What should I do if my AC is blowing warm air intermittently?

If your AC blows warm air intermittently, start with simple checks. Many problems are airflow, settings, or icing issues.

Quick checks:

• Set thermostat to Cool and Auto. Lower the setpoint 3–5°F.
• Replace a dirty air filter.
• Open all supply and return vents.
• Make sure the outdoor unit runs and is clear of debris.
• If you see ice on lines or coil, turn the system off and call for service.
• Reset a tripped breaker once only.

We offer same-day AC repair in Roanoke and can fix most issues on the first visit with fully stocked trucks. We provide upfront, fixed pricing. Service Partner Plan members get priority scheduling and a 15% discount. <br/> <br/> Updated: 2025-12-21 <br/> <br/> Need help in Christiansburg, VA? Call 5406851594 or book online.