Last Updated on October 20, 2026
Sun Joe is one of the well-known electric pressure washer brands for residential cleaning. Among its various models, the Sun Joe SPX3500 stands out for its practical design, versatile spray nozzles, and convenient electric operation. If you’re looking for a pressure washer to clean your driveway, patio, deck, or outdoor furniture, this model is worth considering. Read this Sun Joe SPX3500 review to learn about its features, performance, advantages, and limitations.
The original SPX3500 features a 13-amp brushless induction motor, with advertised maximum ratings of 2300 PSI and 1.48 GPM. However, these are maximum test figures, not the pressure and water flow delivered together during normal cleaning. Its typical operating ratings are approximately 2000 PSI and 1.09 GPM.
An important update for 2026 is that Sun Joe has also published a revised SPX3500 manual describing a 14.9-amp version rated at 2000 PSI and 1.1 GPM. Therefore, buyers should check the product label and manual to confirm which version they are purchasing. This review primarily covers the original 13-amp induction model, with relevant differences explained where necessary.
Sun Joe SPX3500 Electric Pressure Washer Technical Specifications
| Features | Sun Joe SPX3500 Original Model |
|---|---|
| Motor | 13-amp brushless induction motor |
| Maximum Pressure | 2300 PSI (maximum test rating) |
| Rated Working Pressure | 2000 PSI |
| Maximum Water Flow | 1.48 GPM (maximum test rating) |
| Rated Water Flow | 1.09 GPM |
| Total Stop System (TSS) | Automatically stops the motor when the trigger is released |
| Maximum Water Inlet Temperature | 104°F (40°C) |
| Power Cord | 35 feet with GFCI protection |
| Power Source | 120V, 60Hz corded electric |
| Detergent Tank | 40.6 fl oz (1.2 liters), removable |
| Spray Nozzles | Five Quick-Connect nozzles (0°, 15°, 25°, 40°, and Soap) |
| High-Pressure Hose | 20 feet |
| Weight | Approximately 36.8 lbs for the earlier manual revision; verify your unit |
| Related Product Price |  Check Sun Joe SPX3000 Price on AmazonNote: This existing Amazon link leads to the SPX3000, not the SPX3500. Confirm the model number before purchasing. |
The SPX3500 provides enough cleaning power for most everyday household jobs. It can remove dirt, mud, pollen, and surface grime from patios, sidewalks, outdoor furniture, and other washable surfaces. However, stubborn concrete stains and large commercial cleaning jobs may require a more powerful machine.
Sun Joe SPX3500 Review 2026
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Construction and Design
The Sun Joe SPX3500 has an upright design that is convenient for residential use. Its black-and-green body looks attractive, while the built-in wheels make it easier to move around the yard.
The unit includes storage areas for the spray nozzles, hose, and power cord. This keeps the accessories organized and reduces clutter when the washer is not in use.
Although the original induction-motor SPX3500 is heavier than many compact electric pressure washers, its wheels and handle help with transportation. Users should keep it on a stable, level surface during operation to prevent tipping.
Unlike some smaller machines, the SPX3500 offers a removable detergent tank and an adjustable detergent dial. These features are helpful when washing vehicles, outdoor furniture, and other surfaces that require cleaning solutions.
If you prefer another Sun Joe model, our Sun Joe SPX3001 review explains an alternative designed for similar household cleaning tasks.
Powerful Electric Motor
One of the main selling points of the original SPX3500 is its 13-amp induction motor. This type of motor generally runs more quietly than a typical brushed universal motor and avoids the maintenance associated with carbon brushes.
The original model advertises 2300 PSI maximum pressure and 1.48 GPM maximum water flow. Under typical operating conditions, however, the manufacturer specifies approximately 2000 PSI and 1.09 GPM.
These ratings are suitable for light- and medium-duty jobs, including washing patio surfaces, garden tools, siding, and vehicles when appropriate cleaning techniques are used.
Remember that the updated 14.9-amp SPX3500 version has different published specifications. Its manual lists 2000 PSI rated pressure and 1.1 GPM rated flow. Check the exact product version rather than assuming all SPX3500 units have identical motors.
Sturdy Wheels and Portability
A pressure washer should be easy to move, especially when cleaning different areas around the house. The Sun Joe SPX3500 includes two wheels that help you roll the machine across reasonably smooth outdoor surfaces.
Compared with the Sun Joe SPX4000 electric pressure washer, the original SPX3500 has a different motor design and weight distribution.
Its upright construction saves storage space, but users should avoid pulling the machine by its hose or electrical cord. Move it using the handle instead.
Five Quick-Connect Nozzles
Versatility is another reason homeowners may appreciate this pressure washer. It comes with five Quick-Connect nozzles designed for different cleaning requirements.
- 0° nozzle: Produces a concentrated stream for specific tough cleaning tasks. Never use it on vehicles, wood, glass, or delicate surfaces.
- 15° nozzle: Provides a narrow spray for more demanding cleaning on suitable durable surfaces.
