US Patent 7779639 HVAC system for hybrid vehicles using thermoelectric devices

A heating, ventilating and air conditioning (HVAC) system for a hybrid vehicle is disclosed, the HVAC system including at least one thermoelectric device for providing supplemental heating and cooling for air supplied to a passenger compartment of the vehicle. In some embodiments, the HVAC system has at least a first circuit and a second circuit. The first circuit can be configured to remove heat from an electric side of a hybrid vehicle. The second circuit can be configured to remove heat from a fuel-fed side of a hybrid vehicle.