Alliance to Save Energy - nonprofit coalition of prominent business, government, environmental, and consumer leaders who promote the efficient and clean use of energy worldwide

The American Gas Association - www.aga.org

American National Standards Institute - www.ansi.org
www.ashrae.org – American Society of Heating,  Regrigerating,  and Air Conditioning Engineers,  Inc.

ARI - Air-Conditioning & Refrigeration Institute

ARTI Refrigerant Database - information system on alternative refrigerants

Association of Sheet Metal and Air Conditioning Contractors SMACNA

Boilerroom.com - Resource for boiler related information

Chillertech - comprehensive site dedicated to water chillers

Cool Sense Network - resources of information and tools about retrofit of refrigeration systems

Cooling Tower Institute - resources of information about cooling towers

District Cooling - information resources on the distribution of cooling from one or more sources to multiple buildings.

EnergyGuide - resources of products and services for reduction of energy cost

Energy Guy - web site providing information regarding energy technologies

EnergyRoadMaps - step-by-step web guide to retrofitting commercial properties by outlining different approaches to achieving high performance, energy efficient buildings  

Energy Star- labeled heating and cooling equipment

EREN - comprehensive resource for energy efficiency and renewable energy information fields on a wordwide scale.

Industrial Heating Magazine - www.industrialheating.com
Institute of Electrical and Electronics Engineers - www.ieee.org
Institute of Gas Technology - www.igt.org

International Institute of Refrigeration - scientific and technical intergovernmental organization enabling pooling of scientific and industrial know-how in all refrigeration National Fire Protection Agency - www.nfpa.org

Process Heating Magazine - www.process-heating.com