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

If your AC blows warm air off and on, start with simple checks and then schedule a professional diagnostic. Intermittent warmth often traces to airflow, thermostat settings, or refrigerant issues.

Quick checks:

• Set thermostat to Cool and Fan to Auto.
• Replace a dirty filter.
• Make sure supply and return vents are open.
• Check the breaker and outdoor disconnect.
• Ensure the outdoor unit is running and coils are clear.
• If you see ice on lines or coil, turn system off and call.

Summers offers 24/7 emergency help and free estimates. Our Precision AC Tune-Up includes a No Breakdown Guarantee. We serve Marion, Gas City, and Hartford City.

Updated: 2025-12-21 00:00:00

Need help in Marion, IN? Call (765) 613-0053 or book online.