General Agencies and Associations
- American Institute of Architects
- American National Standards Institute
- American Society for Testing and Materials
- Building Officials and Code Administrators International
- Building Owners and Managers Association
- Design Build Institute of America
- International Code Council
- International Facility Management Association
- National Council of Examiners for Engineering and Surveying
- National Institute of Building Sciences
- National Society of Professional Engineers
- United States Green Building Council
Federal Agencies
Mechanical Associations
- Air-Conditioning and Refrigeration Institute
- Air Movement and Control Association International
- American Society of Heating, Refrigerating and Air-Conditioning Engineers
- American Society of Mechanical Engineers
- National Capital Chapter – ASHRAE
- Sheet Metal and Air Conditioning Contractors’ National Association
Electrical Associations
Plumbing/Fire Protection Associations
Energy & Environmental Associations
Certification & Testing
Indoor Air Quality
Safety & Health
- Centers for Disease Control and Prevention
- Federal Emergency Management Agency
- National Institute for Occupational Safety and Health
- National Institute for Occupational Safety and Health – Protecting Building Environments
- Occupational Safety and Health Administration
- U.S. Department of Health & Human Services
- U.S. Department of Homeland Security
General Codes
Manufacturers - Mechanical
- Hammond Valve
- Hartzell Fan
- Honeywell
- Howden Buffalo
- Indeeco
- Ingersoll-Rand
- Invensys Building Systems
- Jamesbury
- Jay R. Smith
- Jenkins Valve
- Johnson Controls
- Kennedy Valve
- Kewanee Boiler
- Krueger
- LAKOS
- Liebert
- Loren Cook
- Mammoth, Inc.
- Markel
- Marley
- McCANNA
- McQuay International
- METALAIRE
- Milwaukee Valve
- Mueller
- Nailor Industries
MANUFACTURERS – PLUMBING/FIRE PROTECTION
- Allied Tube & Conduit
- American Standard
- A.O. Smith
- Aurora
- Badger Fire Protection
- Badger Meter
- Beneke
- Central Sprinkler
- Chicago Faucets
- Church
- Crane Plumbing
- Crane Valves
- DEMCO Valves
- Eljer
- Elkay
- Elkhart Products
- Everpure
- Fairbanks Morse
- Federal Pumps
- F.E. Myers
- Fiat
- Filtrine
- Fyr Fyter
- Grinnell Valves & Controls
- Guardian Equipment
- Guardian Fire Equipment
- Halsey Taylor
- Hammond Valve
- Haws Corporation
- Hersey Water Meters
- In-Sink-Erator
- Invensys Metering System
- Jamesbury
- Jay R. Smith
- Jenkins Valve
- Josam
- Kennedy Valve
- Kohler
- McCANNA
- McGuire Manufacturing
- Milwaukee Valve
- Mueller
- NIBCO
- Norris
- Olsonite
- PACO Pumps
- Patterson Pump
- Potter Roemer
MANUFACTURERS – ELECTRICAL
- Advanced Lightning Systems
- AFC Cable Systems
- Allen-Bradley
- Automatic Switch Company
- Caterpillar Engines
- Cerberus Pyrotronics
- Columbia Lighting
- Control Systems International
- Cooper Bussmann
- Cooper Power Systems
- Day-Brite
- Detroit Diesel
- Eaton Cutler-Hammer
- Edwards Signaling
- Gardco Lighting
- General Electric