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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 XP5500HX
  • Firman W03381
  • Model XP5500HX
    Model XP5500HX

    DuroMax 4,500W Dual-Fuel Generator

    4500W
    Running
    69 dB
    Noise
    View details
  • Model W03381
    Model W03381

    Firman 3,300W Gas Generator

    3300W
    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
SpecificationDuroMax XP5500HXFirman W03381
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 4500 W
3300 W
Starting watts
Winner: Winner: 5500 W
3650 W
Noise (lower limit)
69 dB
Winner: Winner: 58 dB
Weight
128 lbs
Winner: Winner: 87 lbs
Run time @50% load
Winner: Winner: 9 h
Not available
Run time @25% load
19 h
10 h
Fuel tank
4 gal
1.8 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
23 x 25 x 22
23.2 x 17.8 x 17.9
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
5
12
GFCI outletsYesNo
Covered outletsNoYes
Automatic Voltage RegulationYesYes
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
Warranty
Warranty
5 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
4500 W
3300 W
Starting watts
5500 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
9 h
Not available
Run time @25% load
19 h
10 h
PropaneNot availableNot available
Running watts
4275 W
Not available
Starting watts
5225 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
8 h
Not available
Run time @25% load
15 h
Not available
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
Floating
UPC
811640016203
840876133811
Core / High-priority specs
Running Watts (Gasoline)
4500
3300
Running Watts (Propane)
4275
Not available
Starting Watts (Gasoline)
5500
3650
Starting Watts (Propane)
5225
Not available
Runtime @ 50% Load (Gasoline)
9
Not available
Runtime @ 50% Load (Propane)
8
Not available
Runtime @ 25% Load (Gasoline)
19
10
Runtime @ 25% Load (Propane)
15
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R) 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
210 cc OHV 4-stroke, cast iron sleeve
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
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
19
10
Runtime @ 50% Load (Gasoline)
9
Not available
Runtime @ 50% Load (Propane)
8
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Not available
Recoil
Included Accessories
Funnel, tool kit, propane hose, battery, and wheel kit
Oil, funnel, tool kit, and battery charging cables
Warranty & identification
Commercial Warranty
5
3
Additional specs
Summary
The DuroMax XP5500HX is a 4,500-watt dual-fuel generator built for homeowners, job sites, and outdoor events. Running on either gasoline or propane, it delivers 5,500 peak watts at startup, enough to power refrigerators, air conditioning units, power tools, and multiple devices simultaneously. The dual-fuel design eliminates fuel sourcing constraints. At 25% load on gasoline, the unit runs for 19 hours before refueling, stretching a single tank across an entire workday or overnight camping trip. This runtime advantage makes it practical for extended outages or remote projects where frequent refueling would interrupt operations.
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 Powerful
    DuroMax XP5500HX
    4500W running
  • Quietest
    Firman W03381
    58 dB
  • Longest Runtime
    DuroMax XP5500HX
    9h at 50% load
Where to buy
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DuroMax XP5500HX
Store links
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Firman W03381
Store links
No links yet.
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