- 25° nozzle: Offers a balanced spray pattern for general outdoor cleaning.
- 40° nozzle: Provides a wider, gentler spray suitable for many less demanding tasks.
- Soap nozzle: Applies compatible pressure washer detergent at low pressure.
The pressure washer does not have two separate selectable pressure settings of 2300 and 2000 PSI. Those figures describe maximum and rated operating conditions. The spray pattern, distance from the surface, and cleaning technique affect how aggressively the water cleans.
Always begin with a wider nozzle and test a small, inconspicuous area before moving closer.
Other Accessories
The original Sun Joe SPX3500 includes several useful accessories:
- 20-foot high-pressure hose
- 35-foot GFCI-protected power cord
- Spray wand and trigger gun
- Five interchangeable spray nozzles
- Removable detergent tank
- Needle clean-out tool
- Garden hose connection adapter
Its Total Stop System automatically switches off the motor when the spray trigger is released. This reduces unnecessary motor operation between cleaning passes.
The included 20-foot hose is sufficient for many small jobs, but users cleaning larger driveways or vehicles may wish to check compatible extension options.
Check Sun Joe SPX3000 Price on Amazon
The linked product is the SPX3000 alternative, not the SPX3500 reviewed here.
Warranty
The Sun Joe SPX3500 has been offered with a two-year limited warranty for qualifying residential purchases. The newer SPX3500 manual also describes registration and optional extended coverage.
Warranty eligibility depends on the purchase date, seller, product version, and applicable terms. Buyers should confirm the current warranty conditions before ordering, particularly when purchasing from third-party sellers.
If you want a potentially more affordable alternative, read our Sun Joe SPX3000 review before deciding.
What We Liked About the Sun Joe SPX3500 Pressure Washer
- Convenient upright design for home storage
- Original version features a brushless induction motor
- Five Quick-Connect nozzles for different cleaning tasks
- Removable detergent tank with adjustable detergent dial
- 35-foot GFCI-protected power cord
- Total Stop System reduces unnecessary motor operation
- Wheels and carrying handle improve portability
- Suitable for many routine residential cleaning jobs
- Two-year limited warranty for eligible purchases
What We Didn’t Like About the Sun Joe SPX3500
- The original induction version is relatively heavy compared with compact electric models.
- The 20-foot hose may be short for larger properties.
- Its vertical design requires a level surface for stability.
- It is not ideal for demanding commercial cleaning or large-scale paint removal.
- Different SPX3500 manual revisions make checking the exact specifications important.
- Replacement parts and availability should be confirmed before purchasing an older unit.
For larger projects requiring higher water flow, a machine such as the Simpson MegaShot 3200 PSI pressure washer may be a better option, provided its specifications and operating requirements suit your needs.
Common Sun Joe SPX3500 Problems and Troubleshooting
Like other electric pressure washers, the SPX3500 can occasionally experience starting problems, inconsistent pressure, or interrupted operation. The following table covers common causes and practical first checks.
| Issue | Possible Cause | Solution |
|---|---|---|
| Machine won’t start | Power supply problem, tripped GFCI, damaged cord, or circuit issue | Check the outlet, reset the GFCI, and verify the power supply. Never operate with a damaged cord. |
| Fluctuating pressure | Air entering the pump, restricted water supply, blocked filter, or internal pump wear | Check the inlet hose, clean the filter, and purge trapped air. Contact service if the problem continues. |
| Machine stops during operation | Thermal protection, electrical supply problem, or restricted water flow | Switch off and unplug the unit. Allow it to cool, check the water supply, and inspect the nozzle before restarting. |
| Low cleaning pressure | Incorrect nozzle, clogged nozzle, or inadequate inlet water flow | Use an appropriate nozzle and verify that the garden hose provides sufficient water. |
| Detergent is not dispensing | Wrong nozzle, closed detergent dial, or blocked detergent passage | Install the soap nozzle, adjust the detergent dial, and check for residue or blockages. |
If the detergent system stops working, our guide on pressure washer care and outdoor equipment maintenance can help you explore related maintenance topics.
Sun Joe SPX3500 Maintenance Tips
Regular maintenance helps keep your pressure washer working properly and reduces the risk of unnecessary repairs.
| Maintenance Task | Frequency | Procedure |
|---|---|---|
| Inspect electrical cord | Before every use | Check for cuts, wear, and damaged insulation. |
| Clean inlet filter | Periodically or when dirty | Disconnect the water supply and rinse debris from the filter. |
| Inspect hoses | Before every use | Check for leaks, cracks, and loose connections. |
| Clean spray nozzles | As needed | Switch off, unplug, release pressure, and use the supplied cleaning tool. |
| Rinse detergent tank | After detergent use | Flush according to the manual to prevent detergent residue buildup. |
| Prepare for storage | After use and before freezing weather | Follow the manual’s draining and winterizing instructions. Store indoors away from freezing temperatures. |
Who Should Buy the Sun Joe SPX3500 Pressure Washer?
The SPX3500 is a practical choice for homeowners who need an electric pressure washer for occasional cleaning around the house.
