Performed a heating pm on (2) Ductless Heat Pumps. Washed the air filters. Checked the electrical connections. Turned the systems to high heat and high speed for the fan, checked the discharge temperature for proper refrigerant charge. Main house- 123-125*F, 20.6amps Rental side- 119-122*F, 13.6 amps System is operating properly. The (3) indoor units in the rental side, the blower wheels are getting very dirty and recommend cleaning the wheels and coil. The living room unit in the main house, the blower wheel is dirty and recommend cleaning.