THERE IS ONLY FOUR SYSTEMS AT THIS HOME 11yo Heat Pump for right side of main house: S/N 8632W241305298 M/N UPQL-049JEZ 11yo Airhandler for right side of main house: S/N W421306949 M/N RHLL-HM4821JA 2yo Heat Pump for left side of main house: S/N 1923L79438 M/N 4HP17L36P-51A 2yo Airhandler for left side of main house: S/N 1523E51486 M/N BCE5C36MA4X-50 10yo Heat Pump mini split for guest house: INDOOR; S/N 3006296T M/N MSZ-GE18NA-8 OUTDOOR; S/N 4001268T M/N MUZ-GE18NA-1 10yo Heat Pump for barn: S/N W191407429 M/N 14PJM36A01 12 yo Airhandler for barn: S/N W401211672 M/N RHLL-HM3617JA Tech Cody arrived to customer's home and met the homeowner. I started with the unit for the right side of the house. INDOORS:The system had a 17 degree temperature split, the filter was replaced, drain line clear with float switch installed, the blower was clean, the blower motor was in good condition, heat strips functioned within range, and the coil was clean. OUTDOORS: I washed and waxed the unit bef