Patent ID: 8517087

Claim:
A heating and air conditioning system of a passenger compartment of a vehicle, comprising: a first heat exchanger; a primary loop passing through the first heat exchanger and further comprising a compressor, a second heat exchanger, a flow reversing means for reversing the fluid flow through the first heat exchanger, and a first refrigerant metering device; a secondary loop passing through the first heat exchanger and further comprising a liquid pump, a third heat exchanger, a secondary heat source, and a bypass means for selectively bypassing the secondary heat source; wherein the secondary loop is thermally coupled to the primary loop by the first heat exchanger and the second heat exchanger is thermally coupled to an interior of the passenger compartment; and, further comprising a first air movement device disposed proximate the second heat exchanger so as to circulate air from the interior of the passenger compartment through the second heat exchanger.