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Sun Joe SPX3550 Spec Review

The Sun Joe SPX3550 is an electric pressure washer offering a maximum water pressure of 2350 PSI and flow of 1.8 GPM. (Read full specs)

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Sun Joe SPX3550 2350PSI Electric Pressure WasherSun Joe SPX3550 2350PSI Electric Pressure WasherSun Joe SPX3550 2350PSI Electric Pressure Washer

Description

Equipped with an eco-friendly, 14.9-amp motor, SPX3550 packs a super-powered punch, generating up to 2350 PSI (at initial discharge per CSA internal pressure testing) and 1.8 GPM (with nozzle open at minimum pressure) of pure cleaning power take on tough grease and oil stains, mildew, caked-on mud, and other stubborn gunk and grime. (source: Sun Joe (opens in a new tab))

Zoom on the Sun Joe SPX3550

In a nutshell, the Sun Joe SPX3550 is a medium duty 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

The following sections will present you in detail its power characteristics and design, its main features and all the additional features it has to offer.

Power

With a 14.9 amp induction motor, its axial pump delivers a pressure of 2350 PSI (roughly 39 times more than a standard garden hose) and a flow of up to 1.8 GPM (values as per CSA testing standards), resulting in the Sun Joe SPX3550's cleaning power of 4230 Cleaning Units.

As it is an electric pressure washer, the motor of the SPX3550 gets easily started by a simple ON/OFF switch. The unit is ready-to-use with peace of mind, thanks to the included 35 ft GFCI cord.

Design & Handling

With its portable design and approximate dimensions of D15 x W17 x H36 in, the Sun Joe SPX3550 makes mobility one of its core strengths. The handle adds to the SPX3550 convenience of transport.

Because the device weighs just 24 lbs, carrying it around is very easy. This is, in part, thanks to its plastic frame, which allows it to remain as lightweight as possible. To further improve its transportability and ease of use, the unit also features a set of two solid wheels.

Main Features

The Sun Joe SPX3550 comes with a spray gun, a wand, a pressure hose, 5 nozzles and a detergent injection feature, which are detailed below.

  • Soap injection: Detergent is stored in a removable 0.32 gal tank. The device has a dial which allows you to manually select the detergent dilution ratio. If a soap nozzle is attached, the device will proceed to add the detergent to the water automatically.
  • Pressure hose: The included 20 ft high-pressure hose can be neatly stored on the unit when idle thanks to 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 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

Some of the accessories of the Sun Joe SPX3550

Some of the included accessories

  • Total Stop System (TSS): This feature automatically shuts off the pressure washer when the trigger is not engaged, to prolong the pump's lifespan.
  • Onboard storage: The Sun Joe SPX3550'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).
  • Accessories: On top of an owner's manual and the usual documentation to get you swiftly started, the Sun Joe SPX3550 also comes with wand, pressure hose, power cord, nozzle cleaner, garden hose adapter and spray gun.

The Sun Joe SPX3550's performance versus other pressure washers

The following charts are provided to give you an idea of how the key specs of the Sun Joe SPX3550 compare to similarly priced pressure washers.

Note: Even though we couldn’t list its price on this page, our research indicates that some retailers sell this unit around $270.

  • With its 2350 PSI max pressure output, the Sun Joe SPX3550 is in the expected pressure range, for electric units in the $240-300 price range. If the highest possible power of the water stream is your priority, one of the champions in this price range is the Realm BY02-BIMH-3000 with 3000 PSI.
  • With a maximum GPM of 1.8 (gallons per minute), this washer belongs to the top in terms of water flow, in its respective price range. If maximum rinsing efficiency is your top priority, one of the devices with the highest water flow in the same price range is the Greenworks GPW2700, with a GPM of 2.3.
  • Boasting with 4230 Cleaning Units (PSI x GPM), the SPX3550 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 Greenworks GPW2700 and its 6210 Cleaning Units.

Price comparison

As you can see from this interactive chart, when compared to other electric washers between 3900 and 4600 Cleaning Units, the Sun Joe SPX3550 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
  • Induction motor
  • Portable
  • Good range of nozzles included
  • Detergent dilution mechanism
  • Onboard storage
  • High GPM for the price
  • High CU for the price
AVERAGE SPECS:
  • Decent PSI for the price
WEAKNESSES:
  • The Sun Joe SPX3550 doesn't have any notably low specs.

Do you own the Sun Joe SPX3550 and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
FuelElectric
HandlingPortable
WaterCold (104°F max.)
PSI (max/rated)2350/2000
GPM (max/rated)1.8/1.1
Cleaning Units4230
Motor14.9 amp, induction
PumpAxial
Features
FramePlastic
Soap injectionYes
Soap tank0.32 gal, removable
Soap dilutionWheel
Nozzles0°, 15°, 25°, 40°, Soap
Quick connect nozzlesYes
Onboard storageYes
Hose20 ft
Hose storageHooks
Misc
Dimensions
(D x W x H)
Approx. 15 x 17 x 36 in
Weight24 lbs
Wheels2 wheels, solid
Included accessoriesNozzle cleaner, wand, spray gun, high pressure hose, garden hose adapter, 35 ft GFCI power cord, 5 nozzles
SecurityTrigger lock
Warranty2 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 Sun Joe

Sun Joe is the brand that the parent Snow Joe Company uses to market its line of summertime outdoor power equipment. Founded in 1994 in Edison, NJ, Snow Joe + Sun Joe has consistently supplied do-it-yourselfers with quality corded electric and battery-powered tools for home and gardening needs. The company strives to be ecologically friendly and prides itself on innovation and low-cost solutions. Their range of products includes snow throwers, lawn mowers, pressure washers, and trimmers. The design team is located in Carlstadt, NJ, while the manufacturing facilities are located in China, India, Taiwan, Japan, as well as in the USA.

Warranty Information

The Sun Joe SPX3550 is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the unit.
For more information about the warranty of Sun Joe pressure washers, please consult Sun Joe's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-866-SNOWJOE (866-766-9563).

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