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Stanley SXPW3425 Spec Review

The Stanley FatMax® SXPW3425 is a gas-powered pressure washer offering a maximum water pressure of 3400 PSI and flow of 2.5 GPM. (Read full specs)

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Stanley SXPW3425 3400PSI Gas Pressure WasherStanley SXPW3425 3400PSI Gas Pressure Washer
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Description

Zoom on the Stanley SXPW3425

In a nutshell, the Stanley SXPW3425 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 or high reach areas
  • thorough cleaning of hard, paint-free surfaces
  • cleaning of painted or delicate surfaces
  • applying detergent and cleaning solutions

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

Power

Using a powerful 208 cc engine, its axial cam pump delivers a pressure of up to 3400 PSI (roughly 57 times more than a standard garden hose) and a flow of up to 2.5 GPM (values claimed by the manufacturer). Together, the values result in a cleaning power of 8500 Cleaning Units.

The Kohler engine of this gas-powered pressure washer relies on an old-school pull-start mechanism to get started.

A fuel tank with a maximum capacity of 0.26 gallon is used to store gasoline.

Design & Handling

The wheelbarrow design of the Stanley SXPW3425 grants mobility and stability to the unit. The robust steel frame guarantees longevity of the assembly. The handle adds to the SXPW3425 convenience of transport.

Weighing 67 lbs, the unit is easy to maneuver by most people. Its 208 cc Kohler engine and steel frame all add up to a substantial part of that weight. The SXPW3425 can still be easily manipulated and maneuvered, thanks to its two 12" never-flat wheels.

Main Features

The Stanley SXPW3425 comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.

  • Soap injection: While the device doesn't feature a soap tank, detergent supply is ensured by a siphon hose. Whenever a soap nozzle is connected, the detergent is automatically added to the water.
  • Pressure hose: The 35 ft ⌀5/16" high-pressure hose, which is included with the device, can be stored neatly on the unit itself when idle, using a set of convenient hooks.
  • Spray gun and wand: The included classic ergonomic spray gun and its wand can be easily stored in a side hook.
  • Nozzles: The 5 nozzles included with the device, and the respective surfaces which they’re the most suitable for, are shown in the following table.
 


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 Stanley SXPW3425

The Stanley SXPW3425

  • Onboard storage: Stay prepared for any job with Stanley SXPW3425's handy storage area, which allows you to neatly store any nozzles and accessories which you may need for the job.
  • Pressure control: Water pressure can be manually changed, using the adjustable throttle of the trigger gun.
  • 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 Stanley SXPW3425 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, pressure hose and wand.
  • Emissions: The Stanley SXPW3425 is NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

The Stanley SXPW3425's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Stanley SXPW3425 compare to similarly priced pressure washers.

  • The Stanley SXPW3425, reaching a PSI of up to 3400, is one of the most powerful gas-powered units in $300-400 price range.
  • In the aforementioned price range, the 2.5 GPM (gallons per minute) of this washer makes it one of the better performing units in terms of the delivered volume of water. If rinsing away debris most efficiently is your priority, one of the devices with the highest GPM in this price range is the Predator 3100, which can reach up to 2.8 GPM.
  • The SXPW3425, with its 8500 Cleaning Units (PSI x GPM) sits at the high end of the cleaning efficiency spectrum, when compared to other devices of similar price. If you consider the highest overall cleaning power as a really important factor, the Westinghouse WPX3400 and its 8840 Cleaning Units has one of the highest cleaning efficiency of all the similarly priced units.

Price comparison

As you can see from this interactive chart, when compared to other gas-powered washers between 8000 and 8500 Cleaning Units, the Stanley SXPW3425 is on the average side of the price range.

Therefore, this pressure washer nicely fits in the expected budget for this kind of cleaning power.

The bottom line

STRENGTHS:
  • In the expected price range
  • Designed to be stable
  • Good range of nozzles included
  • Onboard storage
  • Several security features
  • 5 year (limited) warranty
  • High PSI for the price
  • High GPM for the price
  • High CU for the price
WEAKNESSES:
  • No soap tank
  • Not CARB-compliant

Do you own the Stanley SXPW3425 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
FuelGas-Powered
HandlingWheelbarrow
WaterCold (90°F max.)
PSI3400
GPM2.5
Cleaning Units8500
Engine208 cc Kohler 4-stroke OHV
PumpOEM Technologies™ Axial Cam
Features
FrameSteel
Soap injectionVia siphon hose
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose35 ft, ⌀5/16
Hose storageHooks
Misc
Dimensions
(L x W x H)
Approx. 33.3 x 18.3 x 19.8 in
Weight67 lbs
Pressure controlGun
Wheels2 wheels, ⌀12", never flat
Included accessoriesNozzle cleaner, wand, spray gun, high pressure hose, 5 nozzles
SecurityTrigger lock and thermal relief valve
EmissionsN/A
Warranty5 years

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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About Stanley

Founded in 1843 by Frederick Stanley in New Britain, Connecticut, Stanley has become one of the most famous names in hand tools worldwide. The Stanley Works company merged with Black & Decker in March 2010 to form Stanley Black & Decker. Building on its reputation for the quality and reliability of its manual hand tools, the company has also branched out into electric tools and outdoor power equipment, such as pressure washers and wet-dry vacuums. By using technology and innovation, the company is committed to the continued production of quality products in an environmentally sustainable way.

Warranty Information

The Stanley SXPW3425 is covered under a warranty for up to 5 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Stanley pressure washers, please contact the Stanley Customer Support: 1-877-362-4271.

Stanley SXPW3425
2 Total Score
1 review
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Ease Of Use
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Performance
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1 Review
  1. 1
    Ease Of Use
    20
    Value
    20
    Quality
    20
    Performance
    20

    Stanley is no longer the company it once was I can tell ya that ! First off I bought this model in February of 2020 used it once did have some major problems getting it to start but finally it did. It did set over 6 months went to use it on a job started up pulled trigger and engine died instantly over and over again . I sent a warranty request to Stanley who referred me to dewalt who still has yet to give me any answers I’ve been playing this game for 6 weeks now and quite frankly this things is too new to be messing up already I just want my machine fixed and I feel like I’m being jerked around I even offered since they are owned by dewalt now to give this pos back and pay the difference for a dewalt washer which is much more expensive but as long as the machine works I don’t have a problem with it . Even after offering that they still have not responded . They will surely blame the slowness on covid and people need to get off the covid train already I’m sick of it affecting everything you got lazy people working from home now doing what they want and it’s sickening !

    + PROS: Looks real nice
    - CONS: Doesn’t work . And when it does start up it don’t have any pressure it’s a pos !
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