About 2 years ago I refilled my 2003 A4 FWD 1.8T with freon as the A/C started blowing warm air and it was worked great after until this past week. I recently moved to Las Vegas so it is very hot, already 115 degrees almost everyday.

Now my car blows hot air so I was thinking I just have a small leak and need to get my freon refilled however I noticed my side drivers vent is blowing cold air but the two big vents in the middle blow warm air same temperature as outside pretty much.

This has me wondering if there is a flapper that is stuck or maybe it is just low on freon so its not getting to all of the vents but I would think they would atleast all be the same temperature. What do you guys think? I was going to take it to a shop tomorrow but since I only just moved here not to long ago I dont know any good mechanics and dont want one trying to rip me off.