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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.

  • DuroStar DS11000DX
  • Westinghouse WGen9500DF
  • Model DS11000DX
    Model DS11000DX

    DuroStar 9,000W Dual-Fuel Generator

    9000W
    Running
    74 dB
    Noise
    View details
  • Model WGen9500DF
    Model WGen9500DF

    Westinghouse 9,500W Dual-Fuel Generator

    9500W
    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
SpecificationDuroStar DS11000DXWestinghouse WGen9500DF
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
9000 W
Winner: Winner: 9500 W
Starting watts
11000 W
Winner: Winner: 12500 W
Noise (lower limit)
Winner: Winner: 74 dB
Winner: Winner: 74 dB
Weight
230 lbs
Winner: Winner: 211 lbs
Run time @50% load
Winner: Winner: 9 h
8 h
Run time @25% load
19 h
12 h
Fuel tank
8.3 gal
6.6 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29 x 30 x 26 in
27.2 x 26.1 x 26.5
Electrical
Voltage (AC)
120/240V 60 Hz
120/240V 60 Hz
Voltage (DC)
Not available
Not available
GFCI outletsYesYes
Covered outletsNoYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
457 cc OHV 4-stroke, cast iron sleeve
Westinghouse OHV 4-stroke, cast iron sleeve
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric, Remote
Warranty
Warranty
5 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
9000 W
9500 W
Starting watts
11000 W
12500 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
8 h
Run time @25% load
19 h
12 h
PropaneNot availableNot available
Running watts
8550 W
8500 W
Starting watts
10450 W
11200 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
3.5 h
Not available
Run time @25% load
7 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
true
UPC
811640016722
853544008298
Core / High-priority specs
Running Watts (Gasoline)
9000
9500
Running Watts (Propane)
8550
8500
Starting Watts (Gasoline)
11000
12500
Starting Watts (Propane)
10450
11200
Runtime @ 50% Load (Gasoline)
9
8
Runtime @ 50% Load (Propane)
3.5
Not available
Runtime @ 25% Load (Gasoline)
19
12
Runtime @ 25% Load (Propane)
7
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
OHV 4-stroke, cast iron sleeve
Engine Displacement
457
457
Cylinder Sleeve
cast iron sleeve
Cast iron sleeve
Alternator Winding Material
Copper windings
Not available
Engine Oil Type
10W-30
SAE 10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
19
12
Runtime @ 50% Load (Gasoline)
9
8
Runtime @ 50% Load (Propane)
3.5
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Mobility Components
Wheel kit
Yes
Included Accessories
Funnel, tool kit, propane hose, battery, and wheel kit
Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit
Warranty & identification
Residential Warranty
Not available
3
Commercial Warranty
Not available
3
Additional specs
Summary
The DuroStar DS11000DX is a 9,000-watt dual fuel generator built around a 457cc OHV engine with cast iron sleeves. This wattage places it squarely in the home backup and light job site category. On gasoline, it runs 9 hours at half load and 19 hours at quarter load. On propane, runtime drops to 3.5 hours at half load and 7 hours at quarter load, making gasoline the practical choice for extended outages. The dual fuel option gives users flexibility when propane is more accessible or economical, though gasoline delivers longer operating windows per tank. At 74 dB, the noise level sits in the moderate range for this power class, meaning it will be audible but not prohibitively loud in residential settings. The 8.3-gallon fuel tank combined with the quarter-load runtime means users can stretch a single fill to nearly a full day of light operation.
The Westinghouse WGen9500DF is a dual fuel portable generator capable of producing up to 12,500 peak watts and 9,500 running watts on gasoline, and 11,200 peak watts and 8,500 running watts on propane. It features a 457cc 4-Stroke OHV engine, push-button electric start with remote key fob, and a VFT Data Center displaying real-time information. Designed for home backup, job sites, or recreational use, it offers up to 12 hours of run time on a 6.6-gallon fuel tank.
  • Most Powerful
    Westinghouse WGen9500DF
    9500W running
  • Quietest
    DuroStar DS11000DX
    74 dB
  • Longest Runtime
    DuroStar DS11000DX
    9h at 50% load
Where to buy
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DuroStar DS11000DX
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Westinghouse WGen9500DF
Store links
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