Compare Generators Side-by-Side
Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- Generac #8251 GP2500i
- NorthStar e9250s
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | Generac #8251 GP2500i | NorthStar e9250s |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | No | No |
| Running watts | 2200 W | Winner: Winner: 7250 W |
| Starting watts | 2500 W | Winner: Winner: 9250 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 74 dB |
| Weight | Winner: Winner: 48 lbs | 277 lbs |
| Run time @50% load | 4.5 h | Winner: Winner: 10.8 h |
| Run time @25% load | 8 h | Not available |
| Fuel tank | 1 gal | 8 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 19.7 x 11.4 x 17.9 | 41 x 32 x 29 |
| Electrical | ||
| Voltage (AC) | 120 | 120/240V 60 Hz |
| Voltage (DC) | 12 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <5% % |
| Engine | ||
| Engine | 98 cc OHV 4-stroke | NorthStar e420 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 4 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2200 W | 7250 W |
| Starting watts | 2500 W | 9250 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 4.5 h | 10.8 h |
| Run time @25% load | 8 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | true |
| UPC | 696471003946 | 840321737359 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2200 | 7250 |
| Starting Watts (Gasoline) | 2500 | 9250 |
| Runtime @ 50% Load (Gasoline) | 4.5 | 10.8 |
| Runtime @ 25% Load (Gasoline) | 8 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) | 3x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 98 cc OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 98 | 420 |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 8 | Not available |
| Runtime @ 50% Load (Gasoline) | 4.5 | 10.8 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil | Not available |
| Included Accessories | Oil, funnel, tool kit, and battery charging cables | Funnel, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 4 |
| Part Number | 82512 | Not available |
| Additional specs | ||
| Summary | The Generac GP2500i is a 2200-watt inverter generator built for portable backup power and recreational use. At 48 pounds, it moves easily between campsites, job sites, and emergency situations. The inverter technology means laptops, phones, and sensitive tools run safely because the power output stays stable. This unit runs on gasoline and delivers 2500 starting watts, so it can handle the initial surge when motors kick on. | The NorthStar e9250s is a commercial-grade, portable generator featuring a 420cc OHV EFI engine, delivering 9,250 surge watts and 7,250 rated watts. It boasts Quiet Armor Technology for reduced noise, an electric start with a built-in battery charger, and a multi-function LCD display for monitoring generator functions. |
- Most PowerfulNorthStar e9250s7250W running
- QuietestNorthStar e9250s74 dB
- Longest RuntimeNorthStar e9250s10.8h at 50% load
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Generac #8251 GP2500i
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NorthStar e9250s
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