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The Verdict

The Westinghouse WGen20000TFc is a high-capacity bridge between standard portable units and expensive permanent standby systems. Its primary value lies in its tri-fuel versatility, allowing you to switch between gasoline, propane, or a continuous natural gas supply for indefinite run times during extended outages. With 28,000 peak watts and a dedicated 125A terminal block for hardwiring, this unit provides enough overhead to power multiple central A/C units and heavy appliances simultaneously. Unlike most high-output portables, it maintains low Total Harmonic Distortion (THD), making it safe for sensitive electronics and high-end appliances.

The trade-offs are physical and logistical: the unit is exceptionally heavy (approaching 500 lbs), making it difficult to maneuver on soft ground despite the wheels, and it requires a 1-inch natural gas line to achieve its rated performance on that fuel. It is also significantly louder than smaller inverter models. However, when weighed against the $15,000+ cost of a stationary home standby installation, these drawbacks are negligible. The WGen20000TFc is a strategic buy for homeowners seeking total power independence and stationary-grade output at a fraction of the traditional price.

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Rating
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ModelWGen20000TFcWGen20000cW34NGH15iGen12000TFciGen12000DFc201423GM 15000ET
ColorBlackBlueGray————
Fuel TypeTri-Fuel, Gasoline, Propane, Natural GasGasoline—Tri-Fuel, Gasoline, Propane, Natural GasDual-Fuel, Gasoline, PropaneTri-Fuel, Natural Gas, Propane, GasolineTri-Fuel, Gasoline, Propane, Natural Gas
FeaturesTransfer Switch Ready, Low Oil Shutoff, Pure Sine Output, Hour MeterTransfer Switch Ready, CO Shutdown Sensor, Low Oil Shutoff, Fuel Gauge, Pure Sine Output, Hour Meter—Low Oil Shutoff, Parallel Ready, CO Shutdown Sensor, Transfer Switch ReadyLow Oil Shutoff, Fuel Gauge, Pure Sine Output, Parallel Ready, CO Shutdown Sensor, Hour Meter, Transfer Switch ReadyCO Shutdown Sensor, Pure Sine OutputCO Shutdown Sensor, Transfer Switch Ready
Starter TypeRemote Electric Starter, Electric StarterRemote Electric Starter, Electric Starter—Remote Electric Starter, Electric StarterRemote Electric Starter, Electric Starter, Recoil StarterRemote Electric Starter, Electric StarterRemote Electric Starter, Electric Starter, Automatic Starter, Recoil Starter
TypeStandbyStandby—InverterInverterInverterConventional
Receptacles120V/240V 50A (14-50R), 120V/240V 30A (L14-30R), 120V 30A (TT-30R)120V/240V 50A (14-50R), 120V/240V 30A (L14-30R)—120V/240V 50A (14-50R), 120V/240V 30A (L14-30R)120V/240V 30A (L14-30R), 120V/240V 50A (14-50R)120V/240V 30A (L14-30R), 12V DC120V/240V 50A (14-50R), 12V DC
BrandWestinghouseWestinghouse—WestinghouseWestinghouseChampionGenmax
UseHome Backup, Jobsite, Camping, TailgatingHome Backup, Jobsite, Camping—Home Backup, RV Ready, Camping, TailgatingHome BackupHome Backup, Camping, TailgatingHome Backup, Jobsite
Portability FeaturesWheels, Folding HandlesCarrying Handles—WheelsWheels, Folding HandlesWheels—

About this product

  • Automatic Home Backup Made Portable. Pair with the Westinghouse WATS200 Automatic Transfer Switch for automatic backup power. This revolutionary, first-of-its-kind technology combines standby convenience with portable versatility. Exclusive to Westinghouse. Switch sold separately.
  • Built for Longer Engine Life. The powerful 999cc engine features full-pressure lubrication that delivers oil to critical components, reducing friction and wear. An automotive-style oil filter captures abrasive particles and contaminants for cleaner oil and long-lasting engine performance.
  • Power for sensitive electronics. Less than 5% THD delivers cleaner power for phones, computers and TVs. Copper windings help it run cooler and last longer. Push-button and remote start simplify startup; a 17.2-gallon gas tank supports extended operation.
  • Fuel flexibility. Choose gasoline, propane or natural gas. Delivers 20,000 running/28,000 peak watts on gasoline. 50A and 30A outlets pair well with an interlock kit, manual transfer switch or Westinghouse WATS200 ATS system for home backup (sold separately).
  • Built-in safety and support. Automatic low-oil shutdown helps protect the engine, while the CO sensor shuts down the generator when elevated carbon monoxide is detected. Backed by a 3-year limited residential warranty and lifetime technical support.

Specifications

Brand
Westinghouse
Model
WGen20000TFc
Part Number
20027
Running Watts
20000 W
Type
Standby
Brand
Westinghouse
Portability
Wheels, Folding Handles
Receptacles
120V/240V 50A (14-50R), 120V/240V 30A (L14-30R), 120V 30A (TT-30R)
Fuel
Tri-Fuel, Gasoline, Propane, Natural Gas
Features
Transfer Switch Ready, Low Oil Shutoff, Pure Sine Output, Hour Meter
Starter
Remote Electric Starter, Electric Starter
Use
Home Backup, Jobsite, Camping, Tailgating
Starting Watts
28000 W
Width
35 inches
Height
40.4 inches
Depth
38 inches
Weight
557 Pounds
Colour
Black
Warranty
3 Year Limited Warranty
Manufacturer
Westinghouse Outdoor Power Equipment
UPC
850032657785
GTIN
00850032657785

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