Why Is My AC Running But Not Blowing Cold Air?

If your AC runs but isn’t blowing cold air, likely causes include a clogged filter, frozen coils, low refrigerant, thermostat errors, or an electrical/blower issue. We provide full diagnostics and repairs in the Glendale Heights area with upfront pricing before work begins and 24/7 emergency response.

Quick checks:

• Set thermostat to Cool and 3°F below room temp.
• Replace or clean the filter.
• Check the breaker and air handler switch.
• Look for ice on refrigerant lines; turn system off if iced.
• Open supply and return vents.

Updated: 2025-12-24

Need help in St. Charles, IL? Call (331) 294-8710 or book online.

"He diagnosed the problem quickly and explained everything in simple terms." — Bradley W.