Upon arrival performed maintenance on two air-conditioning systems. Opened up condensers and completely washed out coils. Verified refrigerant levels are in range. Primary and secondary motor controls are in range. Tested amperage is on compressor and fan motors both in range. Tested fuses. Replaced three standard filters. Recommended adding booster kit to bigger system. Ducting is fully strapped and sealed correctly. Thermostats are in working order. Systems were reset tested and fully functional and departure.