Westinghouse WPX3800 - 3800 PSI 3.6 GPM 274cc Gas Pressure Washer
The Westinghouse WPX3800 is a gas-powered pressure washer offering a maximum water pressure of 3800 PSI and flow of 3.6 GPM. (Read full specs)
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Description
Zoom on the Westinghouse WPX3800
The Westinghouse WPX3800 is a heavy duty, commercial pressure washer, that provides its users with an all-around versatile cleaning experience, and enables:
- pinpoint spot cleaning of hard, unpainted surfaces, accessing high areas, and successfully removing stubborn stains
- overall cleaning of hard surfaces, washing vehicles, and prepping surfaces for painting
- mild cleaning for delicate surfaces, and low-pressure cleaning for broader areas
- utilizing cleaning solutions, and rinsing surfaces clean
Its power characteristics and design, its main features and all its additional features are presented ahead.
Power
Its brass triplex pump, which utilizes a powerful 274cc engine, may deliver a pressure of up to 3800 PSI (almost 63 times more than a standard garden hose) and a flow of up to 3.6 GPM. Corresponding to these values is a cleaning power of 13680 Cleaning Units.
To start the engine of this gas-powered washer, users employ the familiar pull-start technique.
Fuel for the pressure washer is housed in a tank capable of holding up to 1.32 gallon of gasoline.
Design & Handling
The wheelbarrow design of the Westinghouse WPX3800 offers enhanced mobility and stability, making it ideal for navigating uneven terrain and ensuring steady operation during heavy-duty cleaning tasks. The steel tubing frame's robustness ensures the assembly's longevity, maintaining stability and protecting internal components, even in the harshest environments. The reversible handle offers further versatility, as its different positions make the unit less bulky when stored.
At 91 lbs, this unit's substantial weight makes it quite a challenge for users to lift and maneuver, particularly on uneven surfaces where its heft can become even more apparent. Its 274cc engine, the triplex pump and steel tubing frame are mainly responsible for its heavy weight. However, the incorporation of two 10" never-flat wheels makes navigating the WPX3800 less cumbersome, even on uneven terrain.
Main Features
The Westinghouse WPX3800 comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.
- Soap injection: The pressure washer features a 0.8 gal tank for detergent storage. The Westinghouse WPX3800 includes an automatic soap dilution mechanism, allowing detergent to be diluted to the ratio of 12:1 with ease. Upon attaching a soap nozzle, the pressure washer seamlessly integrates the detergent into the water flow.
- Pressure hose: When not in use, the unit allows for tidy storage of the included 35 ft ⌀5/16" high-pressure hose using a set of convenient hooks, ensuring convenient organization.
- Spray gun and wand: Both the classic ergonomic spray gun and its steel wand may be conveniently stored in a side hook.
- Nozzles: The table below shows you the 5 included nozzles and the surfaces they're the most appropriate for.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Important note: The shapes of the depicted nozzles serve for illustration purposes only and may vary. Symbols used include a for 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
- Onboard storage: The Westinghouse WPX3800 allows you to be always fully prepared, as it features a handy storage area, where nozzles and accessories can be stored.
- Safety: Safety of operation is enhanced by a thermal relief valve (which helps to prevent internal pump damage) and a trigger lock mechanism (which prevents accidental operation).
- Accessories: Included with the Westinghouse WPX3800 are also the owner's manual (opens in a new tab) and some basic documentation to get you promptly started, along with several accessories, such as nozzle cleaner, spray gun, wand, pressure hose, funnel and oil.
The Westinghouse WPX3800's performance versus other pressure washers
The following charts are provided to give you an idea of how the key specs of the Westinghouse WPX3800 compare to similarly priced pressure washers.
- With 3800 PSI, the Westinghouse WPX3800 ranks as one that can reach an above average pressure, amongst the gas-powered products that cost between $600 and $700. If you're seeking the strongest water stream, look no further than the Briggs & Stratton 20507, which delivers an impressive 4000 PSI.
- With a maximum GPM of 3.6 (gallons per minute), this washer belongs to the top in terms of water flow, in its respective price range. If you’re after the highest rinsing efficiency, one of the units with the highest water flow in the current price range is the Briggs & Stratton 20507, that can deliver up to 4 GPM.
- Reaching up to 13680 Cleaning Units (PSI X GPM), the WPX3800 is one of the more efficient amongst its similarly priced peers. If the highest overall cleaning power is your top priority, the Briggs & Stratton 20507, which can reach up to 16000 Cleaning Units, is one of the most efficient of the devices in the current price range.
Price comparison
As you can see from these interactive charts, when compared to other gas-powered washers between 13500 and 14000 Cleaning Units, the Westinghouse WPX3800 is on the cheap side of the price range.
It can therefore be a really good buy if you're looking to acquire a budget pressure washer.
The bottom line
- Inexpensive
- Triplex pump
- Designed to be stable
- Good range of nozzles included
- Automatic detergent dilution
- Onboard storage
- Several security features
- High PSI for the price
- High GPM for the price
- High CU for the price
The Westinghouse WPX3800 doesn't have any notably low specs.
Features and Specifications
| Fuel | Gas-Powered |
|---|---|
| Engine | 274cc OHV 4-stroke |
| Pump | Triplex |
| Water | Cold (104°F max.) |
| PSI | 3800 |
| GPM | 3.6 |
| Cleaning Units | 13680 |
| Frame | Steel tubing |
|---|---|
| Pump material | Brass |
| Handling | Wheelbarrow |
| Wheels | 2 wheels, ⌀10", never flat |
| Weight | 91 lbs |
| Dimensions | Approx. 34 x 21 x 28 in (L x W x H) |
| Hose storage | Hooks |
| Soap injection | Yes |
|---|---|
| Soap tank | 0.8 gal |
| Soap dilution | 12:1 |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 35 ft, ⌀5/16 |
| Security | Trigger lock and thermal relief valve |
|---|---|
| Emissions | CARB, EPA |
| Included accessories | Oil, funnel, nozzle cleaner, steel wand, spray gun, high pressure hose, 5 nozzles |
| Warranty | 3 years |
| UPC | 850032657679 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
About Westinghouse
Since its founding in 1886 by George Westinghouse, the Westinghouse brand has become synonymous with electric power. With a wide-ranging product line supporting heavy industry, municipal power grids, and home appliances, the company has maintained innovation as one of its core values. Westinghouse has several partnerships and controlling stakes in media enterprises and manufacturing conglomerates worldwide, including Viacom and Electrolux. Products for the homeowner and contractor marketed under the Westinghouse brand are produced in facilities worldwide, and include outdoor power equipment such as pressure washers and portable generators.
Warranty Information
The Westinghouse WPX3800 is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Westinghouse pressure washers, please consult Westinghouse's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-855-944-3571.

