Are Your HVAC Skills Pro-level?Share:FacebookPinterestTwitterMailIf the AC blows warm air, what's a common cause?24%Next Correct Incorrect Dirty air filters restrict airflow, causing warm AC output. Clogged filters force the system to work harder, raising energy bills & wear. If the AC blows warm air, what's a common cause? Dirty air filter Low fan speed Closed supply vents Broken thermostat 24%
