Gas furnace with straight cool condenser installed in 2013. All electrical connections are tight with no corrosion. PSC blower motor and capacitor are acceptable. Blower wheel and evaporator coil are clean. Compressor and condenser fan motor are acceptable. Refrigerant levels are in range. Outside unit was washed and waxed. Technician highly suggests adding an attic tent to keep the warm attic air from coming into the house.