We performed comprehensive preventative maintenance on a Generac air-cooled standby generator for a homeowner in Spring. Our team inspected the exterior electrical and gas connections, checked the 200-amp transfer switch, and verified the system's integration with the home’s main service panel. The service included replacing the engine air filter, oil filter, and spark plugs to ensure optimal engine performance. We also tested the battery health and used a multimeter to verify voltage and frequency outputs before resetting the Evolution 2.0 controller to its ready-to-run status. This maintenance ensures the backup power system remains reliable and ready for the next utility outage.