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  • Firman H03655
  • AIVOLT VS1600101
  • Model H03655
    Model H03655

    Firman 3,650W Dual-Fuel Generator

    3650W
    Running
    67 dB
    Noise
    View details
  • Model VS1600101
    Model VS1600101

    AIVOLT 1,260W Gas Inverter Generator

    1260W
    Running
    57 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
SpecificationFirman H03655AIVOLT VS1600101
General
Product type
Generator
Not available
Fuel
Dual-Fuel
Gasoline
InverterNoYes
Parallel capableNoYes
RV readyYesNo
Running watts
Winner: Winner: 3650 W
1260 W
Starting watts
Winner: Winner: 4550 W
1600 W
Noise (lower limit)
67 dB
Winner: Winner: 57 dB
Weight
112 lbs
Winner: Winner: 28 lbs
Run time @50% load
Winner: Winner: 14 h
Not available
Run time @25% load
Not available
8 h
Fuel tank
5 gal
3.5 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
25.7 x 21.8 x 21.6
16.93″L x 9.92″W x 15.75″H
Electrical
Voltage (AC)
120V 60 Hz
120 Volts (AC)
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
25 %
3 %
Engine
Engine
208 cc OHV 4-stroke, cast iron sleeve
60cc 4-strokes OHV air-cooled engine
Alternator
Not available
Not available
Starting system
Recoil
Not available
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
3650 W
1260 W
Starting watts
4550 W
1600 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
14 h
Not available
Run time @25% load
Not available
8 h
PropaneNot availableNot available
Running watts
3300 W
Not available
Starting watts
4100 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
Not available
Not available
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA, ANSI/PGMA G300-2023
Complies with Emissions Standards
Security
Not available
Not available
Spark arrestorYesNo
Neutral
Floating
Not available
UPC
840876136553
Not available
Core / High-priority specs
Running Watts (Gasoline)
3650
1260
Running Watts (Propane)
3300
Not available
Starting Watts (Gasoline)
4550
1600
Starting Watts (Propane)
4100
Not available
Runtime @ 50% Load (Gasoline)
14
Not available
Runtime @ 25% Load (Gasoline)
Not available
8
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 30A (TT-30R)
Two 120V 20A outlets
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
208 cc OHV 4-stroke, cast iron sleeve
4 Stroke
Engine Displacement
208
60
Cylinder Sleeve
cast iron sleeve
Not available
Alternator Winding Material
Not available
100% copper
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
8
Runtime @ 50% Load (Gasoline)
14
Not available
Controls & display
Idle Control System
Not available
Automatic Idle Control
Safety & compliance
Overload Protection System
Low oil and overload protection
Built-in overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Oil, funnel, tool kit, propane hose, and wheel kit
Not available
Included Accessories
Oil, funnel, tool kit, propane hose, and wheel kit
Not available
Warranty & identification
Residential Warranty
3
2
Commercial Warranty
3
Not available
Additional specs
Summary
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.
The AIVOLT VS1600101 is a gasoline inverter generator with a rated wattage of 1260 and a peak wattage of 1600.
  • Most Powerful
    Firman H03655
    3650W running
  • Quietest
    AIVOLT VS1600101
    57 dB
  • Longest Runtime
    Firman H03655
    14h at 50% load
Where to buy
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Firman H03655
Store links
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AIVOLT VS1600101
Store links
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