How can I fix the faulty air conditioning in my Audi A2?

I've noticed that my Audi A2's air conditioning has been blowing out hot air instead of cool. Any ideas on how I can troubleshoot and fix this issue?

First, check the air conditioning compressor for any leaks. If there are no leaks, it could be a faulty compressor or a clogged evaporator. You may need to bring it to a mechanic for a diagnostic test and possible replacements.

Have you recently replaced the cabin air filter? A clogged filter can cause the air conditioning to not blow out cool air. Try replacing it and see if that solves the issue.