I arrived to find the system was turned off. I turned it on and the airhandler started up. The filter was ready for replacement, I replaced it with the customers stock. The temperature was 84 in the condo. I went down to the condenser unit and found the fan was operating but the compressor was not. I tested amps and volts. They were good. The capacitor was hot to the touch. I shut down electrical circuit for the unit and tested the capacitor. It was faulty. It’s factory specs were 36/5 uf and it was at 0/4.2. I suggested the customer consider having a start assist added to the existing run capacitor to extend its life, save energy, and wear on the compressor at the start phase. I noticed there is NO SURGE PROTECTOR to keep safe from surge or strikes. I suggested the customer consider having one added. I quoted for all these upgrades and for the handling on the part today. THE CUSTOMER STATED THAT THE DOOR WAS LEFT OPEN BY A CONTRACTOR AND THE SYSTEM RAN CONTINUOUSLY UNTIL FAILURE OF