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.
- DuroMax XP11500EH
- NorthStar e18000s
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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 | DuroMax XP11500EH | NorthStar e18000s |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | 9000 W | Winner: Winner: 15000 W |
| Starting watts | 11500 W | Winner: Winner: 18000 W |
| Noise (lower limit) | Winner: Winner: 74 dB | Winner: Winner: 74 dB |
| Weight | Winner: Winner: 224 lbs | 423 lbs |
| Run time @50% load | Winner: Winner: 8 h | 7.9 h |
| Run time @25% load | 20 h | Not available |
| Fuel tank | 8.3 gal | 12 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 29 x 30 x 26 | 43 x 36 x 35 |
| Electrical | ||
| Voltage (AC) | 120/240V | 120/240V 60 Hz |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | No | Yes |
| Automatic Voltage Regulation | No | Yes |
| THD | <12% % | <5% % |
| Engine | ||
| Engine | Not available | 824 cc NorthStar e825 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Not available | Electric |
| Warranty | ||
| Warranty | 3 years | 4 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | Not available | 15000 W |
| Starting watts | Not available | 18000 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 | Not available | 7.9 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | Not available | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | No | Yes |
| Neutral | Not available | true |
| UPC | Not available | 840321748058 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | Not available | 15000 |
| Starting Watts (Gasoline) | Not available | 18000 |
| Runtime @ 50% Load (Gasoline) | Not available | 7.9 |
| AC Outlet Types | Not available | 3x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R)1x 120/240V 60A (14-60R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Not available | OHV 4-stroke |
| Engine Displacement | 457 | 824 |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | Not available | 7.9 |
| Safety & compliance | ||
| Overload Protection System | Not available | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Starting Components | Not available | Electric starting system |
| Included Accessories | Not available | Funnel, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 4 |
| Additional specs | ||
| Summary | The DuroMax XP11500EH is a 9,000-watt dual-fuel generator built for homeowners, job sites, and outdoor users who need serious power without fuel limitations. Running on gasoline or propane, it delivers 11,500 peak watts to start large loads like air conditioners, compressors, and welders. The 457cc engine produces enough current to run multiple high-demand devices simultaneously, making it suitable for whole-home backup or extended job site work.
At 224 pounds with wheels included, this unit bridges the gap between portability and raw power. The 8.3-gallon tank and dual-fuel flexibility mean fewer refueling stops on gasoline, or the option to switch to propane for storage stability and cleaner operation. Three-year warranty covers manufacturing defects across the ownership period. | The NorthStar e18000s is a commercial-grade EFI portable generator with electric start, delivering 18,000 surge watts and 15,000 rated watts. It features a NorthStar e825 OHV EFI engine, Quiet Armor Technology for reduced noise, and a heavy-duty steel exoskeleton for durability. |
- Most PowerfulNorthStar e18000s15000W running
- QuietestDuroMax XP11500EH74 dB
- Longest RuntimeDuroMax XP11500EH8h at 50% load
Where to buy
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DuroMax XP11500EH
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NorthStar e18000s
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