Why Does My Car AC Blow Hot Air? There can be several reasons for this to find the root cause special equipment needs to be used to diagnose the AC System. We will go over several reasons Why Does My Car AC Blow Hot Air. One of the simplest reasons is a plugged Cabin Air Filter that needs to be changed. This can also contribute to Why Does My Car AC Smell Condition. A Plugged Cabin Air Filter cuts down on the amount of airflow that comes out of the vents making the inside of the car feel warmer. One of the most common reasons you may experience Why Does My Car AC Blow Hot Air is a leak in the AC System. There are special tools that you need to use to find the leak. It is not a good practice to use sealer that are made to go in your AC System this can plug up the small passages in the AC Evaporator and AC Condenser leading to more problems down the road. Another common reason that you may experience Why Does My Car AC Blow Hot Air is a Failing AC Compressor. Late model cars use a flow control valve in the compressor to help control the amount of pressure and cooling work the AC Compressor does to cool the car. The compressor clutch will engage, and everything will look like its working but the AC pressure inside the system will not be high enough to cool properly. You will need an OE level scan tool and wiring diagrams to diagnose the problem properly. If you are having a Why Does My Car AC Blow Hot Air give us a call and we would be happy to get your car AC System back in top working performance so you can enjoy your family vacation trip or your drive to work.