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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.

  • Genmax GM6250iET
  • Aceup Energy AI2500S
  • Model GM6250iET
    Model GM6250iET

    Genmax 5,500W Tri-Fuel Generator

    5500W
    Running
    66 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
SpecificationGenmax GM6250iETAceup Energy AI2500S
General
Product type
Generator
Not available—
Fuel
Tri-Fuel
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyYesYes
Running watts
Winner: Winner: 5500 W
1900 W
Starting watts
Winner: Winner: 6250 W
2500 W
Noise (lower limit)
66 dB
Winner: Winner: 58 dB
Weight
102.6 lbs
Winner: Winner: 44 lbs
Run time @50% load
Not available—
Not available—
Run time @25% load
Winner: Winner: 10 h
Winner: Winner: 10 h
Fuel tank
3 gal
1.32 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
22.8 x 17.8 x 19.7
Not available—
Electrical
Voltage (AC)
120/240
120V
Voltage (DC)
5
12V
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
3 %
1.5 %
Engine
Engine
224 cc OHV 4-stroke
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 available—Not available—
Running watts
5500 W
1900 W
Starting watts
6250 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
10 h
10 h
Natural gasNot available—Not available—
Running watts
4500 W
Not available—
Starting watts
5000 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—
PropaneNot available—Not available—
Running watts
5000 W
Not available—
Starting watts
5500 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
11 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
EPA, ANSI/PGMA G300-2023
EPA Compliant
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
true
Not available—
UPC
784482491296
Not available—
Core / High-priority specs
Running Watts (Gasoline)
5500
1900
Running Watts (Propane)
5000
Not available—
Running Watts (Natural Gas)
4500
Not available—
Starting Watts (Gasoline)
6250
2500
Starting Watts (Propane)
5500
Not available—
Starting Watts (Natural Gas)
5000
Not available—
Runtime @ 25% Load (Gasoline)
10
10
Runtime @ 25% Load (Propane)
11
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 50A (14-50R)
One 120V 5-20R 20A Outlet
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
224 cc OHV 4-stroke
4-Stroke OHV
Engine Displacement
224
79.8
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
10
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, CO monitoring
Not available—
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric, Remote
Not available—
Included Accessories
Funnel, tool kit, key fob, battery charger, cover, 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 Genmax GM6250iET is a 5,500-watt tri-fuel inverter generator built for users who need substantial backup power without sacrificing electronics protection. Its 3% THD rating means it can safely power laptops, refrigerators, and air conditioning units simultaneously, while the tri-fuel capability lets owners switch between gasoline, propane, and natural gas depending on availability. This combination of clean power and fuel flexibility makes it a practical choice for RV owners, homeowners facing extended outages, and job sites where power quality matters as much as raw wattage.
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
    Genmax GM6250iET
    5500W running
  • Quietest
    Aceup Energy AI2500S
    58 dB
  • Longest Runtime
    h at 50% load
Where to buy
Prices can change. We update these automatically.
Genmax GM6250iET
Store links
No links yet.
Aceup Energy AI2500S
Store links
No links yet.
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