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| ABMA | American Boiler Manufacturers Association |
| ACCA | Air Conditioning Contractors of America |
| ACCA/NCC | Air Conditioning Contractors of America, National Capital Chapter |
| AESP | Association of Energy Service Professionals |
| AFE | Association for Facility Engineering |
| AGA | American Gas Association |
| AGCC | American Gas Cooling Center |
| AIA | American Institute of Architects |
| APPA | Association of Higher Education Facilities Officers |
| ARI | Air Conditioning and Refrigeration Institute |
| ASA | American Supply Association |
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| ASHE | American Society for Healthcare Engineering |
| ASHI | American Society of Home Inspectors |
| ASHRAE | American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. |
| ASME | American Society of Mechanical Engineers |
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| BOMA | Building Owners & Managers Association International |
| CIBSE | Chartered Institution of Building Services Engineers |
| EEI | Edison Electric Institute |
| EPRI | Electric Power Research Institute |
| GHPC | Geothermal Heat Pump Consortium |
| IDEA | International District Energy Association |
| IEA/HPC | Heat Pump Centre, U.S. National Team |
| IEEE | IEEE Control Systems Society |
| ICC | International Code Council |
| IFMA | International Facility Management Association |
| ISFE | International society of Facilities Executives |
| NARUC | National Association of Regulatory Utility Commissioners |
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| NFPA | National Fire Protection Association |
| NFRC | Nation Fenetration Rating Council |
| NSPE | National Society of Professional Engineers |
| SMACNA | Sheet Metal and Air Conditioning Contractors National Association |
| SMWIA | Sheet Metal Workers International Association |
A Member of The United Technologies Corporation Family
