If your AC blows warm air on and off, check simple causes first, then schedule a diagnostic. In Roanoke and Salem, this often comes down to airflow or control settings.
- Set thermostat to Cool and 3–5°F below room temp; replace batteries if needed.
- Replace a dirty filter and open all supply/return vents.
- Clear debris around the outdoor unit; check the condensate drain for clogs.
- Verify the breaker and outdoor disconnect are on. If it persists, a technician can assess refrigerant charge, capacitors, and thermostat performance.
Updated: 2025-12-24
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