Off-Season Storage & Winterizing
Last verified: September 2026
Everything you actually need to know, in plain English - no jargon, no rabbit holes. If you'd rather skip the reading and just have someone help, my number is (330) 200-8042.
Off-Season Storage & Winterizing
Putting an inverter generator away the right way is what makes it start on the first pull the next time you need it — and the number-one thing that goes wrong is fuel left to go stale. The short version: handle the fuel (run it dry, or add stabilizer), change the oil, wipe it down, and tuck it somewhere dry and safe from mice. Then wake it up in spring with fresh fuel, an oil check, and a test run. And here's the one big exception: if you might need it during winter storm season, you keep it ready, not fully put away. There's a printable, 29-page guide up top if you'd like the full walk-through.
Common Questions
1 What's the single most important thing before I store it?
Handle the fuel. Gasoline left sitting for months turns to a gummy varnish that clogs the carburetor, and that is far and away the top reason a stored generator won't start next season. Either run it dry or treat the fuel with stabilizer, and you've handled the biggest risk.
2 Should I drain the fuel or add stabilizer?
Either works well — do whichever your owner's manual prefers. Running it dry leaves nothing behind to spoil, which suits a long sleep. Fresh fuel plus stabilizer, run a few minutes to circulate it, keeps the unit closer to ready. What you never do is store it on plain, untreated gas.
3 Do I really need to change the oil before storage?
Yes, and it's worth the ten minutes. Used oil holds acids and moisture that can sit against the engine's insides all winter and cause corrosion. Fresh oil is clean and protective, so the unit wakes up healthy in the spring.
4 Where should I keep it over the winter?
Somewhere dry and sheltered — a garage, shed, or outbuilding — up off a bare concrete floor if you can, and under a breathable storage cover rather than a sealed tarp. Damp and mice are the enemies, so keep it dry and block the openings against nesting.
5 Should I winterize it if I might need it in a winter storm?
No — this is the big caveat. A fully winterized generator isn't a five-minute grab in an ice storm, and ice storms are exactly when Ohio outages hit. If there's any chance you'll want it this winter, keep it storm-ready: fueled with fresh, stabilized gas, oil good, battery charged, and run now and then so you know it starts.
6 How do I wake it up in the spring?
A short checklist: remove any pest plugs from the exhaust, look it over for nests or chewed wires, check the oil, add fresh fuel (or freshen stabilized fuel), charge the battery, then give it a test run outdoors, 20 feet from the house. Better to find a problem then than during an outage.
Want a Hand With Yours?
Picking a generator, setting it up, and learning to run it safely is one of my most-requested visits. I bring the patience and the know-how - you keep your seat. We'll match a unit to your home, set it up right, walk through starting it and staying safe from carbon monoxide, and get your internet, TV, and devices happily back on. $99 flat, and every visit is 30-day come-back-free. (330) 200-8042.
Would you rather I just do this for you?
No shame in it — plenty of folks would rather hand it off, and that's what I'm here for. I'll come to your home, set it up right, and make sure it's working before I leave. Flat $99 per visit — no jargon, no upsell, and every visit is 30-day come-back-free.
Not a hardware job? I can often fix it remotely for $49 — a secure screen-share, up to 2 hours, that you watch the whole time and can end whenever (included free for $39/mo Support Plan members, and it counts toward the $99 if it turns out I need to come out).