It can handle jobs such as washing patios, walkways, outdoor furniture, and vehicles when used carefully with the appropriate nozzle.
However, it may not be the best option for professional contractors, large commercial properties, or frequent heavy-duty concrete cleaning. In these situations, a higher-flow machine may complete the work faster.
For smaller cleaning jobs, a compact alternative may be more convenient. You can also read our Ryobi 1600 PSI pressure washer review to compare another lightweight option.
Sun Joe SPX3500 vs SPX3000: Which Pressure Washer Is Better?
The Sun Joe SPX3500 and SPX3000 are both designed for residential outdoor cleaning. The original SPX3500 emphasizes its induction motor, while the SPX3000 offers a lighter design and two detergent tanks.
The comparison below uses the original 13-amp SPX3500 specifications. Revised SPX3500 versions may differ.
| Feature | Sun Joe SPX3500 (Original) | Sun Joe SPX3000 |
|---|---|---|
| Type | Electric | Electric |
| Motor | 13-amp induction | 14.5-amp universal |
| Maximum Pressure | 2300 PSI | 2030 PSI |
| Rated Pressure | 2000 PSI | Approximately 1450 PSI |
| Maximum Flow | 1.48 GPM | 1.76 GPM |
| Rated Flow | 1.09 GPM | Approximately 1.24 GPM |
| Detergent Tanks | One 1.2-liter tank | Two 0.9-liter tanks |
| Nozzles | Five | Five |
| Hose | 20 feet | 20 feet |
| Power Cord | 35 feet | 35 feet |
| Total Stop System | Yes | Yes |
| Portability | Heavier original induction design | Lighter, easier to carry |
| Best For | Regular household cleaning with an induction motor | General cleaning and easier portability |
Which one should you choose? The original SPX3500 is attractive if you prefer an induction motor and higher rated working pressure. The SPX3000 is a sensible alternative if portability, dual detergent tanks, and simpler household cleaning are your priorities.
Do not compare maximum PSI multiplied by maximum GPM as though both figures occur simultaneously. Rated operating performance, cleaning technique, and surface condition provide a more useful comparison.
Conclusion: Is the Sun Joe SPX3500 Worth Buying in 2026?
The Sun Joe SPX3500 remains a capable electric pressure washer for regular residential cleaning. Its convenient design, multiple nozzles, detergent tank, and electric operation make it suitable for homeowners who want to clean outdoor surfaces without dealing with gasoline engines.
The original induction-motor version offers useful performance, although it is heavier than some alternatives. The revised SPX3500 specifications also make it important to check the motor, rated pressure, and product documentation before buying.
If your priority is cleaning patios, walkways, vehicles, and outdoor furniture, the SPX3500 can be a good choice at a reasonable price. For demanding professional work, you may want to consider higher-output Generac pressure washers or another machine designed for heavy-duty use.
Overall, this Sun Joe SPX3500 review should help you decide whether the model suits your cleaning needs and which specifications to verify before making a purchase.
Frequently Asked Questions
Can I use regular dish soap in the Sun Joe SPX3500?
No. Use a pressure washer detergent compatible with the machine. Avoid dish soap, bleach, corrosive chemicals, solvents, and other cleaning products not approved by the manufacturer. The soap nozzle is required for detergent application.
Can I extend the Sun Joe SPX3500 high-pressure hose?
The included hose is 20 feet long. A compatible, properly rated extension may provide additional reach, but it can affect performance and detergent delivery. Check the manufacturer’s accessory guidance before adding one. A regular garden hose or standard garden hose reel is not a substitute for a pressure-rated extension hose.
Is the Sun Joe SPX3500 easy to assemble?
Yes. The assembly process is fairly straightforward, although some components require the supplied fasteners and basic assembly tools. Follow the manual to install the handle, accessory holders, hose, and spray wand correctly.
Can the Sun Joe SPX3500 clean concrete?
Yes. It can remove ordinary dirt, algae, and surface grime from suitable concrete areas. However, deep oil stains and large driveways may require specialized cleaners, longer cleaning time, or a machine with greater water flow.
Is the Sun Joe SPX3500 safe for washing cars?
It can be used for vehicle washing with care. Start with the 40° nozzle, maintain a safe distance, and avoid damaged paint, loose trim, seals, and sensitive components. Never use the concentrated 0° nozzle on a vehicle.
Does the Sun Joe SPX3500 use hot water?
No. The manufacturer specifies a maximum inlet water temperature of 104°F (40°C). Connecting the washer to a hot-water supply beyond this limit can damage internal components.
What is the difference between the original and revised SPX3500?
The original version is commonly described as a 13-amp induction-motor unit rated at approximately 2000 PSI and 1.09 GPM under normal operating conditions. A newer manual revision lists a 14.9-amp SPX3500 rated at 2000 PSI and 1.1 GPM. Check the model’s rating plate and manual to identify your specific version.
Still have a question after reading this Sun Joe SPX3500 review? Share your experience or question in the comments below.