Performed maintenance on a 2013 heat pump. Heating temperature split is 33 degrees. Indoor coils were cleaned. Filter was replaced with a customer provided merv 16. Refrigerant pressures were checked in cooling, the levels look low with a 1.9 subcool. Outdoor coils were chemically cleaned. Outdoor components were measured and recorded. Condition was discussed with homeowner. Customer stated he is going to contact a friend for better pricing. System is operational.