Why is my Kia Ceed's air conditioning not working?

I recently noticed that the air conditioning in my Kia Ceed is not functioning properly. It takes a long time to cool down the car and sometimes it doesn't even turn on. What could be the issue?

First, check the air conditioning compressor to make sure it is functioning properly. It may need to be replaced if it is not working.

Another possible reason could be a leak in the air conditioning system. Have a mechanic check for any leaks and repair them if necessary.

Check the air filters for any clogs or dirt build up. This can affect the performance of the air conditioning and may need to be replaced.