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Simpson PS4240 - 4200 PSI 4 GPM Gas Pressure Washer With Honda Engine

The Simpson PowerShot PS4240 is a gas-powered pressure washer offering a maximum water pressure of 4200 PSI and flow of 4 GPM. (Read full specs)

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Set an alert for the Simpson PS4240 - Current lowest price: $1,099.00
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Price history for the Simpson PS4240
Latest updates:
  • $1,099.00 - November 30, 2023
  • $1,199.99 - October 18, 2023
Data source: farmandfleet.com
Since: October 18, 2023
  • Highest Price: $1,199.99 - October 18, 2023
  • Lowest Price: $1,099.00 - November 30, 2023

Features and Specifications

FuelGas-Powered
HandlingWheelbarrow
WaterCold (100°F max.)
PSI4200
GPM4
Cleaning Units16800
Engine389cc 11.7 HP Honda GX390 OHV 4-stroke
PumpAAA Triplex
SeriesPowerShot
Other model numbers60456
FrameWelded steel
Soap injectionVia siphon hose
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose50 ft, ⌀3/8
Hose storageHooks
Dimensions
(L x W x H)
Approx. 38 x 23.5 x 29 in
Weight136 lbs
Pressure controlValve
Wheels2 wheels, ⌀13", pneumatic
Included accessoriesOil, steel wand, spray gun, high pressure hose, soap hose, 5 nozzles
SecurityLow oil, trigger lock and thermal relief valve
EmissionsEPA
Warranty10 years
UPC879399000713

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

Built for cleaning professionals, the SIMPSON PowerShot 4200 PSI @ 4.0 GPM is built to perform. With a powerful Honda engine, reliable triplex pump and welded steel frame construction, this gas pressure washer is great for construction, equipment upkeep, facility & fleet maintenance cleaning. (source: Simpson (opens in a new tab))

Zoom on the Simpson PS4240

The Simpson PS4240 is a heavy duty, commercial pressure washer, that provides its users with an all-around versatile cleaning experience, and enables:

  • spot cleaning of hard, unpainted surfaces and high-reach cleaning
  • intense cleaning of hard, unpainted surfaces
  • cleaning of painted or delicate 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 Simpson PS4240 in use

The Simpson PS4240

With a powerful 389cc (11.7 hp) engine, its triplex pump delivers a pressure of 4200 PSI (roughly 70 times more than a standard garden hose) and a flow of up to 4 GPM (CETA-certified values), resulting in the Simpson PS4240's cleaning power of 16800 Cleaning Units.

This gas-powered pressure washer’s Honda GX390 engine is started by a traditional pull-start mechanism.

Gasoline storage is facilitated by a steel fuel tank with a maximum capacity of 1.6 gallon.

Design & Handling

The wheelbarrow design of the Simpson PS4240 grants mobility and stability to the unit. The robust welded steel frame guarantees longevity of the assembly. The handle adds to the PS4240 convenience of transport.

This model weighs 136 lbs. For this reason, it cannot be called lightweight and thus, carrying and transporting it might be somewhat challenging. The main contributors to its weight are its 389cc Honda GX390 engine, the triplex pump and welded steel frame. However, the unit’s two 13" pneumatic wheels are crucial to its maneuverability, since they provide a smooth method of manipulation on the job.

Main Features

The Simpson PS4240 in use

The Simpson PS4240

Along with the Simpson PS4240 itself, the package also includes a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are discussed in further detail below.

  • Soap injection: Even though the device doesn't have a soap tank, detergent is supplied by a siphon hose. The detergent is automatically added to the water when a soap nozzle is connected.
  • Pressure hose: The 50 ft ⌀3/8" 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: A side hook allows for an easy storage of the included classic ergonomic spray gun and its steel wand.
  • 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

Some of the accessories of the Simpson PS4240

Some of the included accessories

  • Onboard storage: The Simpson PS4240 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), a low oil protection and a thermal relief valve (which helps to prevent internal pump damage).
  • Accessories: Included with the Simpson PS4240 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 pressure hose, oil, spray gun, soap hose and wand.
  • Emissions: The Simpson PS4240 is NOT CARB-compliant. Therefore, it is not available in California for sale nor purchase.

Product Videos

The Simpson PS4240's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Simpson PS4240 compare to similarly priced pressure washers.

  • The Simpson PS4240, with a max water pressure of 4200 PSI, has one of the higher PSI values of the gas-powered products in the $1000-1200 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 Simpson ALH4440-S with a PSI of 4400.
  • With a maximum GPM of 4 (gallons per minute), this washer belongs to the best in terms of water flow, in its respective price range.
  • Boasting with 16800 Cleaning Units (PSI X GPM), the PS4240 is one of the more efficient devices in its respective price range. In case you are looking for the highest overall cleaning power, in this price range, one of the current champions is the Simpson ALH4440-S and its 17600 Cleaning Units.
According to our stats, the following comparison is pretty popular: Simpson PS4240 vs Simpson ALH4240.

Price comparison

As you can see from these interactive charts, when compared to other gas-powered washers between 16500 and 17000 Cleaning Units, the Simpson PS4240 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
  • 10 year (limited) warranty
  • Triplex pump
  • Honda engine
  • Designed to be stable
  • Good range of nozzles included
  • Onboard storage
  • Several security features
  • 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 Simpson PS4240 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

About Simpson

Simpson has over 50 years of experience making quality products for the outdoor power equipment industry. Part of the FNA Group based in Pleasant Prairie, Wisconsin since 2006, they are a vertically-integrated company, meaning most of the parts and accessories are manufactured and assembled by them. Their manufacturing facilities are international, but their gas-powered pressure washers are made in the USA. With the company motto "Driven by Performance", Simpson continues to offer a great variety of pressure-washing systems for the homeowner or the professional contractor.

Warranty Information

The Simpson PS4240 is covered under a warranty for up to 10 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Simpson pressure washers, please contact the Simpson Customer Support: 1-877-362-4271.

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