RESIDENTIAL HEAT PUMP FOR NORTHERN CLIMATES.

This article describes the development and evaluation of a prototype residential air-to-air heat pump. This machine was constructed from available components arranged to maximize the resulting winter seasonal efficiency. Other performance factors such as reliability were also considered when selecting the final design. The steady-state coefficient of performance values for the final experimental heat pump are 35 to 45 per cent higher than those of commercially available models tested in 1976.