All types of vehicles include HVAC (Heat ventilation and air conditioning) systems, which consist of a heating fan motor. Mostly, a single electric motor is utilized to circulate both hot and cold air through the HVAC system, depending upon climactic conditions. Important components of heating fan motors are DC motor, motor housing, and fan. However, components may change according to application. Additional components include the fan relay and blower motor resister. Different types of vehicles configure heating fan motors differently. In a majority of vehicles, heater boxes are located near the passenger compartment. However, they can also be fitted near the engine compartment.