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

  • Firman W03082
  • Genmax GM3300i
  • Model W03082
    Model W03082

    Firman 3,000W Gas Generator

    3000W
    Running
    58 dB
    Noise
    View details
  • Model GM3300i
    Model GM3300i

    Genmax 3,000W Gas Generator

    3000W
    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 W03082Genmax GM3300i
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyYesYes
Running watts
Winner: Winner: 3000 W
Winner: Winner: 3000 W
Starting watts
Winner: Winner: 3300 W
Winner: Winner: 3300 W
Noise (lower limit)
Winner: Winner: 58 dB
62 dB
Weight
90 lbs
Winner: Winner: 47.4 lbs
Run time @50% load
Not available
Winner: Winner: 4.5 h
Run time @25% load
9 h
6 h
Fuel tank
1.8 gal
1 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
23.2 x 17.8 x 17.9
18.9 x 11.4 x 17.3
Electrical
Voltage (AC)
120V 60 Hz
120
Voltage (DC)
12V
5
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<3% %
Not available
Engine
Engine
171 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
145 cc Dinking OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
3000 W
3000 W
Starting watts
3300 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
Not available
4.5 h
Run time @25% load
9 h
6 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Floating
UPC
840876130827
768494056087
Core / High-priority specs
Running Watts (Gasoline)
3000
3000
Starting Watts (Gasoline)
3300
3300
Runtime @ 50% Load (Gasoline)
Not available
4.5
Runtime @ 25% Load (Gasoline)
9
6
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
1x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
Dinking OHV 4-stroke
Engine Displacement
171
145
Cylinder Sleeve
Cast iron sleeve
Not available
Engine Oil Type
Not available
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
9
6
Runtime @ 50% Load (Gasoline)
Not available
4.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Included Accessories
Oil, funnel, tool kit, battery charger, battery charging cables, and battery
Funnel and tool kit
Warranty & identification
Commercial Warranty
3
Not available
Part Number
Not available
GE-3300A
Additional specs
Summary
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.
The Genmax GM3300i is a 3000-watt gasoline inverter generator built for portability and clean power. At 47.4 lbs, it moves easily between campsites, job sites, and homes. The 3300-watt peak output handles startup surges on power tools and appliances, while the inverter technology protects laptops and phones from voltage spikes.
  • Most Powerful
    Firman W03082
    3000W running
  • Quietest
    Firman W03082
    58 dB
  • Longest Runtime
    Genmax GM3300i
    4.5h at 50% load
Where to buy
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Firman W03082
Store links
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Genmax GM3300i
Store links
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