I was called to a home to check on a unit that was not cooling. I arrived and found the air handler was not running. I checked the air filter and found it was very dirty. I cleaned the filter and the unit started running. I also found that the evaporator coil was blocked up. I removed the trash from the coil and the unit started cooling again. I checked the pressures and the saturation temperature and found them to be good. I also checked the refrigerant levels and found them to be good. I did not find any other issues with the unit.