An AC that runs but isn’t blowing cold air usually points to airflow restrictions, incorrect settings, or a refrigeration issue inside the system. The most common root cause is a dirty filter or blocked coil that prevents heat from leaving the air stream. A system can hum along and still warm your house if the indoor coil is iced over or the outdoor unit can’t shed heat; techs call this “airflow-starved cooling,” and it’s fixable once the restriction is cleared. If the outdoor fan isn’t spinning or you see frost on the lines, shut it down to protect the compressor. Our team regularly resolves these scenarios for homeowners in the West Lake Hills area. Ask about our current Free Service Call with Repair promotion when you schedule.
Before you book, check these quick items:
- Thermostat set to Cool, Fan on Auto, and target temperature below room temp
- Clean or replace the air filter
- Make sure the outdoor unit has power and clear airflow
- Look for ice on refrigerant lines or the indoor coil
Turn the system off at the thermostat if you find ice or no outdoor fan movement, then schedule professional diagnostics.
Updated: 2026-04-05
Need help in West Lake Hills, TX? Call (512) 588-5937 or book online.