Heating is the primary role of air conditioning. Most vehicles are fitted with heating systems. The engine cooling liquid is traditionally used as the energy source for heating purposes. Part of the heat produced by the engine is channelled to the cabin via the heating radiator. The heating components are located inside the HVAC after the blower.
The heater core:
- Is an air/water exchanger (uses engine cooling liquid energy)
- Increases the cabin temperature
- Demists & defrosts glass