The air conditioning pressure line in your car plays a crucial role in the cooling process. The air conditioning system contains refrigerant, a gas that's always under pressure. By condensing this gas, it cools down, which allows your car to blow cold air. If the pressure line leaks, the system can no longer maintain pressure. The refrigerant escapes, and the air conditioning stops cooling. Moreover, the refrigerant attracts moisture. If you switch on the air conditioning when it contains too much water, it can damage the condenser or compressor.
How do I know if my pressure line is leaking?
There are several ways to check if there's a leak in the pressure line:
- Visual inspection: check the pressure line for leaks around the connections, joints, and along the length of the pipe.
- Use leak detection fluid: there are special leak detection fluids that you add to the system. These often contain a dye. You add the fluid to the air conditioning system and switch on the air conditioning. If there's a leak, you'll see the fluid coming out. Small leaks can be solved with special sealants that you inject into the system.
- Pressure test at the garage: During a pressure test, the air conditioning system is connected to a compressor and pressurised. If the compressor cannot maintain the pressure, this indicates a leak. A detection fluid is often used to pinpoint the exact location.
Buying a pressure line
If your pressure line is leaking, you can easily order a new one. The fit of the line is very important. You can find the correct line for your car. The air conditioning system is under pressure and should only be serviced by a mechanic with the correct materials and knowledge. You can keep costs down by supplying the correct part yourself and thus save on material costs.
Besides pressure lines, you can find many other parts for your air conditioning system.