ACCA – Air Conditioning Contractors of America
ACEEE – American Council for an Energy-Efficient Economy
AHRI – Air-Conditioning and Refrigeration Institute – Coolnet
AHRI Directory of Certified Product Performance
ASHRAE – American Society of Heating, Refrigerating and Air-Conditioning Engineers
Department of Energy Geothermal Energy Program
EPRI – Electric Power Research Institute
GHPC – Geothermal Heat Pump Consortium
IEA Heat Pumping Technologies (formerly IEA Heat Pump Programme)