Browse by symptom
Start from what you see on the call, then follow the guides.
AC Not Cooling
Warm air, a low temperature split, or nothing running.
No Heat
Furnace won't light, lights and shuts off, or blows cold.
Short Cycling
Runs a few seconds or minutes, then shuts off.
Frozen Coil
Ice on the indoor coil or suction line.
Outdoor Unit Won't Start
Humming, clicking or nothing at the condenser.
Outdoor Fan Not Running
Compressor runs but the condenser fan doesn't.
Blown Fuse or Tripping Breaker
Low-voltage fuses, breakers and shorts.
Furnace Lockout
The furnace tried, failed and stopped trying.
Error Codes & Blinking Lights
Board LEDs and display codes.
High Humidity
Sticky house with the AC running.
Weak Airflow
Low CFM, high static pressure, noisy ducts.
Heat Pump Blowing Cold Air
Cool air from the vents in heat mode.
Refrigerant Leak
Losing charge, oily fittings, low pressures.