What is the construction and purpose of air conditioning and heating systems?

Air conditioning and heating systems are systems responsible for regulating temperature, humidity, and air circulation in the vehicle cabin. They consist of cooling and heating parts, and their elements are located both in the engine compartment and under the dashboard. A typical set includes, among others, a compressor, condenser, evaporator, heater core, blower, and control modules.

What are air conditioning and heating systems used for?

Air conditioning and heating systems are used to maintain appropriate conditions inside the car throughout the year. They are responsible for cooling in summer, heating in winter, and dehumidifying the air when defrosting windows. Their efficiency also affects driver comfort, visibility, and the correct operation of automatic airflow control.

What is the construction and function of the blower module?

The blower module is a set of ducts, flaps, actuators, and housings through which air enters the cabin. It is used to direct the stream to the windshield, feet, or the central zone and to mix warm and cool air. Depending on the version, it works with actuator motors, temperature sensors, and the control panel.

How to select a part for a specific car?

When selecting, it is best to compare the OEM number, engine version, A/C type, and the layout of mounts and connectors. In many cases, the pre-facelift or post-facelift version, the type of control panel, and the presence of additional sensors also matter. A safe solution is to verify the part by VIN or by the number of the removed element.

What symptoms indicate a problem with the air conditioning or heating system?

Typical symptoms include poor cooling, lack of heating, fogging windows, uneven blower operation, and unusual noises after turning on the air conditioning. In practice, the cause may be a leak in the lines, a worn compressor, a damaged control panel, or a faulty flap motor. It is also worth checking the cabin filter and the patency of the condensate drain.

What to pay attention to before installing a used HVAC component?

Before installation, it is worth comparing the condition of the housing, the completeness of ports, mounts, and electrical plugs, and the compliance of catalog numbers. For parts such as a compressor, evaporator, or heater core, it is also important to check for leaks and signs of previous repairs. A well-chosen element reduces the risk of re-removal and facilitates proper fitting with the rest of the system.

Air conditioning and heating installations

At Global Parts, we offer a wide selection of original used car parts, including air conditioning and heating parts for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our air conditioning and heating parts undergoes quality control to ensure you receive a top-quality product.

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Audi Q3 8U A/C Air Condition Climate Control Heater Panel Unit 8U0820043C

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Audi A4 B7 Heater Climate Control A/C Air Conditioning Unit Panel 8E0820043

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Audi Q7 4L 3.0 TDI A/C Air Condition Compressor Pump 7L6820803Q

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Audi Q3 F3 Air Con A/C Air Conditioning Pipe Refrigerant Hose Line 5QF816741B

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Audi A4 B7 Heater Climate Control A/C Air Conditioning Unit Panel 8E0820043AJ

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Audi Q7 4L Air Conditioning Pipe Refrigerant Hose Line Pipe A/C 7L6820744BQ

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Audi A3 8V A/C Air Condition Pump Compressor DENSO 5Q0820803

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Audi A4 B7 Heater Climate Control A/C Air Conditioning Unit Panel 8E0820043BJ

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Audi Q7 4L Interior A/C Air Condition Matrix Evaporator 7L0820105A

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Audi Q7 4L Dashboard Climate Control Panel Heated Seat Switch 4L0820043AB

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Audi A5 8T 3.0 TDI CCWA Diesel Fuel Line Temperature Sensor Pipe Hose 059130299F

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Audi A4 B8 Air Conditioning Pipe Refrigerant Hose Line Pipe A/C 8K0260701

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Audi S4 B6 B7 4.2 V8 Air Con Conditioning Compressor A/C 4F0260805AD

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Volkswagen Audi Seat Skoda Air Conditioning Pipe A/C Hose Line 5Q0820741B

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Audi S4 B6 B7 4.2 V8 Air Conditioning Compressor A/C Air Con 4F0260805AD

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Volkswagen Audi Seat Skoda Air Conditioning Pipe A/C Hose Line 5Q0820743G

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Audi Q7 4L 3.0 TDI Air Conditioning Hose A/C Pipe Line 7L6820744BD

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Audi A8 D4 Air Conditioning Compressor A/C Coolant Pump 3.0 TDI 4H0260805E

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Audi A5 8T Coolant Air Conditioning Pipe A/C Cooling Hose Line Tube 8K0819377E

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Audi A6 C6 Air Conditioning A/C Heater Evaporator Unit 4F0820103

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Audi A3 8V A/C Air Conditioning Control Panel Heater Climate Switch 8V0820043C

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Audi S4 B8 S5 8T Air Conditioning A/C Compressor Pump Air Con Unit 8T0260805G

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Audi A3 8P Heater Climate Control A/C Unit Switch Panel 8P0820043H

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Audi TT 8N Air Conditioning Heater Climate Control A/C Unit Panel 8N0820043A

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Audi Q7 4L Rear Air Conditioning Heater Panel Control Unit 4L0919158C

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Audi A3 8V Air Conditioning Panel Heater Climate Control Unit 8V0820047D

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Air Conditioning Compressor Audi A3 8P VW Touran 1T A/C Pump 1K0820808B

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Audi A6 C6 4F Sun Solar Light Sensor Control Unit 4F0907539B

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Audi A4 B8 2.0 TFSI CDNC A/C Air Conditioning Compressor Pipe Hose 8T0260707B

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Audi A7 4G8 3.0 TDI CDUC A/C Air Condition Hose Line Tube Pipe 4G0260701L

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