Home Generator (Standby): lifespan, maintenance and replacement

Typical lifespan: 15–30 years (about 20 years).

Maintenance schedule

• Run weekly exercise cycle (most auto-run) — Weekly
• Check oil level — Monthly
• Change oil and oil filter — Every 100–200 hours or annually
• Replace air filter — Annually
• Replace spark plugs — Every 2 years
• Professional load-bank test — Every 3 years
• Inspect fuel lines and connections — Annually

Signs it needs replacing

• Fails to start during power outage
• Excessive oil consumption
• Visible coolant or oil leaks
• Frequent fault codes
• Rust on enclosure compromising internals
• Parts no longer available for model

Tips

Never skip the weekly exercise cycle — it keeps the engine lubricated and battery charged.