WGen12000 Generator
  • Up To 11 Hour Run Time @ 50% Load with Remote and Electric Start
  • Transfer and ST Switch Ready, Ideal for Large Home Backup Power
  • 15000 Peak Watts and 12000 Rated Watts
Where to buy

For your toughest power needs, the Westinghouse WGen12000 Portable Generator is an ultra duty generator engineered for strength. With 15,000 peak watts and 12,000 running watts, the WGen12000 is built with a brawny 713cc V-Twin OHV Westinghouse Engine to yield up to 11 hours of run time on a hefty 10.5 gallon (40 L) gas tank with a built-in fuel gauge. It features Push-Button Electric Start to make starting the WGen12000 effortless while the remote start key fob offers added ease from a distance. Transfer Switch Ready L14-30R and larger 14-50R outlets have the muscle to power all your major appliances like your air conditioner, refrigerator, and sump pump as well as lights or entertainment centers at the same time with a single cord hookup. It's easy to charge sensitive electronics because the WGen12000 produces less than 5%THD, allowing you to plug straight into its intuitive control panel. VFT Data Center displays real-time performance information to keep you up to date with regular maintenance. Constructed with a rugged steel frame with lift brackets, the WGen12000 is conveniently portable with an included set of heavy-duty never-flat wheels and handles to have your house, travel trailer, or job site powered in seconds. The WGen12000 is complete with a 3-Year Limited Warranty and Lifetime Technical Support backed by our nationwide customer service and support network.


  • Perfect as a backup power source for larger homes or a dependable source of portable power
  • 12,000 running watts, 15,000 peak watts
  • Runs for up to 11 hours on a 10.5 gal. fuel tank with built-in fuel gauge
  • Powered by the ultra duty 713cc OHV V-Twin Westinghouse Engine constructed with a durable cast iron sleeve
  • Push-Button Electric Start pairs with a key fob for seamless Remote Start
  • Weighing 352 lb. with as low as 74 dBA operating volume
  • Safely powers sensitive electronics such as laptop computers, cell phones, and more with less than 5% THD
  • (2) 5-20R household duplex outlets, (1) L5-30R, (1) Transfer Switch Ready L14-30R 120/240-Volt twist-lock, (1) 120/240V 14-50R, and (2) USB ports with rubber outlet covers
  • VFT display gives you real time updates with the voltage output, frequency, and lifetime hours
  • Smart Idle automatically lowers idle speed with no load to enhance fuel efficiency and extend run times
  • Safe and convenient with automatic low oil shutdown, automatic voltage regulation and overload protection
  • All Westinghouse portable generators are functionally tested in the factory and may contain minimum residual oil and/or fuel odor


Oil capacity 51.2 oz. (1.6 qt)
Engine oil type 10W30
Carbon monoxide (co) sensor No
Overload protection Yes
Automatic low oil shutdown Yes
Grounding system Bonded Neutral
Battery included Yes
Warranty (residential) 3 Year Limited
Carb compliant Yes
Product dimensions 34L x 31W x 35H in.
Shipping weight 403.4 lb. (183 kg)
Warranty (commercial) 1 Year Limited
Packaging dimensions 35.4L x 24.4W x 33.5H in.
Engine type OHV V-Twin
Choke type Automatic
Engine displacement 713cc
Starter type Electric, Remote
Fuel gauge Yes
Noise level 74 dBA
Rv ready Yes
Included accessories Oil Bottle, Oil Funnel, Spark Plug Wrench, Quick-Release Pins, Remote, 12V Battery Cable
Transfer switch ready Yes
Gfci outlets No
Outlet covers Yes
Ac frequency 60 Hz
Outlets 2 Duplex 120V 5-20R
1 120V L5-30
1 120/240V L14-30R
1 120/240V 14-50R
2 USB ports
ST Switch
Ac voltage 120/240V
Gasoline peak amps 63A - 240V
125A - 120V
Fuel tank capacity 10.5 gal (40 L)
Gasoline running amps 50A - 240V
100A - 120V
Gasoline running watts 12000
Gasoline peak watts 15000
Dry unit weight 352 lb. (160 kg)
Upc 853544008274
Total harmonic distortion ≤5%
Display type Digital Readout
Gasoline run time @ 50% 11 hrs.
Smart idle Yes
St switch ready Yes

Owners Manual