Among the many organizations working to develop information on geothermal heat pump systems is ASHRAE, or American Society of Heating, Refrigeration and Air Conditioning Engineers, a professional organization whose members consist largely of engineers involved in Heating, Ventilation and Air Conditioning (HVAC) design, manufacturing, research and education. The Society is the primary source of design and application information for engineers involved in the HVAC industry. Through a variety of publications, ASHRAE makes this information available to its 60,000 members and the public