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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- DuroMax XP4850HX
- Firman W03383
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | DuroMax XP4850HX | Firman W03383 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | Winner: Winner: 3850 W | 3300 W |
| Starting watts | Winner: Winner: 4850 W | 3650 W |
| Noise (lower limit) | 69 dB | Winner: Winner: 58 dB |
| Weight | 126 lbs | Winner: Winner: 91 lbs |
| Run time @50% load | Winner: Winner: 10 h | Not available |
| Run time @25% load | 23 h | 9 h |
| Fuel tank | 4 gal | 1.8 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 23 x 25 x 22 | 23.2 x 17.8 x 17.9 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | 12 |
| GFCI outlets | Yes | No |
| Covered outlets | No | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <3% % |
| Engine | ||
| Engine | 210 cc OHV 4-stroke, cast iron sleeve | 193 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 5 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3850 W | 3300 W |
| Starting watts | 4850 W | 3650 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 | 10 h | Not available |
| Run time @25% load | 23 h | 9 h |
| Propane | Not available | Not available |
| Running watts | 3650 W | Not available |
| Starting watts | 4600 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 | 9 h | Not available |
| Run time @25% load | 18 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | Not available |
| UPC | 811640016197 | 840876133835 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3850 | 3300 |
| Running Watts (Propane) | 3650 | Not available |
| Starting Watts (Gasoline) | 4850 | 3650 |
| Starting Watts (Propane) | 4600 | Not available |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 50% Load (Propane) | 9 | Not available |
| Runtime @ 25% Load (Gasoline) | 23 | 9 |
| Runtime @ 25% Load (Propane) | 18 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) | 1x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 210 | 193 |
| Cylinder Sleeve | cast iron sleeve | cast iron sleeve |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 23 | 9 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 50% Load (Propane) | 9 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Not available |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Mobility Components | Yes | Not available |
| Starting Components | battery | Not available |
| Included Accessories | Funnel, tool kit, propane hose, battery, and wheel kit | Oil, funnel, tool kit, key fob, battery charger, battery charging cables, and battery |
| Warranty & identification | ||
| Commercial Warranty | 5 | Not available |
| Additional specs | ||
| Summary | The DuroMax XP4850HX is a dual-fuel generator with a rated wattage of 3850 watts and a peak wattage of 4850 watts. It features both recoil and electric starting options. | The Firman W03383 is a 3300-watt inverter generator built around a 193cc OHV 4-stroke engine with a cast iron sleeve. At this wattage, it can run a refrigerator, microwave, and several lights simultaneously, or power essential household circuits during an outage. The inverter technology keeps total harmonic distortion below 3%, which protects laptops, smartphones, and other sensitive electronics from voltage spikes. This unit bridges the gap between lightweight portables and mid-range backup power, making it useful for both recreational trips and emergency home backup. |
- Most PowerfulDuroMax XP4850HX3850W running
- QuietestFirman W0338358 dB
- Longest RuntimeDuroMax XP4850HX10h at 50% load
Where to buy
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DuroMax XP4850HX
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Firman W03383
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