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Sun Joe SPX3500 vs SPX4000 - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Sun Joe SPX4000 and the Sun Joe SPX3500.

But before checking out explanations regarding their power, design, and features here's a table that summarizes the main pros of each of these 2 pressure washers:

Sun Joe SPX4000Sun Joe SPX3500
Sun Joe SPX4000Sun Joe SPX3500
  • Higher GPM
  • Lighter
  • Bigger soap tank
  • Far less expensive
  • Higher PSI
  • Higher Cleaning Units
  • More mobile by design
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As the SPX4000 and the SPX3500 are both Sun Joe pressure washers, they benefit from the same overall level of quality and attention to detail.

Power Comparison

  • Fuel: Both units are corded electric washers, offering sustained power for uninterrupted cleaning, making them reliable choices for tackling larger tasks without interruption.
  • Engine & Pump: The Sun Joe SPX4000 and the Sun Joe SPX3500 both feature axial-type pumps, known for their lightweight construction and simplicity. While the Sun Joe SPX4000's pump is driven by a 14.5-amp motor, the Sun Joe SPX3500 utilizes a 13-amp motor.

The following charts are provided to show you at a glance how the main specs of the Sun Joe SPX4000 compare to the Sun Joe SPX3500.

  • Pressure: The Sun Joe SPX3500 generates a higher force at its maximum reachable pressure of 2300 PSI, providing superior dirt and grime removal compared to the 2030 PSI of the Sun Joe SPX4000.
  • Water Flow: The SPX4000 delivers a much higher water flow at low pressure compared to the SPX3500. Offering up to 1.76 GPM (gallons per minute) compared to the SPX3500's maximum flow of 1.48 GPM, it should provide significantly greater effectiveness when rinsing dirt and debris away.
  • Cleaning Power: The overall cleaning efficiency of the SPX3500 is substantially greater due to its 2180 C.U., in contrast to the Sun Joe SPX4000's 1798 C.U.

Design Comparison

  • Design: Considering factors like portability, mobility, and storage convenience, the Sun Joe SPX4000's compact and portable build emerges as the preferred choice. However, the Sun Joe SPX3500's hand truck design offers notable stability and ergonomic performance, catering to specific tasks with precision and ease.
  • Design: Considering factors like portability, mobility, and storage convenience, the Sun Joe SPX4000's compact and portable build emerges as the preferred choice. However, the Sun Joe SPX3500's hand truck design offers notable stability and ergonomic performance, catering to specific tasks with precision and ease.
  • Weight: At 27.8 lbs, the SPX4000 presents a significant weight advantage over the 36.8 lbs of the SPX3500, providing users with improved portability and smoother handling.
  • Maneuverability: The inclusion of wheels on both products greatly enhances their maneuverability. The SPX4000 has a foam-padded handle and the SPX3500 a standard handle, both of which aid in maneuvering.

Feature Comparison

  • Soap Addition: Both washers enable users to mix chemical detergent solutions with the water, enhancing their cleaning performance. Regardless of whether you pick the SPX4000 or the SPX3500, you'll have the convenience of an onboard soap tank, allowing you to store your cleaning chemicals conveniently and keep them at your fingertips during cleaning sessions. However, while the SPX3500 can hold only 0.32 gal of cleaning solution, the SPX4000 offers a larger tank capacity of 0.4 gal.
  • Trigger Gun & Wand: Included with both units is a fairly standard ergonomic trigger gun and a classic wand.
  • Nozzles: Included in the package of both the SPX3500 and the SPX4000 are sets of 5 nozzles, ready for immediate use. Both products offer the exact same selection of nozzles: 0°, 15°, 25°, 40°, and a soap nozzle.
  • Reach: With identical 20 ft high-pressure hoses included, both units provide equal maneuverability around the unit upon purchase. Since both units boast a 35 ft power cord, they provide the same range from an electrical outlet.
  • Storage: Both the SPX4000 and SPX3500 offer an onboard storage, allowing you to keep your nozzles and accessories close at hand for efficient cleaning tasks. Both washers come equipped with a set of hooks, ensuring tidy storage for their high-pressure hoses.

TL;DR

Sun Joe SPX4000Sun Joe SPX3500
Sun Joe SPX4000Sun Joe SPX3500
  • Higher GPM
  • Lighter
  • Bigger soap tank
  • Far less expensive
  • Higher PSI
  • Higher Cleaning Units
  • More mobile by design
Show all offers
Show all offers
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