Why Is My AC Running But Not Blowing Cold Air?

Your AC can run without cooling due to low refrigerant, a dirty filter, a frozen evaporator coil, a faulty thermostat setting, or blocked airflow at the outdoor unit. Cardinal repairs refrigerant leaks, evaporator coils, air handlers, and ductless systems. We offer 24-hour emergency service in Madison, Fitchburg, and nearby.

Quick checks:

• Set thermostat to Cool and fan Auto.
• Replace a clogged filter.
• Clear debris 2–3 ft around the outdoor unit.
• Look for ice on refrigerant lines; turn system off if iced.
• Check the AC breaker.

<br/> Updated: 2025-12-23 00:00:00 <br/>

Need help in Fitchburg, WI? Call (608) 291-6473 or book online.

"Service was fast and efficient. Found and fixed clogged line and performed general maintenance on AC unit." — Anonymous