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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.
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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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






