I was called to a home to check on a system that was not cooling. Upon arrival, I found that the system's capacitor had gone bad. I replaced the capacitor and verified that the system was safe to operate. I checked the amp draws to ensure that no motors were overheating. I also checked the heat exchanger and made sure that the temperature split was correct. Finally, I checked the air filter to ensure that it was clean and in good condition. The client was very friendly and satisfied with the service.