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| Specification | DuroMax XP12000HX | Genmax GM3300i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | Yes | Yes |
| Running watts | Winner: Winner: 9500 W | 3000 W |
| Starting watts | Winner: Winner: 12000 W | 3300 W |
| Noise (lower limit) | 74 dB | Winner: Winner: 62 dB |
| Weight | 230 lbs | Winner: Winner: 47.4 lbs |
| Run time @50% load | Winner: Winner: 9 h | 4.5 h |
| Run time @25% load | 19 h | 6 h |
| Fuel tank | 8.3 gal | 1 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 29 x 30 x 26 | 18.9 x 11.4 x 17.3 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120 |
| Voltage (DC) | Not available | 5 |
| GFCI outlets | Yes | No |
| Covered outlets | No | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | Not available |
| Engine | ||
| Engine | 457 cc OHV 4-stroke, cast iron sleeve | 145 cc Dinking OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil |
| Warranty | ||
| Warranty | 5 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 9500 W | 3000 W |
| Starting watts | 12000 W | 3300 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 h | 4.5 h |
| Run time @25% load | 19 h | 6 h |
| Propane | Not available | Not available |
| Running watts | 9025 W | Not available |
| Starting watts | 11400 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 | 3.5 h | Not available |
| Run time @25% load | 7 h | Not available |
| 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 | Floating |
| UPC | 811640016227 | 768494056087 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 9500 | 3000 |
| Running Watts (Propane) | 9025 | Not available |
| Starting Watts (Gasoline) | 12000 | 3300 |
| Starting Watts (Propane) | 11400 | Not available |
| Runtime @ 50% Load (Gasoline) | 9 | 4.5 |
| Runtime @ 50% Load (Propane) | 3.5 | Not available |
| Runtime @ 25% Load (Gasoline) | 19 | 6 |
| Runtime @ 25% Load (Propane) | 7 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Dinking OHV 4-stroke |
| Engine Displacement | 457 | 145 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 19 | 6 |
| Runtime @ 50% Load (Gasoline) | 9 | 4.5 |
| Runtime @ 50% Load (Propane) | 3.5 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric | Not available |
| Included Accessories | Funnel, tool kit, propane hose, battery, and wheel kit | Funnel and tool kit |
| Warranty & identification | ||
| Residential Warranty | 5 | Not available |
| Commercial Warranty | 5 | Not available |
| Part Number | Not available | GE-3300A |
| Additional specs | ||
| Summary | The DuroMax XP12000HX is a 9,500-watt dual-fuel generator built for job sites, home backup, and RV use. Its 12,000-watt peak capacity handles the startup surge of air conditioners, compressors, and welders, while the 9,500-watt running output sustains multiple heavy tools or household circuits simultaneously. Gasoline delivers 19 hours of runtime at quarter load, making this unit suitable for extended outages or multi-day events without constant refueling.
The dual-fuel design means users can switch between gasoline and propane depending on fuel availability and storage constraints. On propane at 25% load, runtime drops to 7 hours, trading endurance for cleaner emissions and longer shelf life. The 457 cc cast iron engine is built for durability on job sites where generators take abuse. This is a stationary workhorse, not a portable grab-and-go unit. | The Genmax GM3300i is a 3000-watt gasoline inverter generator built for portability and clean power. At 47.4 lbs, it moves easily between campsites, job sites, and homes. The 3300-watt peak output handles startup surges on power tools and appliances, while the inverter technology protects laptops and phones from voltage spikes. |