I know, I know—maintenance sounds boring. But imagine trying to breathe through a straw that’s full of dust and dead leaves. That’s what your AC is doing if your cabin air filter is clogged. It chokes the airflow, and weak airflow means warm air.
Replacing this filter costs about fifteen bucks and takes roughly ten minutes. It’s the cheapest “upgrade” you’ll ever do. Do it. Your lungs and your sweat glands will throw a party.