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Not only a developer of advanced Air Conditioning and Engine Cooling systems for leading car manufacturers, DENSO is also the world leader in A/C compressors – with a 42% OE market share.

This outstanding engineering knowledge is reflected in the quality of our A/C Compressor programme for the aftermarket – providing the international benchmark for technology and quality. Car manufacturers worldwide have come to rely on DENSO – the world’s number one in original thermal products – for efficient, reliable  Heating, Ventilation and Air Conditioning (HVAC) components.

Air Conditioning System

System Layout

Accompressor Scematic UK


The main purpose of an air conditioning system is to maintain the air in the passenger compartment at a comfortable environmental level by cooling or heating the air blown into the passenger compartment.

In addition it will reduce humidity, dust and smells in the passenger compartment. To perform these operations, the car’s air conditioning system generally consists of a heater, evaporator and a ventilation system including a blower, air ducts, and air purifier.

The main components of the refrigeration cycle:

  • Compressor driven by the car engine
  • Condenser
  • Receiver / Drier
  • Expansion Valve
  • Evaporator

The system components are connected to each other with different tubes and hoses.