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.
- NorthStar e18000s
- Westinghouse WGen9500
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 | NorthStar e18000s | Westinghouse WGen9500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 15000 W | 9500 W |
| Starting watts | Winner: Winner: 18000 W | 12500 W |
| Noise (lower limit) | Winner: Winner: 74 dB | Winner: Winner: 74 dB |
| Weight | 423 lbs | Winner: Winner: 208 lbs |
| Run time @50% load | 7.9 h | Winner: Winner: 8 h |
| Run time @25% load | Not available | 12 h |
| Fuel tank | 12 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 43 x 36 x 35 | 27.2 x 26.5 x 26.5 |
| Electrical | ||
| Voltage (AC) | 120/240V 60 Hz | 120/240V 60 Hz |
| Voltage (DC) | Not available | 5 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <5% % | 23 % |
| Engine | ||
| Engine | 824 cc NorthStar e825 OHV 4-stroke | 457 cc Westinghouse OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Electric | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 4 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 15000 W | 9500 W |
| Starting watts | 18000 W | 12500 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 | 7.9 h | 8 h |
| Run time @25% load | Not available | 12 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 840321748058 | 853544008199 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 15000 | 9500 |
| Starting Watts (Gasoline) | 18000 | 12500 |
| Runtime @ 50% Load (Gasoline) | 7.9 | 8 |
| Runtime @ 25% Load (Gasoline) | Not available | 12 |
| AC Outlet Types | 3x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R)1x 120/240V 60A (14-60R) | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Westinghouse OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 824 | 457 |
| Cylinder Sleeve | Not available | cast iron sleeve |
| Engine Oil Type | Not available | SAE 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 12 |
| Runtime @ 50% Load (Gasoline) | 7.9 | 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 | No |
| Included equipment | ||
| Starting Components | Electric starting system | Recoil, Electric, Remote |
| Included Accessories | Funnel, battery, and wheel kit | Oil, funnel, tool kit, key fob, battery charger, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 4 | 3 |
| Additional specs | ||
| Summary | 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. | The Westinghouse WGen9500DF is a dual fuel portable generator that delivers up to 12,500 peak watts and 9,500 running watts, suitable for home backup and portable power needs. |
- Most PowerfulNorthStar e18000s15000W running
- QuietestNorthStar e18000s74 dB
- Longest RuntimeWestinghouse WGen95008h at 50% load
Where to buy
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NorthStar e18000s
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Westinghouse WGen9500
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