Some reasons why your AC may not be cooling your home include:
- There is a refrigerant leak.
- The thermostat is incorrectly set.
- The air filter is dirty.
- You have an air duct leak.
- The condenser unit is blocked.
There are many reasons why your AC fan might not be turning off, but the main reason is usually because the thermostat is set to “on” instead of “auto”. If the thermostat is set to “on,” your AC fan will run continuously. Other common problems can include a dirty air filter, low refrigerant and a faulty fan limit switch.