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| Specification | DuroStar DS13000X | Genmax GM15000ET |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Tri-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | Yes |
| Running watts | 10500 W | Winner: Winner: 13000 W |
| Starting watts | 13000 W | Winner: Winner: 15000 W |
| Noise (lower limit) | Winner: Winner: 74 dB | 76 dB |
| Weight | Winner: Winner: 240 lbs | 242 lbs |
| Run time @50% load | 8.5 h | Winner: Winner: 11 h |
| Run time @25% load | 17 h | Not available |
| Fuel tank | 8.3 gal | 10.5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30 x 29 x 26 | 28 x 31.6 x 28.7 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | No |
| Covered outlets | No | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 12 % | 23 % |
| Engine | ||
| Engine | 500 cc OHV 4-stroke, cast iron sleeve | 520 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 5 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 10500 W | 11000 W |
| Starting watts | 13000 W | 15000 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 | 8.5 h | 11 h |
| Run time @25% load | 17 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | Not available | 12000 W |
| Starting watts | Not available | 12000 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 | Not available |
| Run time @25% load | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | Not available | 13000 W |
| Starting watts | Not available | 13000 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 | Not available |
| Run time @25% load | Not available | Not available |
| 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 | Floating |
| UPC | 811640016739 | 760790901382 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 10500 | 11000 |
| Running Watts (Propane) | Not available | 13000 |
| Running Watts (Natural Gas) | Not available | 12000 |
| Starting Watts (Gasoline) | 13000 | 15000 |
| Starting Watts (Propane) | Not available | 13000 |
| Starting Watts (Natural Gas) | Not available | 12000 |
| Runtime @ 50% Load (Gasoline) | 8.5 | 11 |
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | AC outlets3x Duplex 120V 20A (5-20R)1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 500 cc OHV 4-stroke, cast iron sleeve | OHV 4-stroke |
| Engine Displacement | 500 | 520 |
| Engine Oil Type | 10W-30 | SAE 10W/30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| Runtime @ 50% Load (Gasoline) | 8.5 | 11 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Not available | Recoil starter; Electric starter; Remote starter |
| Included Accessories | Funnel, tool kit, battery, and wheel kit | Oil, funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, cover, neutral bonding plug, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 1 |
| Additional specs | ||
| Summary | The DuroStar DS13000X is a 10,500-watt gasoline generator built to handle whole-home backup power and job site demands. With 13,000 peak watts and a 500cc OHV engine, this unit can run a full refrigerator, multiple air conditioning units, and power tools simultaneously. The 8.3-gallon fuel tank stretches runtime to 17 hours at 25% load, meaning users can maintain power through an entire night without refueling. At 50% load, the 8.5-hour runtime covers a typical workday, making this suitable for both emergency preparedness and extended outdoor use.
The DS13000X includes both recoil and electric start, so users avoid the frustration of pulling a cord in cold weather or after long storage. A 5-year warranty backs the unit, which is 60% longer than the 3.1-year industry average for this wattage class. The combination of power output, fuel capacity, and starting convenience positions this generator as a practical choice for homeowners and contractors who need reliable, extended-runtime power without the complexity of inverter technology. | The Genmax GM15000ET is a 13,000-watt tri-fuel generator built for serious power demands. With 13,000 running watts and 15,000 starting watts, this unit can handle whole-house backup scenarios, including central air conditioning, refrigerators, well pumps, and multiple circuits running simultaneously. Because it runs on gasoline, propane, or natural gas, owners gain real flexibility during emergencies when one fuel source might be unavailable or during extended outages when tapping into a home natural gas line eliminates refueling trips entirely. |
