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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.

  • A-iPower GXS8200D
  • Cummins Onan P9500df
  • Model GXS8200D
    Model GXS8200D

    A-iPower 6,500W Dual-Fuel Generator

    6500W
    Running
    68 dB
    Noise
    View details
  • Model Onan P9500df
    Model Onan P9500df

    Cummins 7,500W Dual-Fuel Generator

    7500W
    Running
    74 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
SpecificationA-iPower GXS8200DCummins Onan P9500df
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
6500 W
Winner: Winner: 7500 W
Starting watts
8200 W
Winner: Winner: 9500 W
Noise (lower limit)
Winner: Winner: 68 dB
74 dB
Weight
Winner: Winner: 143.7 lbs
194 lbs
Run time @50% load
Not available—
Winner: Winner: 11 h
Run time @25% load
Not available—
16 h
Fuel tank
6.3 gal
6.6 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
26 x 25 x 23.7
27.3 x 26.3 x 26.3
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
5
Not available—
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
23 %
23 %
Engine
Engine
322 cc OHV 4-stroke, cast iron sleeve
420 cc Ducar OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil, Electric, Remote
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
6500 W
7500 W
Starting watts
8200 W
9500 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
17 h
11 h
Run time @25% load
17 h
16 h
PropaneNot available—Not available—
Running watts
5900 W
6750 W
Starting watts
7400 W
8550 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
8 h
Other
Data center
Digital data center
Not available—
Indicators
true
false
Compliance
EPA, ANSI/PGMA G300-2023
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
true
UPC
850055834682
690781007932
Core / High-priority specs
Generator Type
Generator
Not available—
Running Watts (Gasoline)
6500
7500
Running Watts (Propane)
5900
6750
Starting Watts (Gasoline)
8200
9500
Starting Watts (Propane)
7400
8550
Rated Watts (Gasoline)
6500
Not available—
Rated Watts (Propane)
5900
Not available—
Peak Watts (Gasoline)
8200
Not available—
Peak Watts (Propane)
7400
Not available—
Runtime @ 50% Load (Gasoline)
17
11
Runtime @ 25% Load (Gasoline)
17
16
Runtime @ 25% Load (Propane)
9
8
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, Cast iron sleeve
Ducar OHV 4-stroke
Engine Displacement
322
420
Cylinder Sleeve
Cast iron sleeve
Not available—
Engine Oil Type
Not available—
SAE 10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
17
16
Runtime @ 50% Load (Gasoline)
17
11
Controls & display
Display Type
Digital data center
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Yes
Not available—
Included Accessories
Oil, funnel, tool kit, propane hose, and wheel kit
Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit
Warranty & identification
Residential Warranty
3
Not available—
Commercial Warranty
3
3
Part Number
GXS8200D
A074Z438
Additional specs
Summary
The A-iPower GXS8200D is a 6,500-watt dual-fuel generator built for users who need flexible fuel options and extended runtime. On gasoline, it delivers 8,200 starting watts and 6,500 running watts. On propane, it steps down to 7,400 starting watts and 5,900 running watts. This power level handles most household circuits, job site tools, and RV systems simultaneously. The dual-fuel design means you can switch between gasoline and propane depending on what you have on hand and which fuel offers better economics for your situation. The 6.3-gallon tank runs for 17 hours at 25 percent load on gasoline, which translates to weeks of occasional use before refueling becomes a concern. At 50 percent load, the runtime extends even further on propane. The 322cc OHV 4-stroke engine with cast iron sleeve is built for durability in outdoor conditions. This is a workhorse for homeowners, contractors, and RV owners who value fuel flexibility over absolute portability.
The Cummins Onan P9500df is a 7500-watt dual-fuel generator built for users who need sustained power across multiple scenarios. Running on either gasoline or propane, it delivers 9500 peak watts, enough to start large air conditioning units or power multiple job site tools simultaneously. The dual-fuel architecture means users can switch between fuel sources based on availability and storage constraints. Propane tanks store longer without degradation, while gasoline offers wider accessibility. This flexibility makes the unit valuable for both seasonal backup power and year-round work environments. The 194-pound weight and 27.3 x 26.3 x 26.3 inch footprint define this as a semi-portable unit. The included wheel kit enables movement across job sites or between storage locations, but this is not a grab-and-go machine. Users planning frequent relocation should factor in the logistical demands. The three-year commercial warranty covers manufacturing defects, giving buyers defined ownership support across the critical early-use period.
  • Most Powerful
    Cummins Onan P9500df
    7500W running
  • Quietest
    A-iPower GXS8200D
    68 dB
  • Longest Runtime
    Cummins Onan P9500df
    11h at 50% load
Where to buy
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A-iPower GXS8200D
Store links
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Cummins Onan P9500df
Store links
No links yet.
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