Conservation/Environment

Two super-efficient heat pumps tested by Chelan County PUD and Wenatchee Valley College have shown promise toward meeting manufacturers' claims of reducing heating and cooling costs significantly.

The Acadia Heat Pump (formerly called the All Climate Heat Pump), made by Hallowell International  of Bangor, Maine, was installed at Wenatchee Valley College in 2006. The Cold Climate Heat Pump, made by Nyle Special Products, was installed there in 2004. Both  appear to work well in climates above 0 degrees Fahrenheit, although they have not performed as well as promoted in the manufacturers' literature.

Conventional air source heat pumps capture heat contained in the outside air to warm homes and businesses. While the air temperature outside on a winter day feels cold to us, it still holds enough heat to warm the refrigerant within the heat pump system. However, once the thermometer drops below about 30 degrees, conventional air source heat pumps usually require use of an auxiliary heat source, such as an electric furnace, to maintain comfort.

Manufacturing problems have prevented either product from being available to consumers on a large scale. However, the Hallowell line is available locally through The Salcido Connection, HVAC service contractor in Wenatchee. PUD staff will not endorse the products without independent certification from the Air Conditioning, Heating and Refrigeration Institute (ARI).

To learn more

Product and Technology Review: Acadia Heat Pump - Washington State University Energy Ideas Clearinghouse

"Can a New Kind of Heat Pump Change the World?" - Architectural Record