An AC unit not cooling while the blower still hums usually points to choked airflow, an outdoor unit that cannot shed heat, or low refrigerant. When warm air comes from registers in your Greenville home, the indoor fan is moving room air without cooling it. Compare with our air conditioner not cooling checklist.
Running without cooling overheats the compressor, freezes the coil, and spikes bills. Turn the thermostat to Off if vents blow warm, then check filter, breakers, and outdoor clearance. If ice or hissing appears, you likely need AC repair in Greenville, SC – never open sealed refrigerant lines yourself.
Why is my AC not blowing cold air but running?
Because the indoor handler circulates air while the outdoor condenser is off on a tripped breaker, or refrigerant is low. Both units running but warm often means dirty coils or a failing compressor.
When to call for central AC service in Greenville
You can change filters, clear debris, and reset a tripped breaker once. Call our NATE-certified team for repeated trips, frost after thaw, humming without fan spin, or continuous run with room-temp air.
Live in Greenville County? Our local techs provide same-day diagnostics across Greenville, Greer, and Taylors with free estimates.