Performed A/C tune-up on two Carrier straight cool systems. Checked the electrical, mechanical and performance systems of the units. The drain line for the upstairs system was clogged and there was water on the secondary pan. Cleared, cleaned, flushed and treated the drain lines and cleaned the exterior of the furnace systems. Verified outdoor wiring is secure and washed both outdoor coils. I did find there is no water safety switch on the secondary drain lines of both systems in the attic. Both systems also have high static pressure. On the outdoor systems, I found both outdoor fan motors are showing signs of over heating. I spoke with the homeowner on the phone and presented repair options. Both systems are operational.