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Figuring out what you need can be challenging! Email for help.
Figuring out what you need can be challenging! Email for help.

Westinghouse 20000 Watt Generator

An extreme heavy duty gas generator. With a capacity of 28,000 peak watts, this monster of a unit is ready for all your commercial backup power needs. This unit is more than enough to provide backup power even for large homes.


  • Up To 11 Hour Run Time with Electric Start
  • Transfer Switch Ready, Ideal for Large Home Backup Power
  • 28000 Peak Watts and 20000 Rated Watts

For your toughest power needs, the Westinghouse WGen20000 Portable Generator is an ultra-duty generator engineered for strength. With 28,000 peak-Watt and 20,000 running-Watt, the WGen20000 is built with a brawny 999 cc V-Twin OHV Westinghouse Engine to yield up to 11-hours of run time on a hefty 17.17 Gal. (65 L) gas tank with a built-in fuel gauge. It features Electric Start to make starting the WGen20000 effortless. 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. With outlets that produce less than 5% THD, the WGen20000 allows you to safely and easily charge sensitive electronics directly from the control panel without the need for additional accessories. 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 WGen20000 is conveniently portable with an included set of heavy-duty wheels and handles to have your house, travel trailer, or job site powered in-seconds. The WGen20000 is complete with a 3-year Limited Warranty and Lifetime Technical Support backed by our nationwide customer service and support network.


  • 20,000 Running Watts and 28,000 Peak Watts; Easy-Access Start Panel with Keyed Electric Start, Choke Knob, and Fuel Control Valve; Up to 17 Hours of Run Time at 25% load on a 17 Gallon Fuel Tank With Fuel Gauge
  • Featuring Four GFCI 120V 5–20R Standard Household Outlets, Two 50A 120/240V 14-50R Outlets, Two 30A 120/240V L14-30R Outlets, and One 30A 120V L5-30R Outlet; All Outlets Have Rubber Covers for Added Safety
  • Powered by a Heavy Duty 999cc Westinghouse V-Twin OHV Engine Featuring a Cast Iron Sleeve, Reinforced Steel Handles with Quick-Release Pins, Automatic Low Oil Shutdown, Idle Control, and Digital Readout Displaying Lifetime Run Hours, Volts, and Frequency.
  • Plug-and-Play: Oil, Funnel, Setup Guide, and Manual to Get You Started Right Out of the Box
  • All Westinghouse Portable Generators are Functionally Tested in the Factory and May Contain Minimum Residual Oil and/or Fuel Odor; EPA Compliant; Backed by 3-Year Limited Service, Labor, and Parts Coverage with Nationwide Customer Service Network

Please Note: This machine ships on a 40" x 27" x 42.5" Skid and weighs 575 pounds. If you don't have a forklift or skid steer, it will require a tailgate at delivery to unload. No matter your situation, we will be able to find a freight option for you. Westinghouse generators do not qualify for free freight. Please send an email to prior to ordering. 

Important: Cette générateur son plus de 500 livres, et n'es pas inclues dans la progamme de livraison gratuite. S'il vous plait envoyer une e-mail à avant de commander.

Customer Reviews

Based on 5 reviews
TRS Building Envelope Corp.
the Beast

Just received the Westinghouse 20,000 watt gen-set for our commercial roofing operations....its a beast of a unit, can run two robowelders and multiple hand welders at the same time. Seems very well built, only had it this week, we shall see how it holds up but seems great. Could do without the startup procedure and requirement to read how to start it...why cant things just be simple like they have always been? why complicate something like start up?

Gerard Ranger
28000kw gas generator

Have not received product shipment yet 14 days after scheduled delivery 27 July 2023. Now scheduled by FedEx for Tuesday tomorrow August 8 2023. Is that the delivery service I paid $800 for? My business cannot survive with 2 week delays in deliver!!!!!!!

Generator 20Kw

Great service, very helpful staff. Very happy with my experience dealing with WeldReady. Order was placed and product was shipped to me faster than I expected. Tracking app was not accurate but they gave a proper tracking number from the courier which was.

Have yet to try the generator itself as I have not yet lost power.

derek cale
20000 watt gas generator

everything was perfect.. From ordering on line, customer service answered all my questions, generator showed up quickly and was in perfect working order... super happy on this whole experience.... other than... the tracking app didn't work so great... but the delivery company did awesome getting it here and then here again because i wasn't here the first time because the tracking app didn't update me that it had been shipped.... all round... great great great.... looking forward to the next power outage so i can put it to work

Nancy Lachance

Super service, fast delivery

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