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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 W03082
  • Model DXGN4500
    Model DXGN4500

    DEWALT 4,200W Gas Generator

    4200W
    Running
    76 dB
    Noise
    View details
  • Model W03082
    Model W03082

    Firman 3,000W Gas Generator

    3000W
    Running
    58 dB
    Noise
    View details
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).
Generator Specifications Comparison
SpecificationDEWALT DXGN4500Firman W03082
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 4200 W
3000 W
Starting watts
Winner: Winner: 4500 W
3300 W
Noise (lower limit)
76 dB
Winner: Winner: 58 dB
Weight
160 lbs
Winner: Winner: 90 lbs
Run time @50% load
Winner: Winner: 15 h
Not available
Run time @25% load
Not available
9 h
Fuel tank
7 gal
1.8 gal
Fuel gaugeYesNo
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
120V 60 Hz
Voltage (DC)
Not available
12V
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<6% %
<3% %
Engine
Engine
270 cc Honda GX270 OHV 4-stroke
171 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
Alternator
Not available
Not available
Starting system
Recoil
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
4200 W
3000 W
Starting watts
4500 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
15 h
Not available
Run time @25% load
Not available
9 h
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Floating
UPC
696471618594
840876130827
Core / High-priority specs
Running Watts (Gasoline)
4200
3000
Starting Watts (Gasoline)
4500
3300
Runtime @ 50% Load (Gasoline)
15
Not available
Runtime @ 25% Load (Gasoline)
Not available
9
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
171
Cylinder Sleeve
Not available
Cast iron sleeve
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
9
Runtime @ 50% Load (Gasoline)
15
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Included equipment
Included Accessories
Oil and tool kit
Oil, funnel, tool kit, battery charger, battery charging cables, and battery
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 W03082 is a 3000-watt inverter generator built around a 171cc OHV 4-stroke engine. At this wattage, it can power most household appliances simultaneously: a refrigerator (600W), microwave (1000W), and several lights and chargers without strain. The 3300-watt peak handles motor startup surges for tools like circular saws or air compressors. Because it runs on gasoline with a 1.8-gallon tank, refueling happens frequently at higher loads, but the 9-hour runtime at 25% load means light-duty camping or backup power runs through a full day without interruption. The inverter topology keeps total harmonic distortion below 3%, which means laptops, phones, and sensitive medical equipment charge safely without risk of damage from dirty power.
  • Most Powerful
    DEWALT DXGN4500
    4200W running
  • Quietest
    Firman W03082
    58 dB
  • Longest Runtime
    DEWALT DXGN4500
    15h at 50% load
Where to buy
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DEWALT DXGN4500
Store links
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Firman W03082
Store links
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