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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 W03386
  • Aceup Energy AI2500S
  • Model W03386
    Model W03386

    Firman 3,300W Gas Generator

    3300W
    Running
    58 dB
    Noise
    View details
  • Model AI2500S
    Model AI2500S

    Aceup Energy 1,900W Gas Inverter Generator

    1900W
    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 @25%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationFirman W03386Aceup Energy AI2500S
General
Product type
Generator
Not available
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyYesYes
Running watts
Winner: Winner: 3300 W
1900 W
Starting watts
Winner: Winner: 3650 W
2500 W
Noise (lower limit)
Winner: Winner: 58 dB
Winner: Winner: 58 dB
Weight
91 lbs
Winner: Winner: 44 lbs
Run time @50% load
Not available
Not available
Run time @25% load
9 h
Winner: Winner: 10 h
Fuel tank
1.8 gal
1.32 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
23.2 x 17.8 x 17.9
Not available
Electrical
Voltage (AC)
120
120V
Voltage (DC)
12
12V
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
<3% %
1.5 %
Engine
Engine
193 cc OHV 4-stroke, cast iron sleeve.
79.8cc 4-Stroke OHV Engine
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil Start
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
3300 W
1900 W
Starting watts
3650 W
2500 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
Not available
Run time @25% load
9 h
10 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
EPA Compliant
Security
Not available
Not available
Spark arrestorYesNo
Neutral
Floating
Not available
UPC
840876133866
Not available
Core / High-priority specs
Running Watts (Gasoline)
3300
1900
Starting Watts (Gasoline)
3650
2500
Runtime @ 25% Load (Gasoline)
9
10
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
One 120V 5-20R 20A Outlet
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
4-Stroke OHV
Engine Displacement
193
79.8
Cylinder Sleeve
cast iron sleeve
Not available
Engine Oil Type
See 'Add Engine Oil' Section
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
9
10
Controls & display
Display Type
Not available
Intelligent Gauge
Idle Control System
Not available
Eco Mode
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
Included equipment
Included Accessories
Oil, funnel, tool kit, key fob, battery charger, battery charging cables, and battery
Not available
Warranty & identification
Residential Warranty
Not available
2
Commercial Warranty
3
Not available
Part Number
Not available
AI2500S
Additional specs
Summary
The Firman W03386 is a 3,300-watt inverter generator built for RV camping, emergency backup, and light job site work. Its 3,650-watt peak capacity handles startup surges from air conditioning units, refrigerators, and power tools without strain. Because the unit runs on gasoline with a 1.8-gallon tank, users get up to 9 hours of runtime at 25% load before refueling. The inverter topology and sub-3% THD output means laptops, smartphones, and sensitive electronics charge safely without voltage spikes that damage circuitry. At 58 dB, it operates at conversational volume, making it acceptable for residential neighborhoods and campgrounds where noise restrictions apply. This is a mid-sized workhorse for users who need portable power without the weight penalty of larger stationary units.
The Aceup Energy AI2500S is a gasoline-powered inverter generator with a rated wattage of 1900 watts and a peak wattage of 2500 watts.
  • Most Powerful
    Firman W03386
    3300W running
  • Quietest
    Firman W03386
    58 dB
  • Longest Runtime
    h at 50% load
Where to buy
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Firman W03386
Store links
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Aceup Energy AI2500S
Store links
No links yet.
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