Preformed cooling maintenance for 2 systems. Tested all electrical components on inside and outside units. All tested within manufacture specifications. Tested run and start amps on outside units. The down stairs unit could benefit from having a hard start kit installed to help get the amps down on units start up. The upstairs unit start and run amps are testing within manufacture specifications. Rinsed both outside units coils. Changed filters for client. Treated main drain lines on both units with total c. Units are cooling upon departure. 521 ELECTRONIC HARD START 189-227 UF 170-277V 1 HP AND UP HARD STARTS ARE USED TO GIVE COMPRESSORS A HIGHER STARTING BOOST OF CURRENT WHEN NEEDED TO START. 521 compressor saver comes with a manufacturer warranty of 2 years from date of installation.