Whole-Home Generator Maintenance Checklist for Kentucky Homeowners
Annual generator maintenance tasks — oil, battery, air filter, exercise schedule, and when to call for professional service in Lexington.
A standby generator only has value if it starts when the power goes out. The most common reason generators fail during actual outages is deferred maintenance — a dead battery, stale oil, a clogged air filter, or a transfer switch that has not been tested. This checklist covers what homeowners can monitor and what requires professional service.
What homeowners can check
Monthly visual checks:
- Oil level — check the dipstick and top off if needed
- Enclosure — clear leaves, debris, and snow from around the unit
- Exercise cycle — verify the generator runs its weekly exercise automatically
- Warning lights — check the control panel for fault codes or service indicators
- Coolant level (liquid-cooled units) — verify it is in the normal range
What a professional service covers
Annual generator maintenance by a licensed technician includes:
- Oil and oil filter change
- Air filter replacement
- Spark plug inspection and replacement
- Battery load test and replacement if needed
- Transfer switch exercise and contact inspection
- Full-load test to verify rated output
- Coolant system check (liquid-cooled units)
When to schedule
Schedule annual maintenance in late summer or early fall — before Kentucky's ice storm season. Contact us or call 859.457.0426.
Frequently Asked Questions
- How often should a whole-home generator be serviced?
- A standby generator should be professionally serviced at least once a year. Generators that run frequently during outages or exercise weekly should be serviced every 200 running hours or annually, whichever comes first.
- Can I do generator maintenance myself?
- Homeowners can check oil levels, inspect for visible leaks, clear debris from the enclosure, and verify the weekly exercise cycle is running. Oil changes, battery replacement, load testing, and transfer switch inspection should be done by a licensed technician.
- What happens if I skip generator maintenance?
- An unmaintained generator may fail to start when you need it most. Stale oil, a dead battery, corroded connections, and clogged air filters are the most common reasons standby generators fail during actual outages.
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