
DuroStar DS13000MXT vs DuroMax XP15000HXT+
Comparing two tri-fuel conventional generators: the DuroStar DS13000MXT (10,500W) and DuroMax XP15000HXT+ (12,000W). Which fits your power needs?
- DuroMax XP15000HXT+
- DuroStar DS13000MXT
Comparison Overview
The DuroMax XP15000HXT+ delivers 12,000 running watts compared to the DuroStar DS13000MXT's 10,500 running watts, giving it a meaningful 1,500-watt advantage for powering larger loads. Both are tri-fuel generators capable of running on gasoline, propane, or natural gas, and both produce 74 dB of noise. The DuroMax also edges ahead in runtime at 50% load, lasting 12 hours versus the DuroStar's 8.5 hours, though at 25% load the gap narrows to just under an hour (17.9 vs 17 hours).
The DuroStar DS13000MXT fights back with a lighter frame at 211 pounds compared to the DuroMax's 237 pounds, making it somewhat easier to move around. It also carries a higher overall score of 7.55 versus the DuroMax's 6.42, suggesting stronger marks in areas like value and build quality. However, the DuroMax comes with a 5-year warranty, which is notably longer than the DuroStar's 3-year coverage.
If you need the most wattage and longest warranty in this class, the DuroMax XP15000HXT+ is the stronger pick. If you want a capable tri-fuel generator that's a bit lighter and potentially a better overall value, the DuroStar DS13000MXT deserves serious consideration.
Key takeaways
- DuroMax XP15000HXT+ delivers 12,000 running watts versus the DuroStar's 10,500 watts
- DuroStar DS13000MXT weighs 211 pounds, 26 pounds lighter than the DuroMax at 237 pounds
- DuroMax offers a 5-year warranty compared to the DuroStar's 3-year warranty
- Both generators run on three fuel types: gasoline, propane, and natural gas
- DuroMax runs 12 hours at 50% load versus the DuroStar's 8.5 hours
- Both produce 74 dB of noise, so neither has a sound advantage
Best use cases
Choose the DuroStar DS13000MXT if you need a solid whole-home backup generator but don't necessarily need to power everything at once. With 10,500 running watts, it can handle most essential circuits, including a refrigerator, sump pump, well pump, lights, and a smaller central air conditioning unit. At 211 pounds, it's still heavy, but roughly 26 pounds lighter than the DuroMax, which matters if you need to reposition it or load it into a truck bed. The tri-fuel flexibility means you can run it on whatever fuel is available during an extended outage. If you're budget-conscious and want a generator that punches above its weight in overall quality, this is a strong option.
Choose the DuroMax XP15000HXT+ if your home has higher electrical demands or you want more headroom for running multiple large appliances simultaneously. The 12,000 running watts and 15,000 starting watts give you the capacity to handle a larger central AC unit alongside other heavy loads without worrying about tripping the breaker. The 12-hour runtime at half load is a real advantage during prolonged power outages, meaning fewer middle-of-the-night refueling trips. The 5-year warranty also provides extra peace of mind for a machine you might only use during emergencies, since problems can surface years after purchase.
Both generators share the same noise level, so neither has an advantage there. Neither is an inverter generator, so sensitive electronics like laptops should be plugged in through a surge protector. For job site use where you're running power tools and compressors, either will perform well, but the DuroMax gives you more breathing room for running multiple tools at once.
Verdict & recommendation
If your priority is maximum power output and long-term warranty protection, the DuroMax XP15000HXT+ is the better fit. Its 1,500 extra running watts and 5-year warranty make it a compelling choice for homeowners with larger electrical panels or anyone who values extended coverage. If you'd rather save some weight, potentially some money, and still get a very capable tri-fuel generator with strong overall quality marks, the DuroStar DS13000MXT is a smart buy that will handle most home backup and job site scenarios without breaking a sweat.
Both generators are well-matched for emergency preparedness and heavy-duty portable power. Your decision should come down to whether you need that extra wattage headroom or prefer a lighter, potentially better-value package.
