Why is my 1993 Audi 80 blowing hot air even when the AC is on?

I recently purchased a used 1993 Audi 80 and noticed that the air conditioning is not working properly. Even when I turn on the AC, it only blows hot air. What could be causing this issue and how can I fix it?

It is likely that there is an issue with the AC compressor in your car. It may need to be replaced or serviced by a professional mechanic.

Make sure that the refrigerant levels in your car are at the correct level. If they are too low, it can cause the AC to blow hot air instead of cold.

Check the AC condenser in your car and make sure it is not clogged with dirt or debris. This can restrict air flow and prevent the AC from working properly.