The Sun Joe SPX4000 is an electric pressure washer offering a maximum water pressure of 2030 PSI and flow of 1.76 GPM. (Read full specs)
Zoom on the Sun Joe SPX4000
In a nutshell, the Sun Joe SPX4000 is a medium duty pressure washer, which not only offers an all-around versatile cleaning experience, but that also allows:
- spot cleaning of hard, paint-free surfaces and out-of-reach areas
- intense cleaning of tough, paintless surfaces
- cleaning of painted or delicate surfaces
- application of detergent and cleaning solutions
Its axial pump, which utilizes a 14.5 amp motor, may deliver a pressure of up to 2030 PSI (almost 34 times more than a standard garden hose) and a flow of up to 1.76 GPM. These values correspond to a cleaning power of 3572.8 Cleaning Units.
As it is an electric pressure washer, the motor of the SPX4000 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
Thanks to its hand truck design and approximate dimensions of D21.2 x W19.3 x H36.6 in, the Sun Joe SPX4000 offers great mobility. The robust metal frame guarantees longevity of the assembly. The foam-padded fixed handle adds to the SPX4000 convenience of transport, while offering a comfortable grip.
Because the device weighs just 27.8 lbs, carrying it around is very easy. On top of its light weight, the transportability and easy of use of this model is further improved by the addition of two 8" wheels.
The Sun Joe SPX4000'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 removable 0.4 gal tank. The detergent dilution ratio is selected manually, via a dedicated dial. The detergent is automatically added to the water when a soap nozzle is connected.
- Pressure hose: The 20 ft ⌀1/4" 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 wand.
- Nozzles: The table below shows you the 5 included nozzles, as well as the surfaces they're the most appropriate for.
|Concrete, brick, masonry||Use with caution||Suitable||Suitable||Suitable||Suitable|
|Siding, gutters, house||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Fencing, deck, patio||Not recommended||Use with caution||Use with caution||Suitable||Suitable|
|Lawn equipment, boat, RV||Not recommended||Use with caution||Use with caution||Use with caution||Suitable|
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.
- 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: With the Sun Joe SPX4000's handy storage area, you’ll always have all the necessary nozzles and accessories at hand and thus, you’ll be fully prepared for any job.
- Safety: Safety of operation is enhanced by a trigger lock mechanism (which prevents accidental operation).
- Accessories: The Sun Joe SPX4000 comes with an owner's manual (opens in a new tab) and some basic documentation to get you quickly started. On top of that, you also get wand, nozzle cleaner, pressure hose, spray gun and power cord.
The Sun Joe SPX4000'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 SPX4000 compare to similarly priced pressure washers.
- The Sun Joe SPX4000, with a max water pressure of 2030 PSI, has one of the higher PSI values of the electric products in the $140-170 price range. If you're going after the highest possible power of the water stream, one of the best in this price range is the Realm BY03-VBP-WTR that can reach up to 2400 PSI.
- Considering the above-mentioned price range, this washer's maximum water flow of 1.76 GPM (gallons per minute) is higher than the average. If maximum rinsing efficiency is your top priority, one of the devices with the highest water flow in the same price range is the Sun Joe SPX2866-MAX, with a GPM of 1.8.
- The SPX4000, with its 3572.8 Cleaning Units (PSI x GPM) sits at the high end of the cleaning efficiency spectrum, when compared to other devices of similar price. If the highest overall cleaning power is your top priority, the Realm BY03-VBP-WTR, which can reach up to 4200 Cleaning Units, is one of the most efficient of the devices in the current price range.
Here's a list of the most popular specific comparisons:
As you can see from this interactive chart, when compared to other electric washers between 3500 and 4000 Cleaning Units, the Sun Joe SPX4000 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.
Features and Specifications
|Water||Cold (104°F max.)|
|Soap tank||0.4 gal, removable|
|Nozzles||0°, 15°, 25°, 40°, Soap|
|Quick connect nozzles||Yes|
|Hose||20 ft, ⌀1/4|
(D x W x H)
|Approx. 21.2 x 19.3 x 36.6 in|
|Wheels||2 wheels, ⌀8"|
|Included accessories||Nozzle cleaner, wand, spray gun, high pressure hose, 35 ft GFCI power cord, 5 nozzles|
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.
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.
The Sun Joe SPX4000 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).