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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.

  • Generac #8251 GP2500i
  • Aceup Energy AG1000
  • Model #8251 GP2500i
    Model #8251 GP2500i

    Generac 2,200W Gas Generator

    2200W
    Running
    0 dB
    Noise
    View details
  • Model AG1000
    Model AG1000

    Aceup Energy 800W Gas Generator

    800W
    Running
    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
SpecificationGenerac #8251 GP2500iAceup Energy AG1000
General
Product type
Generator
Not available—
Fuel
Gasoline
Gasoline
InverterYesNo
Parallel capableYesNo
RV readyNoNo
Running watts
Winner: Winner: 2200 W
800 W
Starting watts
Winner: Winner: 2500 W
1000 W
Noise (lower limit)
0 dB
Not available—
Weight
48 lbs
Winner: Winner: 35.3 lbs
Run time @50% load
4.5 h
Winner: Winner: 6 h
Run time @25% load
8 h
Not available—
Fuel tank
1 gal
1.1 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
19.7 x 11.4 x 17.9
Not available—
Electrical
Voltage (AC)
120
120
Voltage (DC)
12
Not available—
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
Not available—
Not available—
Engine
Engine
98 cc OHV 4-stroke
Aceup Single Cylinder, 2 Cycle Engine
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil start
Warranty
Warranty
3 years
Not available—
Power by fuel
GasolineNot available—Not available—
Running watts
2200 W
800 W
Starting watts
2500 W
1000 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
4.5 h
6 h
Run time @25% load
8 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
Not available—
Compliance
EPA, ANSI/PGMA G300-2023
Not available—
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Not available—
Not available—
UPC
696471003946
Not available—
Core / High-priority specs
Running Watts (Gasoline)
2200
800
Starting Watts (Gasoline)
2500
1000
Runtime @ 50% Load (Gasoline)
4.5
6
Runtime @ 25% Load (Gasoline)
8
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R)
120V AC outlet
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
98 cc OHV 4-stroke
2-stroke
Engine Displacement
98
71
Engine Oil Type
10W-30
Mixing oil (50:1)
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
8
Not available—
Runtime @ 50% Load (Gasoline)
4.5
6
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available—
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil
Not available—
Included Accessories
Oil, funnel, tool kit, and battery charging cables
1000W Generator, User Manual, Spark Plug Wrench, Oil Measuring Cup, Handle
Warranty & identification
Residential Warranty
Not available—
2
Commercial Warranty
3
Not available—
Part Number
82512
Not available—
Additional specs
Summary
The Generac GP2500i is a 2200-watt inverter generator built for portable backup power and recreational use. At 48 pounds, it moves easily between campsites, job sites, and emergency situations. The inverter technology means laptops, phones, and sensitive tools run safely because the power output stays stable. This unit runs on gasoline and delivers 2500 starting watts, so it can handle the initial surge when motors kick on.
The Aceup Energy AG1000 is a gasoline-powered generator with a rated wattage of 800 watts and a peak wattage of 1000 watts. It features a recoil start and is designed for portable use.
  • Most Powerful
    Generac #8251 GP2500i
    2200W running
  • Quietest
    dB
  • Longest Runtime
    Aceup Energy AG1000
    6h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #8251 GP2500i
Store links
No links yet.
Aceup Energy AG1000
Store links
No links yet.
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