Eight manufacturers are putting what they learned during the Residential Cold Climate Heat Pump Technology Challenge into new ...
According to MSN, Lennox International ... The “YVWH-200 Water-to-Water Variable Speed Dual Screw Heat Pump” reportedly has a combined coefficient of performance of 4.1, meaning that about ...
The first heat pumps to pass the U.S. Department of Energy's Cold Climate Heat Pump Challenge might be in customers' homes by the end of the year.