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- DuroMax XP15000HXT
- Generac #7247 XT8500EFI
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Quick charts
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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 XP15000HXT | Generac #7247 XT8500EFI |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 12000 W | 8500 W |
| Starting watts | Winner: Winner: 15000 W | 10000 W |
| Noise (lower limit) | Winner: Winner: 78 dB | 0 dB |
| Weight | 362 lbs | Winner: Winner: 214 lbs |
| Run time @50% load | Winner: Winner: 12 h | 9 h |
| Run time @25% load | 17.9 h | Not available |
| Fuel tank | 13.2 gal | 8 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 36 x 33.2 x 32 | 31.4 x 20.5 x 26.5 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 12 % | 5 % |
| Engine | ||
| Engine | 670 cc OHV 4-stroke, cast iron sleeve | Generac OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric |
| Warranty | ||
| Warranty | 5 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 12000 W | 8500 W |
| Starting watts | 15000 W | 10000 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 | 12 h | 9 h |
| Run time @25% load | 17.9 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | 10260 W | Not available |
| Starting watts | 12825 W | Not available |
| 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 | 11400 W | Not available |
| Starting watts | 14250 W | Not available |
| 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 | 2.8 h | Not available |
| Run time @25% load | 4.1 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 811640016852 | 696471078336 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 12000 | 8500 |
| Running Watts (Propane) | 11400 | Not available |
| Running Watts (Natural Gas) | 10260 | Not available |
| Starting Watts (Gasoline) | 15000 | 10000 |
| Starting Watts (Propane) | 14250 | Not available |
| Starting Watts (Natural Gas) | 12825 | Not available |
| Runtime @ 50% Load (Gasoline) | 12 | 9 |
| Runtime @ 50% Load (Propane) | 2.8 | Not available |
| Runtime @ 25% Load (Gasoline) | 17.9 | Not available |
| Runtime @ 25% Load (Propane) | 4.1 | Not available |
| AC Outlet Types | 5x 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) GFCI1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 670 | 459 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | 10W-30 | 10W-30 / SAE 30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17.9 | Not available |
| Runtime @ 50% Load (Gasoline) | 12 | 9 |
| Runtime @ 50% Load (Propane) | 2.8 | Not available |
| 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 | ||
| Mobility Components | Yes | Not available |
| Starting Components | Recoil, Electric, Remote | Oil, funnel, battery charger, battery |
| Included Accessories | Funnel, tool kit, key fob, natural gas hose with NPT adapter, propane hose, battery, and wheel kit | Oil, funnel, battery charger, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Additional specs | ||
| Summary | The DuroMax XP15000HXT is a 12,000-watt tri-fuel generator built for stationary backup power and job site work. It runs on gasoline, propane, or natural gas, giving users flexibility to match fuel availability to their location. The 670cc OHV engine delivers 15,000 peak watts on startup, enough to handle the inrush demands of air conditioners, well pumps, and heavy power tools. At 12,000 running watts, it sustains refrigerators, furnaces, and multiple circuits simultaneously. This is a home-backup or construction-grade machine, not a portable camping unit. | The Generac XT8500EFI is an 8,500-watt gasoline generator built for whole-house backup and job site power. With 10,000 starting watts, it can simultaneously run a central air conditioner, refrigerator, sump pump, and lighting circuits, or power multiple heavy-draw tools on a work site. Electronic fuel injection delivers consistent performance and fuel economy, while the 8-gallon tank and 9-hour runtime at 50% load mean a full workday or overnight outage before refueling. |
- Most PowerfulDuroMax XP15000HXT12000W running
- QuietestDuroMax XP15000HXT78 dB
- Longest RuntimeDuroMax XP15000HXT12h at 50% load
Where to buy
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DuroMax XP15000HXT
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Generac #7247 XT8500EFI
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