Trane heat pump with air handler installed in 2020. No drain. Protection is present. Highly suggest adding a drain switch and rebuilding the secondary drain to include a p trap. Ecm blower motor is acceptable. Blower wheel is clean. Evaporator coil has some slight buildup starting to form. Compressor and condenser fan motor are acceptable. Refrigerant levels are in range. Outdoor unit was washed and waxed. Customer declined repairs at this time.