- ABMA (American Boiler Manufacturers Association)
- ABC - Associated Builders & Contractors
- ACCA - Air Conditioning Contractors of America
- ACCA-NCC - Air Conditioning Contractors of America - National Capital Chapter
- MIACCA - Michigan Air Conditioning Contractors of America
- AFE Association for Facility Engineering
- AHAM - Association of Home Appliance Manufacturers
- AIA American Institute of Architects
- AMCA - Air Movement and Control Association Home Page
- ANSI - American National Standards Institute
- APPA - Association of Higher Education Facilities Officers
- ARI Air Conditioning and Refrigeration Institute
- ASHRAE American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc.
- ASA - American Supply Association
- ASME - American Society of Mechanical Engineers
- ASHE - American society for healthcare Engineering
- ASHI - American Society of Home Inspectors
- BOMA - Building Owners & Managers Association International
- CIBSE - Chartered Institution of Building Services Engineers
- EPRI - Electric Power Research Institute
- GHPC - Geothermal Heat Pump Consortium
- GTI - Gas Technology Institute
- IEEE - IEEE Control Systems Society
- ICC - International Code Council
- IFMA - International Facility Management Association
- NARUC - National Association of Regulatory Utility Commissioners
- NATE - North American Technical Excellence Program
- NAM - National Association of Manufacturers
- NFRC - Nation Fenetration Rating Council
- NFPA - National Fire Protection Association
- NSPE - National Society of Professional Engineers
- SMACNA - Sheet Metal and Air Conditioning Contractors National Association
- SMWIA - Sheet Metal Workers International Association
- EEI - Edison Electric Institute
- MCAA - Mechanical Contractors Association of America
- MSCA - Mechanical Service Contractors of America
- NAHB - National Association of Home Builders
- PHCCNA - Plumbing, Heating, Cooling Contractors National Association
- RSES - Refrigeration Service Engineers Society
- IIAR - International Institute of Ammonia Refrigeration
- HRAI - Heating, Refrigeration & Air Conditioning Institute of Canada
- DeviceNet - ODVA
- ControlNet