Some standard Jeep heater controls include the 2002-2004 Jeep Wrangler A/C Control Switch Mopar and the 2005 Jeep Wrangler Heater Control (Without Air Conditioning) Mopar 55056556AA. Other options are the MOPAR® Climate Control Knob.
The heater control connects directly to the vehicle's heating system, which consists of the heater core, the heater hoses, the blower motor and the HVAC control panel. A percentage of the heat built up by the engine is transferred through the heat system, while the rest is directed through the exhaust system. The built up heat is then treated through the vehicle's coolant storage and blown through the heater system.