What Should I Do If My AC Is Running But Not Cooling?

If your AC is running but not cooling, check a few basics first, then schedule diagnostics. We troubleshoot thermostat issues, airflow restrictions, refrigerant leaks, blower problems, and duct issues across Franklin, MA and nearby towns.

Quick checks:

• Set thermostat to Cool and lower the setpoint 5°F.
• Replace a dirty air filter to restore airflow.
• Clear leaves/debris from the outdoor unit.
• Look for ice on lines or unusual noises; shut system off if frozen. If it’s still warm, we offer same-day troubleshooting, upfront pricing, and repairs with a 2-year warranty (4 years for Club Members).

Updated: 2025-12-29

Need help in Franklin, MA? Call (508) 571-6488 or book online.

"G&C Plumbing & Heating technician (Casey) was prompt, very professional and was able to resolve my boiler problem quickly. I highly recommend G&C." — Casey M.