Car Air Conditioning

Enhancing comfort while reducing fuel consumption

Car Air Conditioning

An air conditioner automatically controls not only the cabin temperature but also air circulation, humidity and purification. To comply with car manufacturers’ demands for more efficient, smaller and lighter air conditioners, DENSO developed a compact air conditioning unit that is 20% smaller, 12% lighter and consumes 14% less power than conventional units.

DENSO’s air-conditioners have consistently led the global market since 1990 – achieving comfortable and highly reliable air conditioning control. Drawing on over 50 years’ experience in designing, testing and manufacturing A/C components, DENSO’s development in control technology now focuses on individual passenger comfort rather than the entire cabin space.

Our car A/C range includes over 12,000 parts, all featuring protective coatings and sealants unique to DENSO that ensure the longest lifespan on the market.


Through heat exchange with air, the condenser cools the high-temperature, high-pressure gas refrigerant and condenses it into liquid refrigerant – emitting the heat absorbed by the evaporator from inside the vehicle to the outside.


The compressor compresses low-temperature, low-pressure gas refrigerant from the evaporator into high-temperature, high-pressure gas refrigerant, which is then sent to the condenser.


Integrated into the HVAC unit, the evaporator cools and dehumidifies air inside the vehicle by exchanging heat with a refrigerant.

Heater core

The heater core reheats a portion of the air cooled by the evaporator by exchanging heat with engine-cooling water. The reheated air is mixed with the remaining evaporator-cooled air and then blown into the vehicle cabin.