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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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Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold (104°F max.)
PSI3800
GPM3.6
Cleaning Units13680
Engine274cc OHV 4-stroke
PumpTriplex
Pump materialBrass
FrameSteel tubing
Soap injectionYes
Soap tank0.8 gal
Soap dilution12:1
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose35 ft, ⌀5/16
Hose storageHooks
Dimensions
(L x W x H)
Approx. 34 x 21 x 28 in
Weight91 lbs
Wheels2 wheels, ⌀10"
Included accessoriesOil, funnel, nozzle cleaner, steel wand, spray gun, high pressure hose, 5 nozzles
SecurityTrigger lock and thermal relief valve
EmissionsCARB, EPA
Warranty3 years
UPC850032657679

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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Description

Zoom on the Westinghouse WPX3800

In a nutshell, the Westinghouse WPX3800 is a heavy duty, commercial pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:

  • spot cleaning of hard, unpainted surfaces and high-reach cleaning
  • intense cleaning of tough, paintless surfaces
  • cleaning of painted or delicate surfaces
  • application of detergent and cleaning solutions

Ahead are presented its power characteristics and design, its main features and any other additional features.

Power

The Westinghouse WPX3800 in use

The Westinghouse WPX3800

The Westinghouse WPX3800's brass triplex pump, powered by an impressive 274cc engine, can provide a pressure of up to 3800 PSI (approximately 63 times more than a standard garden hose) and a flow of up to 3.6 GPM (values claimed by the manufacturer). The Westinghouse WPX3800 thus has a cleaning power of 13680 Cleaning Units.

The engine of this gas-powered pressure washer gets started by a classic pull-start mechanism.

Gasoline is stored in a fuel tank with a maximum capacity of 1.32 gallon.

Design & Handling

The wheelbarrow design of the Westinghouse WPX3800 grants mobility and stability to the unit. Its sturdy steel tubing frame provides longevity to the assembly. The reversible handle offers further versatility, as its different positions make the unit less bulky when stored.

At 91 lbs, we can't really say that the unit is a lightweight, and manually lifting or transporting it could be a challenge. A key role in its final weight is played by its 274cc engine, the triplex pump and steel tubing frame. However, the device’s two 10" wheels play a key role in its maneuverability, as they allow it to be manipulated smoothly.

Main Features

The Westinghouse WPX3800's package includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, with a more detailed description below.

  • Soap injection: Detergent is stored in a 0.8 gal tank. The detergent is diluted with a 12:1 ratio by the Westinghouse WPX3800's automatic soap dilution mechanism. The detergent will be added automatically to the water when a soap nozzle is attached.
  • Pressure hose: A neat storage for the included 35 ft ⌀5/16" high-pressure hose is facilitated by a set of convenient hooks.
  • Spray gun and wand: A side hook enables you to easily store the included classic ergonomic spray gun and its steel wand.
  • Nozzles: The following table illustrates the 5 included nozzles, along with the surfaces which they are the most suitable for.


15°

25°

40°

Soap
Concrete, brick, masonryUse with cautionSuitableSuitableSuitableSuitable
Siding, gutters, houseNot recommendedUse with cautionUse with cautionSuitableSuitable
Fencing, deck, patioNot recommendedUse with cautionUse with cautionSuitableSuitable
Lawn equipment, boat, RVNot recommendedUse with cautionUse with cautionUse with cautionSuitable

Note: The shape of the nozzles above is for illustration purposes only and may differ.
Red cross: Not recommended. Green check: Suitable. Orange check: Use with caution.

Other Features

The specs of the Westinghouse WPX3800

The Westinghouse WPX3800

  • Onboard storage: The Westinghouse WPX3800 features a handy storage area, which allows you to neatly store nozzles and accessories and be always prepared by having everything needed at hand.
  • Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation) and a thermal relief valve (which helps to prevent internal pump damage).
  • Accessories: Besides the usual owner's manual (opens in a new tab) and documentation to get you promptly started, the Westinghouse WPX3800 comes with pressure hose, nozzle cleaner, oil, wand, spray gun and funnel.
  • Emissions: The Westinghouse WPX3800 is EPA-approved and CARB-compliant. Thus, selling and purchasing this pressure washer is allowed in each of the 50 states, including California.

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.

  • The Westinghouse WPX3800, with a max water pressure of 3800 PSI, has one of the higher PSI values of the gas-powered products in the $650-850 price range. In case you are looking for a device with the highest possible power of its water stream, one of the top achievers in this price range is the DeWalt DXPW4035 with a PSI of 4000.
  • The water flow of this washer, which reaches up to 3.6 GPM (gallons per minute) is one of the highest values found in the above-mentioned price range.
  • With a rather impressive value of 13680 Cleaning Units (PSI X GPM), the WPX3800 has a higher cleaning efficiency compared to similarly priced devices. If you consider the highest overall cleaning power as a really important factor, the DeWalt DXPW4035 and its 14000 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.

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

STRENGTHS:
  • Inexpensive
  • Triplex pump
  • Designed to be stable
  • Good range of nozzles included
  • Automatic detergent dilution
  • Onboard storage
  • Several security features
  • CARB-compliant
  • High PSI for the price
  • High GPM for the price
  • High CU for the price
WEAKNESSES:
  • The Westinghouse WPX3800 doesn't have any notably low specs.

Do you own the Westinghouse WPX3800 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

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.

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