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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.

  • Firman W03661OF
  • WEN 56432i
  • Model W03661OF
    Model W03661OF

    Firman 3,650W Gas Generator

    3650W
    Running
    69 dB
    Noise
    View details
  • Model 56432i
    Model 56432i

    WEN 3,600W Gas Generator

    3600W
    Running
    62 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 W03661OFWEN 56432i
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyYesYes
Running watts
Winner: Winner: 3650 W
3600 W
Starting watts
Winner: Winner: 4500 W
Winner: Winner: 4500 W
Noise (lower limit)
69 dB
Winner: Winner: 62 dB
Weight
106 lbs
Winner: Winner: 52.9 lbs
Run time @50% load
Not available—
Winner: Winner: 5.6 h
Run time @25% load
25 h
Not available—
Fuel tank
6 gal
1.27 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24.5 x 24.1 x 23
19.3 x 12 x 18.3
Electrical
Voltage (AC)
120
120V AC
Voltage (DC)
12
12V DC
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
3 %
Not available—
Engine
Engine
208 cc OHV 4-stroke, cast iron sleeve.
Not available—
Alternator
Not available—
Not available—
Starting system
Recoil
Not available—
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
3650 W
3600 W
Starting watts
4500 W
4500 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
Not available—
5.6 h
Run time @25% load
25 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA
Not available—
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Floating
Not available—
UPC
840876136614
Not available—
Core / High-priority specs
Running Watts (Gasoline)
3650
3600
Starting Watts (Gasoline)
4500
4500
Runtime @ 50% Load (Gasoline)
Not available—
5.6
Runtime @ 25% Load (Gasoline)
25
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 50A (14-50R)
2 x 120V NEMA 5-20R receptacles. 1 x 120V TT-30R RV receptacle.
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
4 Stroke, OHV, Single Cylinder with Forced Air Cooling System.
Engine Displacement
208
181
Cylinder Sleeve
Cast iron sleeve
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
25
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
5.6
Controls & display
Display Type
Not available—
Intelligent data meter.
Idle Control System
Not available—
Eco-mode.
Safety & compliance
Overload Protection System
Low oil and overload protection
Built-in overload protection.
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Documentation
Not available—
Instruction manual.
Included Accessories
Oil, funnel, tool kit, RV adapter, battery charging cables, and wheel kit
Not available—
Warranty & identification
Residential Warranty
Not available—
3
Commercial Warranty
3
Not available—
Part Number
Not available—
56432i
Additional specs
Summary
The Firman W03661OF is a 3650-watt inverter generator built around a 208cc OHV 4-stroke engine. This wattage class powers most household circuits simultaneously, including refrigerators, microwaves, and power tools, making it suitable for home backup and job site work. The gasoline fuel type and 6-gallon tank give users a familiar refueling experience without special infrastructure. Because this unit runs on standard fuel, users can source power anywhere gasoline is sold, a major advantage over propane or dual-fuel models. The inverter technology produces clean power at 3 percent THD, which means laptops, phones, and sensitive electronics charge safely without risk of voltage spikes.
The WEN 56432i is a gasoline-powered generator with a rated wattage of 3600 and a peak wattage of 4500, designed for reliable power supply.
  • Most Powerful
    Firman W03661OF
    3650W running
  • Quietest
    WEN 56432i
    62 dB
  • Longest Runtime
    WEN 56432i
    5.6h at 50% load
Where to buy
Prices can change. We update these automatically.
Firman W03661OF
Store links
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WEN 56432i
Store links
No links yet.
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