Every year we hear clients ask us why they can’t get their house to cool below 78° or 80°. Variables are: a dirty condenser coil, a weak capacitor or low refrigerant. While the typical homeowner probably can’t troubleshoot a weak capacitor or low refrigerant, checking your condenser coil for accumulative dirt and debris is relatively easy. Backyard weeds or landscape over-growth can also be a huge factor.