
Comparing two tri-fuel generators: the 9,500W Westinghouse WGen9500TFc EFI and the 12,000W DuroMax XP15000HXT. Find the right fit for your power needs.
The biggest difference between these two tri-fuel generators is raw power output. The DuroMax XP15000HXT delivers 12,000 running watts and 15,000 starting watts, while the Westinghouse WGen9500TFc EFI produces 9,500 running watts and 12,500 starting watts. That 2,500-watt gap in running capacity is significant, especially if you need to power multiple large appliances or heavy equipment simultaneously.
Both units run on gasoline, propane, or natural gas, giving you excellent fuel flexibility during emergencies or extended outages. The Westinghouse stands out with its Electronic Fuel Injection (EFI) system, which improves fuel efficiency and cold-start reliability. It also weighs considerably less at 222 lbs compared to the DuroMax's 362 lbs, making it more manageable to move around. The DuroMax counters with a longer 5-year warranty versus the Westinghouse's 3-year coverage, and slightly better runtime at both 25% load (17.9 hours vs 15 hours) and 50% load (12 hours vs 10 hours).
Noise is worth noting too. The Westinghouse operates at 74 dB, while the DuroMax runs louder at 78 dB. If you need serious whole-house backup power or job site capacity, the DuroMax is the stronger choice. If you want a lighter, quieter, and more fuel-efficient unit that still packs plenty of power, the Westinghouse is compelling.
Choose the Westinghouse WGen9500TFc EFI if you want a capable tri-fuel generator that balances power with portability. At 222 lbs, it is roughly 140 lbs lighter than the DuroMax, which matters if you ever need to load it into a truck bed or reposition it around your property. The EFI system means more reliable starts in cold weather and better fuel economy over time, so you will spend less on gas during extended outages. With 9,500 running watts, it can handle most home backup scenarios, including running a refrigerator, sump pump, window AC unit, lights, and a few smaller appliances at the same time. It is also the better pick if noise is a concern, since 74 dB is noticeably quieter than 78 dB. For homeowners who want solid emergency backup without the bulk of a truly massive generator, this is a smart fit.
Choose the DuroMax XP15000HXT if your power demands are higher and weight is not a dealbreaker. With 12,000 running watts and 15,000 starting watts, this generator can handle central air conditioning, multiple power tools on a job site, or powering a larger home with more circuits during an outage. The longer runtime at both load levels (17.9 hours at 25% and 12 hours at 50%) means fewer refueling interruptions during prolonged emergencies. The 5-year warranty also provides extra peace of mind for a machine you may rely on heavily. The tradeoff is real, though. At 362 lbs, this is not a generator you will casually move around, and the higher noise level means neighbors will notice it. If you need the extra wattage and plan to keep it relatively stationary, the DuroMax earns its place.
If your priority is maximum power output, longer runtime, and extended warranty coverage, the DuroMax XP15000HXT is the stronger pick, especially for larger homes or demanding job sites. If you value a lighter, quieter generator with modern EFI technology and better fuel efficiency, the Westinghouse WGen9500TFc EFI is the smarter choice for moderate power needs.
Both generators offer excellent tri-fuel flexibility, which is a genuine advantage during natural disasters when any single fuel source might be hard to find. The decision really comes down to how much power you actually need versus how much weight and noise you are willing to tolerate. For most standard homes, the Westinghouse's 9,500 running watts will cover the essentials comfortably. For larger properties or professional use, the DuroMax's extra capacity is hard to ignore.
Last updated September 27, 2026


| Specification | DuroMax XP15000HXT | Westinghouse WGen9500TFc EFI |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Tri-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 12000 W | 9500 W |
| Starting watts | Winner: Winner: 15000 W | 12500 W |
| Noise (lower limit) | 78 dB | Winner: Winner: 74 dB |
| Weight | 362 lbs | Winner: Winner: 222 lbs |
| Run time @50% load | Winner: Winner: 12 h | 10 h |
| Run time @25% load | 17.9 h | 15 h |
| Fuel tank | 13.2 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 36 x 33.2 x 32 | 27.3 x 20.6 x 22.6 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | 5 |
| 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 | 457 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 | 9500 W |
| Starting watts | 15000 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 | 12 h | 10 h |
| Run time @25% load | 17.9 h | 15 h |
| 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, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 811640016852 | 850060639043 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 12000 | 9500 |
| Running Watts (Propane) | 11400 | Not available |
| Running Watts (Natural Gas) | 10260 | Not available |
| Starting Watts (Gasoline) | 15000 | 12500 |
| Starting Watts (Propane) | 14250 | Not available |
| Starting Watts (Natural Gas) | 12825 | Not available |
| Runtime @ 50% Load (Gasoline) | 12 | 10 |
| Runtime @ 50% Load (Propane) | 2.8 | Not available |
| Runtime @ 25% Load (Gasoline) | 17.9 | 15 |
| 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); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 670 | 457 |
| Cylinder Sleeve | cast iron sleeve | Cast iron sleeve |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | 10W-30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17.9 | 15 |
| Runtime @ 50% Load (Gasoline) | 12 | 10 |
| 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 | Yes |
| Starting Components | Recoil, Electric, Remote | Not available |
| Included Accessories | Funnel, tool kit, key fob, natural gas hose with NPT adapter, propane hose, battery, and wheel kit | Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit |
| 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 Westinghouse WGen9500DFc is a dual fuel portable generator that produces up to 12,500 peak watts and 9,500 running watts, operating on gasoline or propane. It features a heavy-duty 457cc 4-Stroke OHV Westinghouse Engine, runs for up to 12 hours on a 6.6-gallon gas tank, and includes a CO sensor for safety. |