Last verified: October 1, 2026
Short answer: a dealer maintenance plan is usually worth it if you don’t want to do oil changes and battery checks yourself, if you want a documented service record for the warranty, and especially if you live where dealers are overwhelmed after storms and plan customers are served first. It is less valuable if you are handy, keep careful records and your dealer offers no priority service. The deciding factor is rarely the oil change itself; it is the professional inspection and the place in the queue after a hurricane.
What the manufacturer actually requires
Before judging a plan, know what the generator needs. For Generac’s air-cooled models, the owner’s manual sets out:
| Interval | Task |
|---|---|
| After the first 25 hours | Break-in oil and filter change, valve clearance check |
| Every year | Battery condition and state-of-charge check |
| Every 2 years or 200 hours | Oil and oil filter change |
| Every 4 years or 400 hours | Oil and filter, air filter, spark plugs, valve clearance |
| Cold climate or continuous hot-weather running | Oil and filter every year or 100 hours |
Most dealer plans visit once or twice a year, which is more often than this minimum. That isn’t wasted: each visit is also an inspection of parts you can’t safely check yourself. Full details in our maintenance checklist.
What a typical plan includes
- One or two scheduled visits a year.
- Oil and filter changes when due, and the longer-interval items (air filter, spark plugs) when they come up.
- Battery testing, terminal cleaning and replacement recommendations.
- Inspection of the enclosure, fuel lines, wiring and transfer switch.
- Controller firmware updates and a review of the alarm and exercise log.
- Sometimes: remote monitoring, priority emergency service, discounts on repairs or parts.
Plans differ widely. Ask for a written list of what is included, what is billed separately and the yearly price before you sign.
Plan vs do-it-yourself
| Dealer maintenance plan | Do-it-yourself | |
|---|---|---|
| Yearly cost | Fixed fee set by the dealer | Oil, filters and plugs, plus your time |
| Skills and tools | None needed | Basic mechanical skills; following the manual’s shutdown and lock-out steps |
| Electrical inspection | Done by a trained technician | Should still be left to a professional |
| Service record | Kept by the dealer | You keep receipts and a dated log |
| After a major storm | Some dealers put plan customers first | General queue |
| Remote monitoring response | Sometimes included | You watch the app yourself |
When a plan is clearly worth it
- You live in a hurricane or ice-storm area. Priority service after a storm can be the difference between days and weeks without a working generator.
- Someone in the home depends on power for health. Professional checks and fast response matter more than the cost.
- The generator is new and under warranty. A dealer record makes warranty claims simpler.
- You don’t have the time or confidence to shut down the system safely and work inside the enclosure.
- The home is a second home or rental where nobody watches the weekly exercise.
When DIY can make sense
- You are comfortable with small engines and will follow the manual exactly.
- You keep a dated log with receipts for oil and filters (Generac says homeowners may do the work themselves, though it recommends a dealer).
- You still book a professional inspection every year or two for the electrical parts and transfer switch.
How to compare plans: a simple scoring method
Ask two or three dealers for their plan details and score each one:
| Feature | Points |
|---|---|
| Written priority service after storms | 3 |
| Labor for covered work included | 2 |
| Parts and fluids included | 2 |
| Remote monitoring with dealer response | 2 |
| Two visits per year | 1 |
| Price fixed for several years | 1 |
| Can cancel without penalty | 1 |
Then divide the yearly price by the score to see which plan gives the most for the money. It’s a rough tool, but it forces you to compare like with like.
The hours trap: why one long outage changes the schedule
The maintenance intervals are “every 2 years or 200 hours” (or every year or 100 hours in cold climates and continuous hot-weather use), whichever comes first. In a normal year the weekly exercise adds only a few hours, so the calendar decides. A single long outage changes that:
| Event | Running hours | Effect on a 200-hour interval | Effect on a 100-hour interval |
|---|---|---|---|
| A year of weekly 12-minute exercises | About 10 | About 5% used | About 10% used |
| A 2-day ice storm outage | 48 | About a quarter used | About half used |
| A 5-day hurricane outage | 120 | More than half used | Interval exceeded: oil change due |
| Two 5-day outages in one season | 240 | Interval exceeded: oil change due | Well past due |
This is where a plan earns its keep, or where a DIY owner has to be disciplined. A good dealer plan should include a check of the hour meter after any long outage and an extra oil change if the hours call for it. If you maintain the generator yourself, write the hour reading in your log before and after every outage, and plan an oil change as soon as the interval is reached, even if the calendar says you have another year. Ask any dealer you are considering whether post-outage service is part of the plan or billed as an extra visit.
Worked example: scoring two plans
Here’s how the scoring method works with two made-up plans. The prices are illustrations only; use the real quotes from your local dealers.
| Feature | Plan A ($300/year) | Plan B ($400/year) |
|---|---|---|
| Written priority service after storms (3) | No | Yes |
| Labor for covered work included (2) | Yes | Yes |
| Parts and fluids included (2) | Oil only, so no points | Yes |
| Remote monitoring with dealer response (2) | No | Yes |
| Two visits per year (1) | No | Yes |
| Price fixed for several years (1) | Yes | No |
| Can cancel without penalty (1) | Yes | Yes |
| Score | 4 | 11 |
| Price per point | $75 | About $36 |
Plan A looks cheaper, but Plan B delivers far more per dollar, and its most valuable feature, priority service after storms, is the one that matters most when you actually need the generator. If you live somewhere with few major storms, you might give that line fewer points; adjust the weights to your situation, but keep them the same for every plan you compare.
Questions to ask before signing
- How many visits per year, and what exactly happens at each one?
- Are oil, filters, spark plugs and the battery included, or billed separately?
- Is priority service after storms written into the agreement?
- Does the plan include remote monitoring, and who responds to alerts?
- Will you follow the manufacturer’s schedule and record each service?
- Can I cancel, and is the price fixed for more than one year?
Red flags
- A plan that only covers an annual “visual inspection” with everything else extra.
- No written list of tasks.
- Pressure to sign a multi-year plan on installation day before you’ve seen how the dealer performs.
Frequently asked questions
Does a maintenance plan replace the warranty?
No. The warranty covers defects; the plan covers routine service. A good plan helps you meet the maintenance conditions of the warranty.
Can I buy a plan later?
Usually yes. Many owners start with a plan during the warranty period and decide later whether to continue.
What if the dealer misses a scheduled visit?
Track the dates yourself. If an oil change becomes overdue, especially after a long outage, call the dealer; the schedule is based on hours as well as time. See Generator Oil Change.
Bottom line
For most owners who want the generator to simply work during storms, a fairly priced plan from a responsive local dealer is good value, mainly for priority service and the professional eye on electrical parts. If you are handy, DIY oil changes plus a professional inspection every year or two is a sensible middle ground.