Westinghouse WGen20000 portable generator
$2,159.00
The westinghouse WGen20000 portable generator delivers massive gasoline-powered output for whole-home backup, featuring transfer switch readiness, rugged construction, and reliable performance for extended outages.
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|---|
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The westinghouse WGen20000 portable generator is an ultra-duty gasoline generator engineered for demanding backup power needs. Designed for large homes, job sites, and extended outages, it provides the capacity to run major appliances and multiple circuits at the same time. With transfer switch readiness, high-capacity outlets, and a powerful V-Twin engine, it offers dependable power when reliability matters most.
Features and Performance
Produces 28,000 peak watts and 20,000 running watts, suitable for whole-home backup
Powered by a 999cc OHV V-Twin engine built for sustained high-load operation
Runs up to 11 hours at 50 percent load on a large 17.2-gallon gasoline tank
Low total harmonic distortion under 5 percent, safe for electronics like computers and TVs
Multiple high-output outlets including 50A 14-50R and 30A L14-30R, all transfer switch ready
Copper windings improve power quality, cooling efficiency, and long-term durability
Push-button electric start with remote start for convenient operation
Digital readout displays voltage, frequency, and lifetime run hours
Automatic low oil shutdown and overload protection help protect the engine
Heavy-duty steel frame with lift brackets, wheels, and handles for mobility
Why You Should Buy It
If you need a 20000 watt portable generator for whole house backup, this model delivers serious gasoline-powered performance without fuel switching complexity. Its high output supports air conditioning systems, refrigerators, sump pumps, and more at the same time. Transfer switch readiness makes it easy to integrate into a home backup setup, while durable construction and proven reliability ensure confidence during long outages.
FAQ – Westinghouse WGen20000 Portable Generator
Can this generator power an entire home?
Yes, when connected through a transfer switch or interlock kit, it can support whole-home or large partial backup.
Is it safe for sensitive electronics?
The low harmonic distortion output provides stable power suitable for modern electronics.
What fuel does this generator use?
This model operates on gasoline only, delivering maximum output and straightforward operation.
Does it include built-in safety features?
It includes automatic low oil shutdown and overload protection to help protect the generator during use.
| Specification | Details |
|---|---|
| Gasoline Peak Watts | 28,000 |
| Gasoline Running Watts | 20,000 |
| AC Voltage | 120/240V |
| AC Frequency | 60 Hz |
| Total Harmonic Distortion | ≤5% |
| Engine Type | OHV V-Twin |
| Engine Displacement | 999cc |
| Fuel Tank Capacity | 17.2 gal (65 L) |
| Gasoline Runtime @ 50% Load | Up to 11 hours |
| Starter Type | Electric, Remote |
| Noise Level | 74 dBA |
| Transfer Switch Ready | Yes |
| GFCI Outlets | Yes |
| Grounding System | Bonded Neutral |
| Warranty (Residential) | 3-Year Limited |
| Warranty (Commercial) | 1-Year Limited |
| Product Dimensions | 38 × 35 × 40.4 in |
| Dry Weight | 540 lb |
| Shipping Weight | 573 lb |
Portable generator unit
Remote start key fob
Engine oil bottle
Oil funnel
Spark plug wrench
Quick-release handle pins
User manual




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