An air conditioner that runs but isn’t cooling usually has an airflow blockage, a refrigerant leak, or a control or compressor issue that prevents heat removal. The most common cause is restricted airflow from a dirty filter or a clogged indoor or outdoor coil. Other frequent problems include low refrigerant, electrical faults, and outdoor fan failures. We handle these issues for homeowners throughout the Plainfield area and use quick, accurate diagnostics to find the root cause. Our certified technicians arrive in fully stocked trucks, so many AC repairs finish in a single visit. If performance keeps dropping after resets and cleanings, repair is typically the next step; when a major component fails or leaks recur, replacement may be the smarter long-term choice.
Before you call, check these quick items:
- Replace a dirty filter and open all supply/return vents.
- Set the thermostat to Cool, Fan Auto, and a setpoint 3–5°F below room temp.
- Clear debris from the outdoor unit; with power off, gently rinse the coil from the outside.
- Look for ice on refrigerant lines or hear hissing/bubbling, then leave the system off.
If coils are iced or the outdoor unit isn’t blowing warm exhaust air, turn the system off to prevent damage and schedule service.
Updated: 2026-05-02
Need help in Plainfield, IN? Call 317-830-5862 or book online.