Performed yearly maintenance and safety checks on multiple air conditioning systems. Notes are as follows. All units are running with 20 degree delta t. Replaced all 20251 filters. Cleaned all condenser coils. Unit a (right hand furnace.) voltage absorption system rated 5 reading 5. No pitting/burning. 43.5 inrush start up amps. Unit b (left hand furnace). Voltage absorption system rated 5 reading 4.9. No indication of pitting/burning. 63 inrush amps. Unit c. (Lone furnace). Voltage absorption system rated 5 reading 5. No indication of any pitting/burning. 42 inrush amps. Informed customer all units could have surge protection and hard start kit installed. Customer is not interested at this time.