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

Intermittent warm air usually means low refrigerant, a dirty or frozen coil, electrical or sensor faults, or a thermostat problem.

• Set thermostat to Cool.
• Replace a dirty filter.
• Check breaker and outdoor unit clearance.
• If coils are iced, turn system off to defrost.
• Note noises, weak airflow, or error lights. Do not DIY refrigerant or electrical repairs; this can risk safety and void manufacturer warranties. Same-day and emergency AC repair is available in Austin and Bastrop.

Updated: 2025-12-29 00:00:00

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