Skip to content
Skip to main content
Westinghouse WGen9500DFc EFI vs DuroMax XP15000HX

Westinghouse WGen9500DFc EFI vs DuroMax XP15000HX

Comparing the Westinghouse WGen9500DFc EFI and DuroMax XP15000HX dual-fuel generators. See which high-wattage model fits your home backup or job site needs.

  • DuroMax XP15000HX
  • Westinghouse WGen9500DFc EFI

Comparison Overview

The biggest difference between these two dual-fuel generators is raw power. The DuroMax XP15000HX delivers 12,000 running watts and 15,000 starting watts, while the Westinghouse WGen9500DFc EFI produces 9,500 running watts and 12,500 starting watts. That 2,500-watt gap in running output is significant if you need to power multiple large appliances or heavy equipment simultaneously.

The Westinghouse fights back with meaningful advantages in portability and efficiency. At 221 pounds, it's over 120 pounds lighter than the 345-pound DuroMax, making it far easier to move around. Its EFI (Electronic Fuel Injection) system helps optimize fuel delivery, and it runs noticeably quieter at 74 dB compared to the DuroMax's 78 dB. The DuroMax counters with a longer 5-year warranty versus the Westinghouse's 3-year coverage, and it offers superior runtime of 17.9 hours at 25% load compared to 12 hours for the Westinghouse.

Buyers who need maximum wattage for whole-home backup or demanding job sites will lean toward the DuroMax. Those who want a more manageable, fuel-efficient generator with enough power for most residential outages will find the Westinghouse a compelling option.

Key takeaways

  • DuroMax XP15000HX produces 12,000 running watts versus the Westinghouse's 9,500 running watts
  • Westinghouse WGen9500DFc EFI weighs 221 lbs, over 120 lbs lighter than the 345 lb DuroMax
  • Both generators offer dual-fuel flexibility, running on gasoline or propane
  • DuroMax runs 17.9 hours at 25% load compared to the Westinghouse's 12 hours
  • Westinghouse operates at 74 dB, four decibels quieter than the DuroMax's 78 dB
  • DuroMax includes a 5-year warranty while Westinghouse offers 3 years of coverage

Best use cases

Choose the Westinghouse WGen9500DFc EFI if you want a powerful but still reasonably portable dual-fuel generator for home emergency backup. Its 9,500 running watts can handle essentials like a refrigerator, sump pump, window AC units, lights, and several smaller devices at the same time. The EFI system means more consistent fuel efficiency, and at 221 pounds, it's realistic for one or two people to wheel into position. The 74 dB noise level, while not quiet by any means, is noticeably less intrusive than the DuroMax during extended outages when you and your neighbors are already stressed. If you live in a moderate-sized home and don't need to run central air conditioning or multiple high-draw tools simultaneously, this generator covers your bases without the extra bulk.

Choose the DuroMax XP15000HX if your power demands are serious. With 12,000 running watts, this unit can support a larger home's central HVAC system, electric water heater, and still have headroom for other appliances. It's a strong pick for job sites where you're running power-hungry tools like welders, compressors, or table saws. The 17.9-hour runtime at 25% load means fewer refueling interruptions during long outages, and the 5-year warranty provides extra peace of mind for a machine you're investing heavily in. The tradeoff is real, though. At 345 pounds, this generator is a commitment to move, and the 78 dB output is loud enough that placement matters. If you have a permanent or semi-permanent spot for it and need the extra capacity, the DuroMax delivers.

Verdict & recommendation

If your priority is maximum power output, longer runtime, and extended warranty protection, the DuroMax XP15000HX is the stronger choice, especially for larger homes or professional job sites. If you value a lighter, quieter, and more fuel-efficient generator that still provides substantial wattage for most residential needs, the Westinghouse WGen9500DFc EFI earns its place. Both are capable dual-fuel machines that give you the flexibility of gasoline and propane.

