
Westinghouse WGen9500TFc EFI vs DuroMax XP15000HXT+
Comparing two tri-fuel generators: the Westinghouse WGen9500TFc EFI (9500W) and DuroMax XP15000HXT+ (12000W). Find the right fit for your power needs.
- DuroMax XP15000HXT+
- Westinghouse WGen9500TFc EFI
Comparison Overview
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's a roughly 26% gap in continuous power, which matters a lot if you're running multiple large appliances or powering a bigger home during an outage.
Both units run on gasoline, propane, or natural gas, and both produce 74 dB of noise, so they're equally loud in operation. The Westinghouse is slightly lighter at 222 lbs compared to the DuroMax's 237 lbs, though neither qualifies as easy to move around. Where the Westinghouse stands out is its EFI (Electronic Fuel Injection) system, which improves fuel efficiency and cold-start reliability. It also carries a higher overall score of 7.18 versus the DuroMax's 6.43.
The DuroMax counters with a longer 5-year warranty compared to the Westinghouse's 3-year coverage, plus better runtime numbers: 17.9 hours at 25% load and 12 hours at 50% load, versus 15 and 10 hours respectively for the Westinghouse. Buyers who need maximum wattage and longer run sessions will lean toward the DuroMax, while those who value fuel efficiency and a more refined engine system may prefer the Westinghouse.
Key takeaways
- DuroMax XP15000HXT+ delivers 12,000 running watts versus the Westinghouse's 9,500 watts
- Westinghouse WGen9500TFc EFI features electronic fuel injection for better efficiency and cold starts
- Both generators run on gasoline, propane, or natural gas and produce 74 dB of noise
- DuroMax offers a longer 5-year warranty compared to Westinghouse's 3-year coverage
- DuroMax runs up to 17.9 hours at 25% load, outpacing the Westinghouse's 15 hours
- Westinghouse is 15 lbs lighter at 222 lbs and scored higher overall at 7.18 vs 6.43
Best use cases
Choose the Westinghouse WGen9500TFc EFI if your power needs fall comfortably within the 9,500-watt range. For most average-sized homes, this is enough to keep essentials running during an outage: a refrigerator, sump pump, window AC unit, lights, and several smaller devices. The EFI system is a genuine advantage here. Electronic fuel injection means the engine adjusts its fuel mixture automatically, which translates to easier starts in cold weather, smoother operation, and better fuel economy over time. If you've ever fought with a carburetor on a cold morning, you'll appreciate this feature. At 222 lbs, it's also a touch easier to position, though you'll still want a wheel kit or a helping hand.
Choose the DuroMax XP15000HXT+ if you need to power a larger home or run heavy-draw equipment. With 12,000 running watts, you can comfortably operate a central air conditioning system, an electric range, a well pump, and still have headroom for other loads. This makes it a strong candidate for whole-house backup or job site use where multiple power tools run simultaneously. The longer runtime (17.9 hours at quarter load) means fewer refueling interruptions during extended outages, and the 5-year warranty provides extra peace of mind for a machine you might not use frequently but need to count on when it matters.
The tradeoff is straightforward. The DuroMax gives you more power and longer runtime but weighs more and lacks the fuel injection refinement of the Westinghouse. The Westinghouse is a more efficient, slightly more portable package, but it simply cannot match the DuroMax's output ceiling. Neither generator is an inverter model, so sensitive electronics like laptops should be plugged in through a surge protector with either unit.
Verdict & recommendation
If your priority is powering a larger home or running high-draw equipment without worrying about wattage limits, the DuroMax XP15000HXT+ is the better tool for the job. Its 12,000 running watts, longer runtime, and 5-year warranty make it a dependable workhorse for serious backup power needs.
If you want a more fuel-efficient generator with modern EFI technology and your power demands stay within 9,500 watts, the Westinghouse WGen9500TFc EFI is a smarter, more refined choice that should cost less to fuel over time.
Both are capable tri-fuel generators built for home standby and heavy-duty portable use. The right pick comes down to how much power you actually need and whether you value engine efficiency or maximum output more.
Last updated April 26, 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) | Winner: Winner: 74 dB | Winner: Winner: 74 dB |
| Weight | 237 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 | 10.6 gal | 6.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 29.5 x 28 x 26 | 27.3 x 20.6 x 22.6 |
| Electrical | ||
| Voltage (AC) | 120/240V 60 Hz | 120/240 |
| Voltage (DC) | Not available | 5 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <5% % | <5% % |
| Engine | ||
| Engine | 500 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 | 10500 W | Not available |
| Starting watts | 13000 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 | Not available | true |
| UPC | 811640017156 | 850060639043 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 12000 | 9500 |
| Running Watts (Propane) | 11400 | Not available |
| Running Watts (Natural Gas) | 10500 | Not available |
| Starting Watts (Gasoline) | 15000 | 12500 |
| Starting Watts (Propane) | 14250 | Not available |
| Starting Watts (Natural Gas) | 13000 | 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 | 2x Duplex 120V 20A (5-20R) GFCI; 2x 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, cast iron sleeve | OHV 4-stroke, cast iron sleeve |
| Engine Displacement | 500 | 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 | Not available | Yes |
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, 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 |
| Warranty & identification | ||
| Residential Warranty | 5 | Not available |
| Commercial Warranty | 5 | Not available |
| 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 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. |
- Most PowerfulDuroMax XP15000HXT+12000W running
- QuietestDuroMax XP15000HXT+74 dB
- Longest RuntimeDuroMax XP15000HXT+12h at 50% load


