BTU is used to signify the heating and cooling capacity of a system and the heat losses and gains of buildings and homes. The number of BTUs produced in one hour. A heat pump system that uses a loop of buried plastic pipe as a heat exchanger.
Loops can be horizontal or vertical.
The higher the COP, the more efficient the system. The central part of a heat pump system. The compressor increases the pressure and temperature of the refrigerant and simultaneously reduces its volume while causing the refrigerant to move through the system. Over-sizing a heating or cooling system increases cycling losses. A device for recovering superheat from the compressor discharge gas of a heat pump or central air conditioner for use in heating or preheating water.