pump Consortium |
| HARDI – Heating, Air conditioning & Refrigeration Distributors International |
| HOFEST – Hall of Fame for Engineering, Science & Technology |
| HRAI – Heating, Refrigeration, and Air-Conditioning Institute of Canada |
| HVAC Excellence |
| Hydraulic Institute |
| ICC – International Code Council |
| IAPMO – International Association of Plumbing & Mechanical Officials |
| IEA Heat Pump Center |
| IEEE Standards |
| IFMA – International Facility Management Association |
| IGSHPA – The International Ground Source Heat Pump Association |
| IIAR – International Institute of Ammonia Refrigeration |
| IOR – Institute of refrigeration |
| Iran Civil Center – Technical and educational website of Iranian engineers |
| RHACE – Institute of Refrigeration, Heating and Air-Conditioning Engineers of New Zealand |
| ISA – Instrumentation, Systems and Automation Society |
| ISHRAE – Indian Society of Heating, Refrigerating & A/C Engineers |
| ISO – International Organization for Standards |
| Korea Refrigeration and Air Conditioning Industry Association |
| JRAIA – Japan Refrigeration and Air Conditioning Industry Association |
| JSAR – Japanese Society of Refrigeration and A/C Engineers |
| LITES – Lithuanian Thermotechnical Engineers Society |
| MCAA – Mechanical Contractors Association of America |
| NAOHSM – National Association of Oil Heating Service Managers |
| NBBI – National Board of Boiler and Pressure Vessel Inspectors |
| NBI – New Building’s Institute |
| NCI – National Comfort Institute |
| NECA – National Electrical Contractors Association |
| NFPA – National Fire protection Association |
| NIA – National Insulation Association |
| NORSK VVS – Norwegian Society of HVAC Engineers |
| NSPE – National Society of Professional Engineers |
| NSSN – National Resource for Global Standards |
| NVVK – Dutch Association of Refrigeration |
| Pakistan HVACR Society |
| PPFA – Plastic Pipes and Fittings Association |
| PSVARE – Philippine Society of Ventilating, A/C & Refrigerating Engineers |
| REHVA – Federation of European Heating & Air-Conditioning Associations |
| Romanian Association for Heating |
| RSES – Refrigeration Service Engineers Society |
| SAIRAC – South African Institute of Refrigeration & Air Conditioning |
| SAREK – Society of Air-Conditioning & Refrigeration Engineers of Korea |
| SCANVAC – Denmark, Finland, Iceland, Norway, Sweden National HVAC Societies |
| SHASE – Society of Heating, Air-Conditioning & Sanitary Engineers of Japan |
| SITHOK – Slovenian Society of Refrigerating, Heating & A/C Engineers |
| SMACNA – Sheet Metal and Air-Conditioning Contractors’ National Association |
| SWEDEVAC – Swedish Society of Heating & Air Conditioning Engineers |
| SWKI – Swiss Association of Heating and Ventilating Engineers |
| TTMD – Turkish Society of HVAC & Sanitary Engineers |
| TVVL – Netherlands Technical Association for Heating & Air Treatment |
| YUKO KGH – Yugoslav Society for A/C, Heating & Refrigeration |
| ISKID – (Turkey Air Conditioning & Refrigerating Manufacturers’ Association) |
