TY - BOOK ED - International Energy Agency (IEA) TI - Heat pump systems: a technology review SN - 92-64-123 U1 - 354.43 PY - 1982/// CY - Paris PB - OECD, IEA KW - Conservación de la Energía KW - Energía Térmica N1 - 04229; The paper examines that the use of heat pumps can save primary energy in considerable quantities, particulary in cooler regions. In addition, the heat pump can save significant quantities of oil, especially in the residential retrofit and replacement markets and when used as and add-on device for existing heating system. In the commercial and industrial sectors where financial criteria are applied to all investment decisions, the heat pump has achieved market success commensurate with the cost - effectiveness of the device ER -