Your heater and air conditioner (hvac) have three jobs, cool the interior of the car down, heat the interior up and defrost the windshield. In its gaseous form, refrigerant can absorb a lot of heat. Auto Ac System Diagram Car Air Conditioning Air Conditioning System Ac System We will need to understand the high and low pressure sides of the system. How does automotive ac work . How does a car’s air conditioning work? Please read the detailed topic, how automotive air conditioners work for a simple explanation. The automatic climate control system is the most advanced of all the air conditioning systems in cars. The orifice tube and accumulator system come with the orifice tube before the evaporator and accumulator before the compressor. This system is controlled by a main computer which sits in the dash and also houses the controls for the mode and temperature settings. Some engines use a dedicated drive belt to drive the ac compressor, while others use a drive belt that d...