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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Champion Power Equipment 201438
  • Firman H03655
  • Model 201438
    Model 201438

    Champion Power Equipment 10,000W Tri-Fuel Generator

    10000W
    Running
    74 dB
    Noise
    View details
  • Model H03655
    Model H03655

    Firman 3,650W Dual-Fuel Generator

    3650W
    Running
    67 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
SpecificationChampion Power Equipment 201438Firman H03655
General
Product type
Generator
Generator
Fuel
Tri-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
Winner: Winner: 10000 W
3650 W
Starting watts
Winner: Winner: 12500 W
4550 W
Noise (lower limit)
74 dB
Winner: Winner: 67 dB
Weight
231 lbs
Winner: Winner: 112 lbs
Run time @50% load
8 h
Winner: Winner: 14 h
Run time @25% load
Not available—
Not available—
Fuel tank
7.7 gal
5 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29 x 28.5 x 25.8
25.7 x 21.8 x 21.6
Electrical
Voltage (AC)
120/240
120V 60 Hz
Voltage (DC)
Not available—
Not available—
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
20 %
25 %
Engine
Engine
500 cc OHV 4-stroke
208 cc OHV 4-stroke, cast iron sleeve
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
10000 W
3650 W
Starting watts
12500 W
4550 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
8 h
14 h
Run time @25% load
Not available—
Not available—
Natural gasNot available—Not available—
Running watts
8000 W
Not available—
Starting watts
Not available—
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
Not available—
Not available—
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
9000 W
3300 W
Starting watts
11250 W
4100 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
3 h
Not available—
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
false
Compliance
EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Bonded to frame
Floating
UPC
817198027913
840876136553
Core / High-priority specs
Running Watts (Gasoline)
10000
3650
Running Watts (Propane)
9000
3300
Running Watts (Natural Gas)
8000
Not available—
Starting Watts (Gasoline)
12500
4550
Starting Watts (Propane)
11250
4100
Runtime @ 50% Load (Gasoline)
8
14
Runtime @ 50% Load (Propane)
3
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R)
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
500 cc OHV 4-stroke
208 cc OHV 4-stroke, cast iron sleeve
Engine Displacement
500
208
Cylinder Sleeve
Not available—
cast iron sleeve
Engine Oil Type
10W-30
Not available—
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
8
14
Runtime @ 50% Load (Propane)
3
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Not available—
Oil, funnel, tool kit, propane hose, and wheel kit
Included Accessories
Oil, funnel, natural gas hose with NPT adapter, propane hose, battery, and wheel kit
Oil, funnel, tool kit, propane hose, and wheel kit
Warranty & identification
Residential Warranty
Not available—
3
Commercial Warranty
3
3
Additional specs
Summary
The Champion Power Equipment 201438 is a 10,000-watt Tri-Fuel portable generator equipped with CO Shield® technology, capable of operating on natural gas, propane, or gasoline.
The Firman H03655 is a 3,650-watt dual-fuel generator built around a 208 cc OHV 4-stroke engine with a cast iron sleeve. Running on gasoline, it delivers 4,550 starting watts and 3,650 running watts. Switch to propane and output drops to 4,100 starting watts and 3,300 running watts. This power level runs a refrigerator, microwave, window air conditioner, or multiple power tools simultaneously. The dual-fuel flexibility means you can operate on whichever fuel is available, a practical advantage during extended outages or when propane storage is more convenient than gasoline. At 67 dB at quarter load, the H03655 operates quietly enough for residential neighborhoods without disturbing neighbors. The 5-gallon tank delivers 14 hours of runtime at 50 percent load on gasoline, translating to roughly one full day of moderate use before refueling. The RV-ready configuration and included wheel kit position this unit as a go-anywhere power source for camping, job sites, and home backup scenarios.
  • Most Powerful
    Champion Power Equipment 201438
    10000W running
  • Quietest
    Firman H03655
    67 dB
  • Longest Runtime
    Firman H03655
    14h at 50% load
Where to buy
Prices can change. We update these automatically.
Champion Power Equipment 201438
Store links
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Firman H03655
Store links
No links yet.
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