Recovering heat produced during the refrigeration process is possible and can help save energy and cut costs. Heat-recovery equipment can be fitted to existing plant or integrated in new buildings, and heat from the heat rejection stage of the refrigeration process can be recovered from the condenser. The recovered heat can then be used for general space heating or hot water.

There are two types of heat recovery, depending on the installation and refrigerant used:

High-grade heat recovery: Heat (of between 60º C and 90º C) is recuperated in refrigeration systems from de-superheating the refrigerant between the compressor and the condenser. The heat exchanger (de-superheater) is installed, conducting the heat from the refrigerant on one side to the fluid to be heated on the other.

Low-grade heat: Heat (of between 20º C and 40º C) comes from the refrigerant being condensed.