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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 #8947 iQ5200DF
  • Aceup Energy AI2500S
  • Model #8947 iQ5200DF
    Model #8947 iQ5200DF

    Generac 3,900W Dual-Fuel Generator

    3900W
    Running
    0 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 @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationGenerac #8947 iQ5200DFAceup Energy AI2500S
General
Product type
Generator
Not available—
Fuel
Dual-Fuel
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyNoYes
Running watts
Winner: Winner: 3900 W
1900 W
Starting watts
Winner: Winner: 5200 W
2500 W
Noise (lower limit)
0 dB
Winner: Winner: 58 dB
Weight
107 lbs
Winner: Winner: 44 lbs
Run time @50% load
Winner: Winner: 9 h
Not available—
Run time @25% load
15 h
10 h
Fuel tank
3.2 gal
1.32 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
24.6 x 20.3 x 22.5
Not available—
Electrical
Voltage (AC)
120
120V
Voltage (DC)
5
12V
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
<3% %
1.5 %
Engine
Engine
223 cc OHV 4-stroke
79.8cc 4-Stroke OHV Engine
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Recoil Start
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
3900 W
1900 W
Starting watts
5200 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
9 h
Not available—
Run time @25% load
15 h
10 h
PropaneNot available—Not available—
Running watts
3500 W
Not available—
Starting watts
4700 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
11 h
Not available—
Run time @25% load
20 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
true
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA Compliant
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
true
Not available—
UPC
696471104509
Not available—
Core / High-priority specs
Running Watts (Gasoline)
3900
1900
Running Watts (Propane)
3500
Not available—
Starting Watts (Gasoline)
5200
2500
Starting Watts (Propane)
4700
Not available—
Runtime @ 50% Load (Gasoline)
9
Not available—
Runtime @ 50% Load (Propane)
11
Not available—
Runtime @ 25% Load (Gasoline)
15
10
Runtime @ 25% Load (Propane)
20
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R)
One 120V 5-20R 20A Outlet
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
4-Stroke OHV
Engine Displacement
223
79.8
Engine Oil Type
10W-30 / SAE 30
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
15
10
Runtime @ 50% Load (Gasoline)
9
Not available—
Runtime @ 50% Load (Propane)
11
Not available—
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—
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Oil, funnel, tool kit, propane hose, and battery
Not available—
Included Accessories
Oil, funnel, tool kit, propane hose, and battery
Not available—
Warranty & identification
Residential Warranty
Not available—
2
Part Number
8947, 8945
AI2500S
Additional specs
Summary
The Generac iQ5200DF is a 3,900-watt dual-fuel inverter generator that bridges emergency home backup and recreational use. At this output level, it powers essential circuits like refrigerators, sump pumps, and window air conditioners simultaneously, but not a full house or central HVAC. The dual-fuel design lets owners switch between gasoline and propane based on availability, a genuine advantage when supply chains break down during extended outages. Because the iQ5200DF produces electronically regulated current with less than 3% THD, laptops, flat-screen TVs, CPAP machines, and smart home devices run safely without voltage-related risk.
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
    Generac #8947 iQ5200DF
    3900W running
  • Quietest
    Aceup Energy AI2500S
    58 dB
  • Longest Runtime
    Generac #8947 iQ5200DF
    9h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #8947 iQ5200DF
Store links
No links yet.
Aceup Energy AI2500S
Store links
No links yet.
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