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.
- DuroStar DS10000E
- Genmax GM5500i
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 | DuroStar DS10000E | Genmax GM5500i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 8000 W | 5000 W |
| Starting watts | Winner: Winner: 10000 W | 5500 W |
| Noise (lower limit) | 72 dB | Winner: Winner: 62 dB |
| Weight | 218 lbs | Winner: Winner: 116.6 lbs |
| Run time @50% load | Winner: Winner: 10 h | 8.5 h |
| Run time @25% load | 22 h | 13 h |
| Fuel tank | 8.3 gal | 3.5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 29 x 30 x 26 | 21.1 x 18.5 x 24 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | Yes | Yes |
| Covered outlets | No | Yes |
| Automatic Voltage Regulation | Yes | No |
| THD | Not available | ≤3% % |
| Engine | ||
| Engine | 439 cc OHV 4-stroke, cast iron sleeve | 312 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8000 W | 5000 W |
| Starting watts | 10000 W | 5500 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 h | 8.5 h |
| Run time @25% load | 22 h | 13 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | true |
| UPC | 811640013578 | 768494055455 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8000 | 5000 |
| Starting Watts (Gasoline) | 10000 | 5500 |
| Runtime @ 50% Load (Gasoline) | 10 | 8.5 |
| Runtime @ 25% Load (Gasoline) | 22 | 13 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Dinking OHV 4-stroke |
| Engine Displacement | 439 | 312 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | 10W-30 | SAE 10W/30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 22 | 13 |
| Runtime @ 50% Load (Gasoline) | 10 | 8.5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Not available | Funnel, tool kit, and battery |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The DuroStar DS10000E is an 8,000-watt gasoline generator built for users who need sustained power across multiple simultaneous loads. With 10,000 peak watts and an 8.3-gallon fuel tank, this unit can run a central air conditioning system, refrigerator, and several power tools at the same time, making it suitable for whole-home backup during outages or powering an active job site. The 439 cc OHV engine with cast iron sleeve delivers the raw output needed for construction equipment and heavy appliances without inverter complexity.
At 218 pounds with wheels included, this is a stationary power solution that moves when needed but stays put during operation. The three-year warranty and EPA/CARB compliance signal DuroStar's commitment to durability and emissions standards across all 50 states. | The Genmax GM5500i is a 5,000-watt gasoline inverter generator built around a 312cc OHV engine. It delivers enough continuous power for multiple household appliances, power tools, and sensitive electronics simultaneously. Because it uses inverter technology, the GM5500i produces power clean enough for laptops, gaming consoles, and medical devices, a trait that separates it from conventional open-frame generators at similar wattage levels. |
- Most PowerfulDuroStar DS10000E8000W running
- QuietestGenmax GM5500i62 dB
- Longest RuntimeDuroStar DS10000E10h at 50% load
Where to buy
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DuroStar DS10000E
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Genmax GM5500i
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