Why Is My AC Blowing Warm Air?

Intro

If your AC is blowing warm air, your system is running but not cooling. This is a common problem in Tennessee homes during summer.

What This Problem Means

Warm air means heat is not being removed from your home. The AC may still run, but cooling is not happening.

Homeowners may call this:

  • AC blowing hot air

  • Warm air from vents

  • AC running but not cold

Common Causes

  • Low refrigerant

  • Dirty air filter

  • Thermostat set wrong

  • Frozen coil

  • Failed compressor or fan

Safe Things a Homeowner Can Check

  • Check thermostat is set to cool

  • Replace dirty air filter

  • Make sure outdoor unit is clear of debris

Do not open the system or touch wiring.

When to Call a Professional

If warm air continues, a professional should inspect the system. Refrigerant handling requires special licenses in Tennessee.

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