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Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
- DEWALT DXGN4500
- Firman W03381
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 | DEWALT DXGN4500 | Firman W03381 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | Winner: Winner: 4200 W | 3300 W |
| Starting watts | Winner: Winner: 4500 W | 3650 W |
| Noise (lower limit) | 76 dB | Winner: Winner: 58 dB |
| Weight | 160 lbs | Winner: Winner: 87 lbs |
| Run time @50% load | Winner: Winner: 15 h | Not available |
| Run time @25% load | Not available | 10 h |
| Fuel tank | 7 gal | 1.8 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 28.2 x 21.3 x 24.1 | 23.2 x 17.8 x 17.9 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120 |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <6% % | 3 % |
| Engine | ||
| Engine | 270 cc Honda GX270 OHV 4-stroke | 193 cc Firman Max-Pro Series OHV 4-Stroke, Cast Iron Sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 4200 W | 3300 W |
| Starting watts | 4500 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 | 15 h | Not available |
| Run time @25% load | Not available | 10 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | Floating |
| UPC | 696471618594 | 840876133811 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 4200 | 3300 |
| Starting Watts (Gasoline) | 4500 | 3650 |
| Runtime @ 50% Load (Gasoline) | 15 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 20A (L14-20R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Honda GX270 OHV 4-stroke | OHV 4-Stroke |
| Engine Displacement | 270 | 193 |
| Cylinder Sleeve | Not available | Cast iron sleeve |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 10 |
| Runtime @ 50% Load (Gasoline) | 15 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | No |
| Included equipment | ||
| Starting Components | Not available | Recoil |
| Included Accessories | Oil and tool kit | Oil, funnel, tool kit, and battery charging cables |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Part Number | PD422MHI005 | Not available |
| Additional specs | ||
| Summary | The DEWALT DXGN4500 is a 4200-watt gasoline generator built around a Honda GX270 engine, positioning it as a workhorse for job sites and extended outdoor use. At 160 pounds, this unit sits at the heavy end of the portable generator spectrum, meaning it stays put once deployed rather than moving between locations. The 7-gallon fuel tank stretches to 15 hours at half load, so users can power a full day of work or an extended event without refueling. The dual-voltage output (120V and 120/240V) lets contractors run both household circuits and heavy equipment from a single machine. | The Firman W03381 is a 3300-watt inverter generator built around a 193cc OHV 4-stroke engine with a cast iron sleeve. This wattage puts it in the mid-range portable segment, capable of powering a refrigerator, microwave, and several household circuits simultaneously, or running a single large tool on a job site. The 3650-watt starting capacity handles the inrush demand of compressors and air conditioning units. Because the W03381 runs on gasoline with a 1.8-gallon tank, users will find a 10-hour runtime at 25% load, which translates to roughly 2.5 hours of continuous full-load operation before refueling becomes necessary. The inverter topology and 3% THD output mean sensitive electronics like laptops, phones, and televisions receive stable, clean power without risk of damage. At 58 decibels, this generator operates at a volume comparable to normal conversation, making it suitable for residential neighborhoods and RV parks where noise restrictions apply. |
- Most PowerfulDEWALT DXGN45004200W running
- QuietestFirman W0338158 dB
- Longest RuntimeDEWALT DXGN450015h at 50% load
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DEWALT DXGN4500
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Firman W03381
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