Why Is My Air Conditioner Running But Not Cooling Properly?

If your AC runs but won’t cool, likely causes are a clogged filter, low refrigerant from a leak, dirty or frozen coils, duct leaks, or a failing thermostat or compressor. We offer same-day and 24/7 AC repair to diagnose and fix these issues. In Glenview and across Chicago, our NATE-certified techs service all makes and models.

• Set thermostat to Cool and lower 3–5°F.
• Replace or clean the filter.
• Clear 2–3 ft around the outdoor unit.
• If coils are iced, switch to Fan to thaw. <br/>

Updated: 2025-12-26 00:00:00 <br/> Need help in Glenview, IL? Call (224) 212-9332 or book online. "Recently, I had an issue with my AC unit, and they were able to quickly diagnose and fix the problem." — Jimmy B.