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| Specification | Cummins Onan P9500DF EFI | DuroMax XP9500iH |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Dual-Fuel |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | 7500 W | Winner: Winner: 7600 W |
| Starting watts | Winner: Winner: 9500 W | Winner: Winner: 9500 W |
| Noise (lower limit) | 74 dB | Winner: Winner: 61 dB |
| Weight | Winner: Winner: 211.6 lbs | 216 lbs |
| Run time @50% load | 9.6 h | Winner: Winner: 11 h |
| Run time @25% load | 14.4 h | 21 h |
| Fuel tank | 6.6 gal | 7.1 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 27.3 x 20.6 x 22.6 | 26.2 x 25 x 29.6 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 23 % | 3 % |
| Engine | ||
| Engine | 420 cc OHV 4-stroke | 459 cc OHV 4-stroke, cast iron sleeve. |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 3 years | 5 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 7500 W | Not available |
| Starting watts | 9500 W | 9500 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 | 9.6 h | 11 h |
| Run time @25% load | 14.4 h | 21 h |
| Propane | Not available | Not available |
| Running watts | 6750 W | 7200 W |
| Starting watts | 8550 W | 9025 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 | 5 h |
| Run time @25% load | 10.8 h | 9.5 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | Not available |
| UPC | Not available | 811640017026 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 7500 | Not available |
| Running Watts (Propane) | 6750 | 7200 |
| Starting Watts (Gasoline) | 9500 | 9500 |
| Starting Watts (Propane) | 8550 | 9025 |
| Runtime @ 50% Load (Gasoline) | 9.6 | 11 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Runtime @ 25% Load (Gasoline) | 14.4 | 21 |
| Runtime @ 25% Load (Propane) | 10.8 | 9.5 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) | 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 | 459 cc OHV 4-stroke, cast iron sleeve. |
| Engine Displacement | 420 | 459 |
| Cylinder Sleeve | Not available | cast_iron_sleeve |
| Alternator Winding Material | Not available | Copper |
| Engine Oil Type | SAE10W30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14.4 | 21 |
| Runtime @ 50% Load (Gasoline) | 9.6 | 11 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Mobility Components | Yes | Not available |
| Included Accessories | Oil, funnel, tool kit, key fob, propane hose, battery, and wheel kit | Funnel, tool kit, key fob, battery charger, propane hose, and battery |
| Warranty & identification | ||
| Commercial Warranty | 3 | 5 |
| Part Number | A075C509 | Not available |
| Additional specs | ||
| Summary | The Cummins Onan P9500DF EFI is a 7,500-watt dual-fuel generator built for users who need sustained power across multiple load types. On gasoline, it delivers 7,500 running watts and 9,500 peak watts. On propane, it drops to 6,750 running watts and 8,550 peak watts, which means propane users sacrifice roughly 10 percent of output but gain extended storage life and cleaner emissions. The electronic fuel injection engine handles high-altitude operation up to 13,123 feet without modification, making it viable for mountain jobsites, remote cabins, and RV camps where carbureted engines would struggle. At 211.6 pounds with an included wheel kit, this generator demands stationary placement or two-person handling, but the 6.6-gallon fuel tank stretches runtime to 14.4 hours at 25 percent load on gasoline. This is a workhorse for contractors, emergency backup, and off-grid scenarios where fuel flexibility and durability matter more than portability. | The DuroMax XP9500iH is a 7,600-watt dual-fuel inverter generator built for whole-home backup and job-site power. Running on either gasoline or propane, it delivers 9,500 starting watts to handle motor inrush demands from air conditioners, well pumps, and power tools. The inverter produces clean 3% THD power, meaning laptops, televisions, and medical equipment run safely without risk of voltage spikes. This is a stationary or semi-portable unit. At 216 pounds, it requires wheels or multiple people to move, making it suited for permanent installation or fixed-location backup rather than frequent relocation.
The fuel flexibility matters in extended outages. Gasoline runs 11 hours at half load before refueling, while propane stretches to 5 hours at the same draw. At quarter load, gasoline delivers 21 hours of runtime, propane 9.5 hours. For homeowners choosing between fuel types, gasoline offers longer intervals between refills, propane offers cleaner storage and no fuel degradation over months. |
