Sun Joe SPX3550 - 2350 PSI 1.8 GPM Electric Pressure Washer
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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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.
Zoom on the Sun Joe SPX3550
In summary, the Sun Joe SPX3550 is a medium duty pressure washer, that offers an all-around versatile cleaning experience, and also:
- precise spot cleaning of hard, unpainted surfaces, reaching elevated areas, and effectively removing stubborn stains
- general cleaning of hard surfaces , washing vehicles, and preparing surfaces for painting
- mild cleaning for delicate surfaces, and low-pressure cleaning for broader areas
- applying detergents or chemicals, and rinsing surfaces afterward
Ahead are presented its power characteristics and design, its main features and any other additional features.
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). While these PSI and GPM values represent the maximum capabilities of the washer under specific conditions, it's important to note that under typical usage, the working pressure is 2000 PSI and the flow rate is 1.1 GPM, resulting in the Sun Joe SPX3550's cleaning power of 2200 Cleaning Units.
The SPX3550 easily starts up with the press of an ON/OFF switch, providing seamless operation. The unit is ready-to-use with peace of mind, thanks to the included 35 ft GFCI cord.
Design & Handling
The Sun Joe SPX3550's commitment to mobility is evident through its portable design and approximate dimensions of D15 x W17 x H36 in. The handle adds to the SPX3550 convenience of transport.
With its featherlight weight of 24 lbs, this unit offers unparalleled ease of transport and handling. This owes partly to its plastic frame, contributing to its lightweight design. In addition to its lightweight build, the inclusion of two solid wheels ensures easy mobility and handling.
Main Features
The Sun Joe SPX3550'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 storage is facilitated by the inclusion of a removable 0.32 gal tank. The detergent dilution ratio can be manually selected, using a dial. When a soap nozzle is connected, the pressure washer takes the initiative to mix the detergent with the water flow automatically.
- Pressure hose: For easy organization, the included 20 ft high-pressure hose can be stored on the unit using a set of convenient hooks when it's not in use, ensuring a clutter-free workspace.
- Spray gun and wand: Both the classic ergonomic spray gun and its wand may be conveniently stored in a side hook.
- Nozzles: The table below shows you the 5 included nozzles and the surfaces they're the most appropriate for.
0° | 15° | 25° | 40° | Soap | |
|---|---|---|---|---|---|
| Concrete, brick, masonry | |||||
| Siding, gutters, house | |||||
| Fencing, deck, patio | |||||
| Lawn equipment, boat, RV |
Important note: The shapes of the depicted nozzles serve for illustration purposes only and may vary. Symbols used include a for 'Not recommended,' a for 'Suitable,' and an for 'Use with caution.'
Other Features
- Total Stop System (TSS): Featuring an automatic shut-off mechanism, this pressure washer stops running when the trigger is released, enhancing the pump's durability.
- 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: Included with the Sun Joe SPX3550 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 wand, pressure hose, spray gun, garden hose adapter, nozzle cleaner and power cord.
Product Video
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.
- With a maximum pressure of 2350 PSI, the Sun Joe SPX3550 is among the electric options offering above-average water pressure, in the $195 to $255 price bracket. If your priority is the highest possible power of the water stream, in this price range, we suggest checking out the Craftsman CMEPW2800, which reaches up to 2800 PSI.
- Boasting a water flow of up to 1.8 GPM, this washer occupies the higher ranks of the price range mentioned above, ensuring a substantial water volume. If maximum rinsing efficiency is your top priority, one of the devices with the highest water flow in the same price range is the AR Blue Clean XM2400, with a GPM of 1.9.
- Boasting 2200 Cleaning Units in total, the SPX3550 positions itself in the average cleaning efficiency range for devices of similar pricing and fuel type. When it comes to the highest overall cleaning power in the current price range, one of the products at the very top currently is the BE P1915EN and its 3400 Cleaning Units.
Here's a list of the most popular specific comparisons:
Price comparison
As you can see from these interactive charts, when compared to other electric washers between 2000 and 2500 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
- In the expected price range
- Induction motor
- Portable
- Good range of nozzles included
- Detergent dilution mechanism
- Onboard storage
- High PSI for the price
- High GPM for the price
- Decent CU for the price
The Sun Joe SPX3550 doesn't have any notably low specs.
Features and Specifications
| Fuel | Electric |
|---|---|
| Motor | 14.9-amp, induction |
| Pump | Axial |
| Water | Cold (104°F max.) |
| PSI (max/rated) | 2350/2000 |
| GPM (max/rated) | 1.8/1.1 |
| Cleaning Units | 2200 |
| Frame | Plastic |
|---|---|
| Handling | Portable |
| Wheels | 2 wheels, solid |
| Weight | 24 lbs |
| Dimensions | Approx. 15 x 17 x 36 in (D x W x H) |
| Hose storage | Hooks |
| Soap injection | Yes |
|---|---|
| Soap tank | 0.32 gal, removable |
| Soap dilution | Wheel |
| Nozzles | 0°, 15°, 25°, 40°, Soap |
| Quick connect nozzles | Yes |
| Onboard storage | Yes |
| Hose | 20 ft |
| Security | Trigger lock |
|---|---|
| Included accessories | Nozzle cleaner, wand, spray gun, high pressure hose, garden hose adapter, 35 ft GFCI power cord, 5 nozzles |
| Warranty | 2 years |
| UPC | 842470128699 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
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: 1-866-225-9723.

