Champion 3500-Watt (100555)
The cheapest honest way to keep a fridge, furnace fan, and sump pump alive.
Specs
| Running watts | 3,500 W |
| Starting watts | 4,375 W |
| Type | Open frame |
| Fuel | Gasoline |
| Noise (mfr figure) | 68 dBA |
| Fuel tank | 3.8 gal |
| Runtime (mfr claim) | ~12 h at 50% load |
| Outlets | Two 20A 125V, TT-30R (RV) |
| Start | Recoil |
| CO safety shutoff | Varies by version — check the listing |
| Typical street price | ~$450 (fluctuates — check listing) |
Figures are the manufacturer's published specs; dashes mean the maker doesn't publish a number. Verify against the current datasheet before you buy.
What can it actually run?
Checked with the same math as our calculator: total running watts, plus the single largest motor surge on top. “Tight” means it technically fits but the load sits above 80% of rated output — fine briefly, not where you want to live.
- ✓ runs itFridge, Wi-Fi, and lights730 W running · 2,230 W peak
- ✗ too muchStorm essentials (fridge, freezer, furnace fan, sump pump)3,080 W running · 4,630 W peak
- ✗ too muchEssentials plus a 10,000 BTU window AC4,280 W running · 6,680 W peak
- ✗ too muchMost of the house (well pump, central AC, laundry)13,680 W running · 19,680 W peak
The installer's take
No inverter, no frills — a carbureted workhorse that covers the classic must-run outage load for under $500. It's 68 dBA, so it sounds like a lawn mower; nobody camps next to one on purpose. But for a few outages a year powering essentials through a cord or a small transfer switch, this class of machine is the value king. Run it dry before storage or the carb will gum up.
Pros
- Essentials-level output at a rock-bottom price
- Big 3.8 gal tank — half-day runs at 50% load
- Volt Guard surge protection built in
Cons
- Loud — conventional open-frame noise
- Power isn't clean enough for sensitive electronics without a line conditioner
- Recoil start only