Standby generators require regular maintenance including oil and filter changes, spark plug inspection, battery testing, and automatic transfer switch verification to ensure reliable emergency operation when power fails.
The core maintenance cycle centers on annual service visits, which should be scheduled during mild weather months (typically spring or fall) before peak demand seasons. During these visits, a licensed technician performs an oil and oil filter change using the manufacturer's specified grade, which is critical because standby generators operate differently than portable units and require precise lubrication standards. The air filter is inspected and replaced if clogged, as a dirty filter reduces fuel efficiency and engine performance. Spark plugs are examined for wear and gap specifications, and battery terminals are cleaned of corrosion to maintain proper charging voltage.
Your generator's control system automatically runs self-diagnostic tests weekly, cycling the engine briefly to maintain fuel system integrity and verify operational readiness. However, these automated checks don't replace professional inspection. During maintenance visits, technicians manually verify that the automatic transfer switch (the device that detects utility power loss and signals the generator to start) operates smoothly and transfers load without delay. This component is essential; if it fails, your backup system won't activate during an outage.
For natural gas-fueled generators, additional checks are necessary. Our technicians perform leak testing on all gas connections using specialized equipment to detect even minor seepage, then verify fuel pressure meets manufacturer specifications. Propane systems require similar attention, plus inspection of the regulator and fuel line integrity.
Battery maintenance deserves particular emphasis because the battery powers the starter motor and control circuitry. We test voltage and load capacity annually, cleaning corrosion from terminals and replacing batteries when they no longer hold sufficient charge, typically every three to five years depending on climate and usage patterns.
Every service call starts with a diagnosis, then a fair, upfront price you approve before work begins. Some programs include emergency service calls if your generator fails during an outage, providing peace of mind that technical support is available when needed most.
Blackmon Plumbing, an 18-year-established, MPL-licensed provider and authorized Generac and Noritz dealer, offers comprehensive backup generator maintenance programs designed to keep your emergency power system operational year-round.