| Aertecno: Engineering and planning of HVAC, hydric, fire-fighting, and electric installations. |
| Air Systems Engineering, Inc.: Design-build construction services for HVAC. Also, supplies 'Automatrix' temperature controls. Fabricates custom sheet metal. Licensed mechanical and electrical engineers. |
| AMC Engineers: Provides a full range of mechanical and electrical engineering services for buildings and related facilities. |
| Amcor Engineering: Mechanical design, plans, and specifations for HVAC, plumbing, and solar systems for builders, contractors, and architects. |
| Arun Chaiseri Consulting Group.: Design, construction management, electrical and mechanical design, energy management, architect and interior design. |
| BJP Consulting Group Ltd: Complete engineering service for the built environment. Including building security systems, environmental control systems, energy conservation, public health systems. |
| Bredson & Associates, Inc.: Mechanical, electrical, plumbing and fire protection engineers. |
| Building Safety: Specializing in hazardous materials and processes and their applications to building codes. |
| CMD Asia Consulting: Building services and HVAC consultants with offices throughout Asia. |
| Constructive Technologies Group, Inc.: Provides engineering design services in the mechanical, electrical and plumbing disciplines. Focus is on implementing energy-efficient and sustainable design concepts. |
| D & J Design Services: Provides professional fire sprinkler design, stocklisting, survey, and consulting. Highly experienced engineers. |
| Engineering Professionals, Ltd.: Professional fire protection engineering firm offering code consultation, systems design, litigation support. |
| Eta: Provides sustainable building, HVAC, electrical, plumbing (MEP) designs to architects and building owners. |
| GfA Aerophysics Simulation Services: Simulation services for the construction industry including thermal building analysis and ventilation simulation. |
| Gupex: Design and installation of ventilation solutions for corrosive and hostile environments. |
| Hensall Mechanical Services: Heating, ventilation, air conditioning, design build, project management expertise. |
| KJWW Engineering Consultants: Provides consulting for HVAC, plumbing, fire protection, electrical, telecommunications, and structural engineering. |
| KOA Engineering Corporation: Iranian HVAC contractor. |
| Logostikon (Pty) Ltd: South African-based consultant specializing in HVAC applications. |
| Lundquist, Killeen, Potvin & Bender, Inc.: Consulting engineers based in St. Paul, MN. Mechanical and electrical engineering services for buildings. |
| MaGrann Associates: Specializes in energy consulting, engineering and other related services for the building and energy industries. |
| Paul Mannering Associates: A consultant engineer for building services controls and building management systems. |
| Piedmont Mechanical: Specializes in HVAC, piping, sheet metal, and machinery installation. |
| PrimeNET: The Air-Conditioning and Refrigeration Institute's on-line directory of certified equipment is a free-of-charge resource to find the ratings of certified products. |
| Robertson Airtech International: Turn-key services for engineering, design, fabrication, installation and service of industrial HVAC, air filtration, process piping, compressed air, and material handling systems. |
| Rotary Group Limited: Building service engineers creating comfortable and effective living and working environments throughout the world |
| Russell C. Campbell Engineering: Specializing in ventilating, air conditioning, and HVAC. |
| TEC, Inc.: Providing electrical and mechanical engineering, lighting, plumbing, HVAC, and fire protection systems design. |
| Technical Training Associates: Provides on-site training workshops and videos for HVAC/R professionals and a free Internet newsletter for HVAC/R technicians. |
| Trinidad Engineering: Provides heating, ventilation, air conditioning and refrigeration (HVAC) engineering and consulting services. |
| Weinstein Taylor and Associates: Mechanical/electrical engineers, based in Toronto, Canada, specializing in HVAC, life safety, and in the design of energy efficient systems. |
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