Associations

• ABMA - American Boiler Manufacturers Association
• ACCA - Air Conditioning Contractors of America
• ACCA-NCC - Air Conditioning Contractors of America - National Capital Chapter
• AFE Association for Facility Engineering
• AGCC - American Gas Cooling Center
• AIA American Institute of Architects
• ARI Air Conditioning and Refrigeration Institute 
• ASHRAE American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc.
• ASES - American Solar Energy Society Inc.
• BOMA - Building Owners & Managers Association International
• CIBSE - Chartered Institution of Building Services Engineers
• EPRI - Electric Power Research Institute
• FETA/HPA - Heat Pump Association
• GHPC - Geothermal Heat Pump Consortium
• GRI - Gas Research Institute
• IEA/HPC - Heat Pump Centre - U.S. National Team
• NSPE - National Society of Professional Engineers
• RSES - Refrigeration Service Engineers Society
• SMWIA - Sheet Metal Workers International Association

Manufacturers

• A.O. Smith Corp
• A-1 Components
• Amprobe
• Aprilaire
• Bacharach
• Berner International
• Bristol Compressors
• Carlyle Compressor
• Carrier
• Carrier Parts & Supplies (Totaline)
• Climatemaster
• Control Products (CPS)
• Cooper Instrument Corp.
• Copeland 
• Danfoss
• Diversitech
• Dust Free
• Dwyer Instruments
• Everpure
• Fieldpiece Instruments
• First Company
• Garman
• General Filters
• Glasfloss Industries
• Hartell
• Heatcraft
• Heil
• Hoffman Controls
• Honeywell
• Ice-O-Matic / Mile High Equipment Co.
• Johnson Controls
• J.W.Harris
• Kele & Associates
• Little Giant
• Magic Aire (United Electric)
• Malco Products
• Manitowoc Ice, Inc.
• Mannix Testing & Measurement
• Metal-Fab Inc.
• MicroMetl
• Mile High Equipment / Ice-O-matic
• Nu-Calgon
• Parker-Hannifin 
• Paul Mueller Co.
• Payne
• Porter Cable Corp.
• Raychem Corp.
• Rectorseal
• Refrigeration Research
• Refrigeration Technologies
• Research Products Corp.
• Reznor
• Ritchie Engineering
• Robinair
• Russell Coil, Inc.
• Sealed Unit Parts
• Sporlan Valve
• Standard Refrigeration
• Superior Valve
• Taco HVAC
• Temprite
• Thybar Corp.
• Tjernlund Products
• Totaline
• Trion Inc.
• Turbotorch
• Unico Inc.
• Uniweld
• USA Coil
• Veris Industries
• White Rodgers
• Worthington Cylinders

Government/International Agencies

• Commerce Department's Advanced Technology Program, a government/private-sector partnership program
• U.S. DOE - EnergyNetwork, U.S. Department of Energy
• U.S. DOE - National Labs and Programs -Fermi, Alamos, etc. - graphics access only
• DOE ESnet homepage
• EPA The Environmental Protection Agency
• U.S. EPA - Energy Star Programs
• U.S. EPA - Stratospheric Ozone Protection Home Page
• FETA - Federation of Environmental Trade Associations of Great Britain
• GHPC NIRC - Geothermal Heat Pump Consortium National Information Resource Center
• HRAI - Heating, Refrigerating and Air-Conditioning Institute of Canada
• IEA - International Energy Agency
• IGSHPA - International Ground Source Heat Pump Association
• ISA - International Society for Measurement and Control
• ISES - International Solar Energy Society
• U.S. Patent - Classes - Engineering Group

Online Resources

• ANSI American National Standards Institute
• EnviroSense Consortium
• Electronic Cooling
• FacilitiesNet
• ISO
• The Sci.Engr.Heat-Vent-AC Threads Archive

Publications

• Air Conditioning, Heating & Refrigeration News
• Business News Publishing Company
• Building Design and Construction
• Consulting-Specifying Engineer
• Contracting Business Interactive
• Engineered Systems
• Industrial Maintenance and Plant Operations
• The Reeves Journal
• Reliability Magazine
• Supply House Times
• The Wholesaler