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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.

  • Cummins Onan P9500df
  • Firman P06701
  • Model Onan P9500df
    Model Onan P9500df

    Cummins 7,500W Dual-Fuel Generator

    7500W
    Running
    74 dB
    Noise
    View details
  • Model P06701
    Model P06701

    Firman 6,700W Gas Generator

    6700W
    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
SpecificationCummins Onan P9500dfFirman P06701
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 7500 W
6700 W
Starting watts
Winner: Winner: 9500 W
8350 W
Noise (lower limit)
Winner: Winner: 74 dB
Winner: Winner: 74 dB
Weight
194 lbs
Winner: Winner: 178 lbs
Run time @50% load
11 h
Winner: Winner: 12 h
Run time @25% load
16 h
Not available—
Fuel tank
6.6 gal
8 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
27.3 x 26.3 x 26.3
28.4 x 27.5 x 26.8
Electrical
Voltage (AC)
120/240
120/240V 60 Hz
Voltage (DC)
Not available—
Not available—
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
23 %
Not available—
Engine
Engine
420 cc Ducar OHV 4-stroke
389 cc OHV 4-stroke, cast iron sleeve
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
7500 W
6700 W
Starting watts
9500 W
8350 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
11 h
12 h
Run time @25% load
16 h
Not available—
PropaneNot available—Not available—
Running watts
6750 W
Not available—
Starting watts
8550 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
8 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
true
Compliance
EPA
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
true
UPC
690781007932
840876167014
Core / High-priority specs
Running Watts (Gasoline)
7500
6700
Running Watts (Propane)
6750
Not available—
Starting Watts (Gasoline)
9500
8350
Starting Watts (Propane)
8550
Not available—
Runtime @ 50% Load (Gasoline)
11
12
Runtime @ 25% Load (Gasoline)
16
Not available—
Runtime @ 25% Load (Propane)
8
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Ducar OHV 4-stroke
OHV 4-stroke, cast iron sleeve
Engine Displacement
420
389
Cylinder Sleeve
Not available—
cast iron sleeve
Engine Oil Type
SAE 10W-30
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
Not available—
Runtime @ 50% Load (Gasoline)
11
12
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Not available—
Recoil
Included Accessories
Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit
Oil, funnel, tool kit, cover, and wheel kit
Warranty & identification
Commercial Warranty
3
3
Part Number
A074Z438
Not available—
Additional specs
Summary
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.
The Firman P06701 is a 6700-watt gasoline generator built around a 389cc OHV 4-stroke engine with a cast iron sleeve. This wattage class powers essential home appliances, job site tools, and outdoor event equipment simultaneously. The 8-gallon fuel tank stretches runtime to 12 hours at half load, meaning users refuel once per day under moderate use rather than every few hours. At 74 decibels, the noise level matches a vacuum cleaner, loud enough to require distance from neighbors but typical for this power class. The recoil starting system is mechanically simple and reliable, though it demands physical effort on cold mornings or after storage.
  • Most Powerful
    Cummins Onan P9500df
    7500W running
  • Quietest
    Cummins Onan P9500df
    74 dB
  • Longest Runtime
    Firman P06701
    12h at 50% load
Where to buy
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Cummins Onan P9500df
Store links
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Firman P06701
Store links
No links yet.
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