Super tune up performed this evening in a comfort maker LP furnace with a straight cool condenser installed in 2014. All electrical connections are tight with no corrosion. Gas burners. Igniter. Gas valve and heat exchanger are acceptable. Blower wheel and evaporator coil have some slight build up starting to form. Compressor and condenser fan motor are acceptable. Refrigerant levels are in range. Outdoor unit was very dirty boutdoor unit was washed and waxed as well as all of the leaves were vacuumed from the bottom pan. Customer changeanhis own filters.