Performed cooling maintenance on three systems. Checked electrical, mechanical, and performance of the systems. Cleared and treated all drain lines and washed all condenser coils. I replaced a capacitor on Rheem system that Garner installed last summer at no charge to the customer. I also recommended to the customer that we add a safety float switch to the downstairs Carrier furnace system. After adding the float switch, I cycled the thermostat, and everything is on and running at this time. I did leave the attic access ladder down because the customer wanted to replace the pull string before it snapped.