| ACHR The News online - Web version of The Air Conditioning, Heating & Refrigeration News journal. This is considered the premiere journal in the industry |
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| American Society for Heating, Refrigeration & Air-Conditioning Engineers - Professional site for HVAC members. |
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| HVAC City - A consumer information source created by Wrightsoft Corp and the Air Conditioning Contractors of America which links to HVAC Internet sites. This site may be of interest to building owners, contractors, manufacturers and distributors. |
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| HVAC Mall - A forum and resource center for people in the industry. This site connects buyers with sellers, end-users with service providers and it is totally free. |
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| HVAC Portal - Billing itself as the “home page of HVAC Industry” this site offers discussion groups, industry links, and free interactive calculating tools. |
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| HVAC Resource Sites - Created by an Internet newsgroup, sci.energr.heat-vent-ac, this site provides links to topics of interest to the HVAC/R professional. |
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