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Westinghouse WPX4400 - 4400 PSI 4.2 GPM 420cc Gas Pressure Washer

The Westinghouse WPX4400 is a gas-powered pressure washer offering a maximum water pressure of 4400 PSI and flow of 4.2 GPM. (Read full specs)

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Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold (104°F max.)
PSI4400
GPM4.2
Cleaning Units18480
Engine420cc OHV 4-stroke
PumpTriplex
Pump materialBrass
FrameSteel tubing
Soap injectionVia siphon hose
Soap dilution12:1
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose50 ft, ⌀5/16
Hose storageHooks
Dimensions
(L x W x H)
Approx. 38 x 25 x 30 in
Weight142 lbs
Wheels2 wheels, ⌀12"
Included accessoriesOil, funnel, nozzle cleaner, steel wand, EnduraGrasp spray gun, high pressure hose, soap hose, 5 nozzles
SecurityTrigger lock and thermal relief valve
EmissionsCARB, EPA
Warranty3 years
UPC850032657693

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 WPX4400

In summary, the Westinghouse WPX4400 is a heavy duty, commercial pressure washer, that offers an all-around versatile cleaning experience, and also:

  • spot cleaning of hard, paintless surfaces and reaching far-away areas
  • thorough cleaning of hard, paint-free surfaces
  • cleaning of painted and frail surfaces
  • use of detergent and cleaning solutions

Its power characteristics and design, its main features and all its additional features are presented ahead.

Power

The Westinghouse WPX4400 in use

The Westinghouse WPX4400

The Westinghouse WPX4400's brass triplex pump, powered by an impressive 420cc engine, can provide a pressure of up to 4400 PSI (approximately 73 times more than a standard garden hose) and a flow of up to 4.2 GPM (values claimed by the manufacturer). The Westinghouse WPX4400 thus has a cleaning power of 18480 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 1.72 gallon.

Design & Handling

The wheelbarrow design of the Westinghouse WPX4400 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.

With a weight of 142 lbs, the model is not lightweight. Therefore, it may be challenging to manually carry it around and transport it. A key role in its final weight is played by its 420cc engine, the triplex pump and steel tubing frame. However, the unit is mobile thanks to its two 12" wheels, which add to its movability and allow it to be manipulated smoothly on the job.

Main Features

The Westinghouse WPX4400 in use

The Westinghouse WPX4400

The Westinghouse WPX4400'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: Even though the device doesn't have a soap tank, detergent is supplied by a siphon hose. The detergent is diluted with a 12:1 ratio by the Westinghouse WPX4400's automatic soap dilution mechanism. When a soap nozzle is connected, the detergent will be added automatically to the water.
  • Pressure hose: A neat storage for the included 50 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 ergonomic EnduraGrasp 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 WPX4400

The Westinghouse WPX4400

  • Onboard storage: The Westinghouse WPX4400's handy storage area lets you store nozzles and accessories, and thus, you’ll be always prepared and have everything necessary for the job 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: Included with the Westinghouse WPX4400 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 soap hose, funnel, pressure hose, nozzle cleaner, wand, spray gun and oil.
  • Emissions: The Westinghouse WPX4400 is EPA-approved and CARB-compliant. This means that this pressure washer can be bought and sold in each of the 50 states, including California.

The Westinghouse WPX4400's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Westinghouse WPX4400 compare to similarly priced pressure washers.

  • The Westinghouse WPX4400, with a max water pressure of 4400 PSI, has one of the highest PSI values of the gas-powered products in the $825-900 price range.
  • In the aforementioned price range, the 4.2 GPM (gallons per minute) of this washer makes it one of the best performing units in terms of the delivered volume of water.
  • The WPX4400, with its 18480 Cleaning Units (PSI X GPM) sits at the high end of the cleaning efficiency spectrum, when compared to other devices of similar price.

Price comparison

As you can see from these interactive charts, when compared to other gas-powered washers between 17600 and 18900 Cleaning Units, the Westinghouse WPX4400 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:
  • No soap tank

Do you own the Westinghouse WPX4400 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 WPX4400 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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