A Generac standby generator is one of the most reliable pieces of equipment you can own — but only if it's maintained. Generators that sit unserviced for 2+ years are the ones that fail to start during Hurricane season. This guide covers everything that should happen during a professional annual service visit, plus what you can check yourself between visits.
Generac's requirement: Annual service is specified by Generac for all home standby models. Most extended warranty plans also require proof of annual service. Skipping service can void your warranty and — more importantly — leave you without power when you need it most.
What Generac's Automatic Weekly Test Does (and Doesn't) Cover
Your Generac generator runs an automatic self-test every week (usually Tuesday mornings by default). This test exercises the engine, charges the battery, and confirms basic operation. What it does not do:
- Change the oil or check oil quality
- Replace filters or spark plugs
- Perform a full load test under your home's power draw
- Check or replace the battery
- Inspect electrical connections for corrosion
These require a hands-on service visit from a trained technician.
Complete Annual Maintenance Checklist
| Service Item | Why It Matters | Who Does It |
|---|---|---|
| Engine oil change | Oil breaks down over time and usage. Dirty oil causes premature engine wear. | Pro |
| Oil filter replacement | A clogged filter reduces lubrication flow to the engine. | Pro |
| Air filter inspection / replacement | Florida's heat and humidity clog air filters faster. A dirty filter starves the engine of air. | Pro |
| Spark plug inspection | Worn plugs cause hard starts and reduced power output. Replace if fouled or gapped incorrectly. | Pro |
| Battery voltage & load test | The #1 cause of generator failure is a dead starting battery. Most last 2–3 years. | Pro |
| Battery terminal cleaning | Corrosion on terminals reduces electrical conductivity and current delivery. | Pro |
| Coolant level (liquid-cooled models) | Low coolant leads to engine overheating during extended runs. | Pro |
| Fuel system inspection | Check gas line connections, fuel pressure, and fuel valve operation. | Pro |
| Transfer switch operation test | Verify the ATS transfers power correctly and all breakers function. | Pro |
| Full load test | Running the generator under actual load confirms it can carry your home's circuits. | Pro |
| Electrical connection inspection | Vibration and Florida humidity can loosen connections and cause corrosion. | Pro |
| Enclosure inspection | Check for pest nesting (lizards and insects love generator enclosures in Florida). | DIY / Pro |
| Mobile Link connectivity check | Confirm remote monitoring is connected and reporting correctly. | DIY / Pro |
| Controller firmware update | Generac periodically releases firmware updates that improve performance and fix bugs. | Pro |
| Written service report | Documents the service for warranty purposes and tracks trends over time. | Pro |
What You Can Check Monthly (DIY)
Between professional service visits, these are quick checks any homeowner can do:
- Check the controller display: No red fault lights or error codes
- Check Mobile Link app: Status shows "Ready"
- Walk around the unit: No debris, vegetation, or pest activity near the enclosure
- Listen during the weekly test: Generator should start smoothly, run for ~20 minutes, and shut off cleanly
- Check natural gas valve: Confirm the supply valve is fully open
Florida-Specific Maintenance Considerations
Naples and Southwest Florida present unique challenges for generator maintenance that differ from other parts of the country:
- Humidity & salt air: Accelerates corrosion on electrical connections and battery terminals — especially for coastal homes. Annual inspection catches this early.
- Wildlife: Florida lizards and insects commonly nest inside generator enclosures during non-run periods. A professional service includes a full enclosure cleanout.
- Extended run seasons: After a major storm, your generator may run for 5–10 days straight. Generac recommends an oil change after 100 hours of continuous operation — plan for a post-storm service call.
- Summer heat: Florida's ambient temperatures stress generators harder than cooler climates. Adequate airflow around the enclosure is essential.
When to Schedule Service
The best time to schedule annual maintenance in Naples is February through April — before pre-season demand drives up wait times. By May, service slots are often booked 3–4 weeks out. Don't wait until June when a storm is already in the forecast.
Schedule Your Annual Generator Tune-Up
Our maintenance plan members get priority scheduling every spring. Ask about our annual and bi-annual service plans.
Maintenance Plans from Home Works Now
We offer annual and bi-annual maintenance plans for Naples homeowners. Plan members receive:
- Priority scheduling in spring before hurricane season
- All parts and fluids included
- Discounted repair rates (10% off labor)
- Priority 24/7 emergency response during storm season
- Automatic reminders — we call you when service is due