The real deciding factor comes down to how much power you actually need. Running a quick load calculation for your home or work site will tell you whether 9,500 running watts is enough or whether you genuinely need the DuroMax's 12,000. Buying more capacity than necessary means carrying extra weight and noise you could have avoided.

Last updated March 15, 2026

  • Model XP15000HX
    Model XP15000HX

    DuroMax 12,000W Dual-Fuel Generator

    12000W
    Running
    78 dB
    Noise
    View details
  • Model WGen9500DFc EFI
    Model WGen9500DFc EFI

    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
SpecificationDuroMax XP15000HXWestinghouse WGen9500DFc EFI
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
Winner: Winner: 12000 W
9500 W
Starting watts
Winner: Winner: 15000 W
12500 W
Noise (lower limit)
78 dB
Winner: Winner: 74 dB
Weight
345 lbs
Winner: Winner: 221 lbs
Run time @50% load
Winner: Winner: 12 h
Not available
Run time @25% load
17.9 h
12 h
Fuel tank
13.2 gal
6.6 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
36 x 33.2 x 32
27.3 x 20.6 x 22.5
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
5
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
12 %
23 %
Engine
Engine
670 cc OHV 4-stroke, cast iron sleeve
457 cc OHV 4-stroke, cast iron sleeve.
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil, Electric, Remote
Warranty
Warranty
5 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
12000 W
9500 W
Starting watts
15000 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
12 h
10 h
Run time @25% load
17.9 h
Not available
PropaneNot availableNot available
Running watts
11400 W
8500 W
Starting watts
14250 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
2.8 h
8.7 h
Run time @25% load
4.1 h
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA
CARB, EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
true
UPC
811640016845
850060639036
Core / High-priority specs
Running Watts (Gasoline)
12000
9500
Running Watts (Propane)
11400
8500
Starting Watts (Gasoline)
15000
12500
Starting Watts (Propane)
14250
11200
Runtime @ 50% Load (Gasoline)
12
10
Runtime @ 50% Load (Propane)
2.8
8.7
Runtime @ 25% Load (Gasoline)
17.9
Not available
Runtime @ 25% Load (Propane)
4.1
Not available
AC Outlet Types
AC outlets5x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
670 cc OHV 4-stroke
457 cc OHV 4-stroke, cast iron sleeve
Engine Displacement
670
457
Cylinder Sleeve
cast iron sleeve
cast iron sleeve
Alternator Winding Material
Copper
Not available
Engine Oil Type
10W-30
SAE 10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
17.9
Not available
Runtime @ 50% Load (Gasoline)
12
10
Runtime @ 50% Load (Propane)
2.8
8.7
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
Starting Components
Recoil, Electric, Remote
Not available
Included Accessories
Funnel, tool kit, key fob, propane hose, battery, and wheel kit
Oil, funnel, tool kit, key fob, battery charger, propane hose, battery, wheel kit
Warranty & identification
Commercial Warranty
5
3
Additional specs
Summary
The DuroMax XP15000HX is a 12,000-watt dual-fuel generator built for users who need sustained power across extended outages or job sites. Running on gasoline or propane, this unit delivers 15,000 peak watts and can handle the simultaneous draw of multiple heavy appliances, air conditioning units, or power tools. A 13.2-gallon fuel tank stretches runtime to 17.9 hours at quarter load on gasoline, meaning users refuel once every few days during moderate use rather than every shift. The dual-fuel flexibility matters in practice: when gasoline prices spike or supplies tighten, switching to propane keeps the generator running without downtime. This is a stationary power solution with wheels, not a grab-and-go portable.
The Westinghouse WGen9500DFc EFI is a dual fuel portable generator that offers 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 electronic fuel injection, a CO sensor, and is transfer switch ready, making it ideal for home backup power.
  • Most Powerful
    DuroMax XP15000HX
    12000W running
  • Quietest
    Westinghouse WGen9500DFc EFI
    74 dB
  • Longest Runtime
    DuroMax XP15000HX
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
DuroMax XP15000HX
Store links
No links yet.
Westinghouse WGen9500DFc EFI
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.