Preformed 2 system heating maintenance on a 2020 heat pump and 2022 heat pump. I tested all electrical components on the inside units. All tested within manufacturer specifications. I changed both filters, 20x20x1 and 20x25x1. I checked for cleanliness and both systems don’t have any build up on the blower wheels or evaporator coils. I proceeded outside to test all electrical components, start and run amps of the compressor. All tested within manufacturer specifications. I did notice both units did not have any type of surge protection installed on them. I left estimates for the surge protection to be installed. Both units were cooling upon departure
