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 #8150 GP5500E
- Westinghouse WGen3600v
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 #8150 GP5500E | Westinghouse WGen3600v |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | Yes |
| Running watts | Winner: Winner: 5500 W | 3600 W |
| Starting watts | Winner: Winner: 6875 W | 4650 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 68 dB |
| Weight | 163 lbs | Winner: Winner: 99.5 lbs |
| Run time @50% load | Winner: Winner: 10.5 h | Winner: Winner: 10.5 h |
| Run time @25% load | 13.4 h | 14 h |
| Fuel tank | 5.4 gal | 4 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30 x 27 x 25 | 23.3 x 17.5 x 18.7 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <23% % |
| Engine | ||
| Engine | Generac OHV 4-stroke | 212 cc Westinghouse OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil |
| Warranty | ||
| Warranty | 2 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5500 W | 3600 W |
| Starting watts | 6875 W | 4650 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 | 10.5 h | 10.5 h |
| Run time @25% load | Not available | 14 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 | Not available |
| UPC | 696471104639 | 855464003599 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5500 | 3600 |
| Starting Watts (Gasoline) | 6875 | 4650 |
| Runtime @ 50% Load (Gasoline) | 10.5 | 10.5 |
| Runtime @ 25% Load (Gasoline) | Not available | 14 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 298 | 212 |
| Cylinder Sleeve | Not available | Cast iron sleeve |
| Engine Oil Type | 5W-30 | SAE 10W30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 14 |
| Runtime @ 50% Load (Gasoline) | 10.5 | 10.5 |
| 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 | ||
| Mobility Components | Yes | Not available |
| Starting Components | Recoil, Electric | Not available |
| Included Accessories | Oil, Funnel, Tool Kit, Battery, and Wheel Kit | Oil, funnel, and tool kit |
| Warranty & identification | ||
| Commercial Warranty | 2 | Not available |
| Part Number | 8150 | Not available |
| Additional specs | ||
| Summary | The Generac GP5500E is a 5,500 watt gasoline generator built to power whole house essentials during outages or on job sites. Its 6,875 starting watts handle motor driven appliances like well pumps and air conditioners that demand heavy inrush current. For homeowners and contractors who want reliable backup without crossing into stationary generator territory, the GP5500E delivers meaningful output with the refueling simplicity of gasoline. | The Westinghouse WGen3600v is a portable generator offering 3,600 running watts and 4,650 peak watts, powered by a 212cc 4-Stroke OHV engine. It features a 4-gallon fuel tank providing up to 14 hours of runtime, making it suitable for travel trailers and home backup power. |
- Most PowerfulGenerac #8150 GP5500E5500W running
- QuietestWestinghouse WGen3600v68 dB
- Longest RuntimeGenerac #8150 GP5500E10.5h at 50% load
Where to buy
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Generac #8150 GP5500E
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Westinghouse WGen3600v
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