Rheem straight cool condenser with propane furnace installed in 2015. All electrical connections are tight with no corrosion. PSC blower motor and capacitor are acceptable. Blower wheel is clean. Evaporator coil is clean. Gas pressure and ignition are in range and working as they should. Heat exchanger is acceptable. Refrigerant levels are in range. Compressor and condenser fan motor are working as they should. Cleaned the condenser by backflushing with water and took all leaves out of the bottom pan.