Last updated April 21, 2026
| Specification | DuroMax XP15000HXT+ | DuroStar DS13000MXT |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Tri-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | Yes |
| Running watts | Winner: Winner: 12000 W | 10500 W |
| Starting watts | Winner: Winner: 15000 W | 13000 W |
| Noise (lower limit) | Winner: Winner: 74 dB | Winner: Winner: 74 dB |
| Weight | 237 lbs | Winner: Winner: 211 lbs |
| Run time @50% load | Winner: Winner: 12 h | 8.5 h |
| Run time @25% load | 17.9 h | 17 h |
| Fuel tank | 10.6 gal | 8.3 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 29.5 x 28 x 26 | 30.5 x 27.3 x 26 |
| Electrical | ||
| Voltage (AC) | 120/240V 60 Hz | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <5% % | Not available |
| Engine | ||
| Engine | 500 cc OHV 4-stroke, cast iron sleeve | 500 cc OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 5 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 12000 W | 10500 W |
| Starting watts | 15000 W | 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 | 12 h | 8.5 h |
| Run time @25% load | 17.9 h | 17 h |
| Natural gas | Not available | Not available |
| Running watts | 10500 W | 9000 W |
| Starting watts | 13000 W | 11250 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 | 11400 W | 10000 W |
| Starting watts | 14250 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 | 2.8 h | 3.3 h |
| Run time @25% load | 4.1 h | 6.5 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 | Not available |
| UPC | 811640017156 | 811640017149 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 12000 | 10500 |
| Running Watts (Propane) | 11400 | 10000 |
| Running Watts (Natural Gas) | 10500 | 9000 |
| Starting Watts (Gasoline) | 15000 | 13000 |
| Starting Watts (Propane) | 14250 | 12500 |
| Starting Watts (Natural Gas) | 13000 | 11250 |
| Runtime @ 50% Load (Gasoline) | 12 | 8.5 |
| Runtime @ 50% Load (Propane) | 2.8 | 3.3 |
| Runtime @ 25% Load (Gasoline) | 17.9 | 17 |
| Runtime @ 25% Load (Propane) | 4.1 | 6.5 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 2x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke, cast iron sleeve | OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 500 | 500 |
| Cylinder Sleeve | cast iron sleeve | cast iron sleeve |
| Alternator Winding Material | Copper windings | Copper windings |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17.9 | 17 |
| Runtime @ 50% Load (Gasoline) | 12 | 8.5 |
| Runtime @ 50% Load (Propane) | 2.8 | 3.3 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | No |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, battery, and wheel kit | Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, battery, and wheel kit |
| Warranty & identification | ||
| Residential Warranty | 5 | Not available |
| Commercial Warranty | 5 | 3 |
| Additional specs | ||
| Summary | The DuroMax XP15000HXT+ is a 12,000-watt tri-fuel generator built for serious backup power and job site work. Running on gasoline, propane, or natural gas, it delivers 15,000 peak watts and 12,000 running watts, enough to power multiple heavy loads simultaneously like refrigerators, air conditioners, and construction tools. The tri-fuel flexibility means users can choose the most available or cost-effective fuel source for their situation. This is a stationary workhorse, not a portable grab-and-go unit. At 237 pounds with a 29.5 x 28 x 26 inch footprint, it requires permanent placement or serious logistics to move. The included wheel kit helps, but this generator is built to stay put once deployed. | The DuroStar DS13000MXT is a 10,500-watt tri-fuel generator built for high-demand applications. Its tri-fuel capability (gasoline, propane, natural gas) and 13,000-watt starting capacity make it suitable for whole-house backup, RV power, and job-site work where fuel supply flexibility matters. |
- Most PowerfulDuroMax XP15000HXT+12000W running
- QuietestDuroMax XP15000HXT+74 dB
- Longest RuntimeDuroMax XP15000HXT+12h at 50% load


