Abstract: A self contained heating system comprises a closed circuit containing a refrigerant. The closed circuit includes a heat exchange portion, a condensing portion, an evaporator portion and a compressing portion. Superheated, evaporated gas is introduced into the compressing zone to raise the temperature of the evaporated gas discharged therefrom and introduced back into the heat exchange portion. The amount of heat energy contained by the refrigerant is increased while it is in a heat transfer zone. The additional heat energy is released from the refrigerant in a condensing zone. A smaller volume of evaporated gas is exposed to the higher heat being transferred from the condensing zone and is saturated with the heat energy within the evaporator zone before being directed to the inlet side of the compressor. The heat generating system does not require drawing any heat from any other source outside the heat generating system of this invention.