Vehicle compressor is the name given to compressors specially developed for automobiles. In vehicles, the air conditioning compressor is located just behind the vehicle’s radiator system. The position of the air conditioning compressor may vary in some vehicle and type models.

Vehicle air conditioning compressors, which are also launched as auto air conditioning compressors, can also be categorized as 12V and 24V. Another type of categorization is that some of the vehicle air conditioning compressors are designed as top outlet and some as rear outlet.

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Condensers are a heat exchanger. It is located at the front of the vehicle. The condenser cools and liquefies (condenses) the refrigerant (heated by the compressor) by transferring heat to the ambient air flow passing through it.

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Outside air cools as it passes through the fins of the evaporator and transfers heat to the refrigerant. Cold air is then sprayed into the cabin at temperatures between 2°C and 10°C. Air conditioning is often seen as a means of cooling the air, but one of its most important roles is to remove moisture from the air. It is important to reduce the humidity level in the cabin in cold weather.

Condensation quickly forms on the windows where there are several people in the vehicle. Evacuation of moisture from the condensed air can be accomplished effectively by the condensation process in the evaporator fins. This condensed air (water) is then collected and discharged from the rear of the vehicle.

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Filter Drier

The dryer is a part that protects all other parts of the air conditioning cycle. It is located on the high pressure side of the circuit, between the condenser outlet and the expansion valve inlet. The dryer has different roles:

Keeping moisture and contaminants out of the system (for the lifetime of the dryer)
Finalize and fix the condensation of the liquid
To accommodate changes in fluid volume
Allowing the oil to return to the compressor

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Heater Motor

The heater engine is the tool that ensures the operation of the heating system and a smooth air flow.

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Expansion Valve

The expansion valve is located downstream of the dryer: It takes the coolant in 100% liquid state after passing through the filter. The expansion valve reduces the pressure of the coolant. This drop in pressure cools the liquid and then the liquid is sprayed into the evaporator. The expansion valve is always attached to the evaporator

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Pressure Switch

The pressure sensor monitors the high pressure level of the air conditioning cycle, enabling or disabling the compressor according to the two pressure thresholds. An additional circuit secures the condensation process by forcing air through the condenser while controlling the cooling fan. The pressure sender is a safety device for the air conditioning loop. The pressure sensor is located on the high pressure side of the loop.

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The coolant is circulated throughout the A/C system. It does this through tubes and hoses, and the refrigerant is under low pressure as it moves from the evaporator to the compressor, so the hose required is a low pressure hose.

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Air Conditioner Gas

R134A gas is used in auto air conditioning systems. The amount of refrigerant gas is very important for the performance and operation of the air conditioning system. A large amount affects the performance of the air conditioner system as badly as a small amount. For this reason, it should be ensured that there is correct amount of air conditioner gas.

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Compressor Oil

A/C compressor oil is the liquid that lubricates the compressor while it is running. Special air conditioning oil should be used. PAG=Poly-Alkylene-Glucol synthetic oil is used in the use of R134a refrigerant. The air conditioner works by dissolving in the air conditioner oil. For this reason, it is necessary to look at the amount of oil while checking the air conditioner gas during air conditioner maintenance. In order to fully understand the level, it should be checked after a certain period of time after the air conditioner is turned off. Oil should be added if necessary.

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The thermostat serves to regulate the flow of liquid.
Since the engine temperature does not rise much in relatively cold weather conditions, the fluid flow is limited by the thermostat. In this case, the coolant coming out of the engine returns to the engine without the need for cooling in the radiator.

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