Generac
Generac 8250 GP2500i 2500-Watt Gas Powered Portable Inverter Generator with COsense
Best for: AC power where no outlet exists — camp sites, tailgates, and outage backup (never run one indoors).
Tip: add it to your Amazon cart while you decide — it stays saved there, with no obligation to buy.
Score breakdown
Where the 5.8 comes from
Each bar is this model's min-max normalized position across the 12 inverter generators we track. Missing specs are excluded and the remaining weights rescaled — never treated as zero.
Official spec sheet
Every number, cited
| Brand | Generac |
|---|---|
| Rated output | 2,200 W |
| Surge output | 2,500 W |
| Engine | 98 cc |
| Fuel type | gasoline |
| Runtime | 8 h @ 25% load; 4.5 h @ 50% load |
| Noise level | — |
| Weight | 48 lbs |
| Parallel capable | yes |
| Outlets | 1x 120V 20A 5-20R duplex; 1x 12V DC; 1x 5V USB |
| CO safety shutoff | yes |
| CARB compliant | yes |
| Spec source | View spec source ↗ |
Strengths in the data
- Top-4 rated output in the category
- Top-4 CO safety shutoff in the category
Flaws but not dealbreakers
- No bottom-4 finish in any scored metric
Both lists are derived mechanically: a metric makes the list when this model finishes in the top or bottom four of the 12 inverter generators we track.
Who shouldn't get it: Skip it if silent operation matters more than output — every gas inverter generator hums; only battery stations are silent.
Tip: add it to your Amazon cart while you decide — it stays saved there, with no obligation to buy.
All data above is publicly available spec data from the official brand page linked in the table — we don't lab-test. Prices and availability are shown on Amazon. Compare with all 12 inverter generators ↗