Greenworks Pro Brushless 3000 PSI 2.0 GPM Max / vs Simpson 3400 PSI Gas Pressure Washer, 2.5 GPM
Updated August 2026 — Greenworks Pro Brushless 3000 PSI 2.0 GPM Max / wins on accessories, Simpson 3400 PSI Gas Pressure Washer, 2.5 GPM wins on power and flow rate.
The Simpson 3400 PSI gas pressure washer offers higher pressure and flow rate at a lower price, making it a better choice for heavy-duty cleaning tasks. However, the Greenworks Pro is quieter and more compact.
Why Greenworks Pro Brushless 3000 PSI 2.0 GPM Max / is better
Noise Level
Electric model is quieter.
Compact Design
Foldable handles for easy storage.
Maintenance
Less overall maintenance required.
Why Simpson 3400 PSI Gas Pressure Washer, 2.5 GPM is better
Pressure
Higher PSI of 3400.
Flow Rate
Delivers 2.5 GPM.
Price
Lower price at $329.00.
Overall score
Specifications
| Spec | Greenworks Pro Brushless 3000 PSI 2.0 GPM Max / | Simpson 3400 PSI Gas Pressure Washer, 2.5 GPM |
|---|---|---|
| Power Source | Electric | Gas |
| Engine | N/A | 208 cc CRX |
| Nozzles | 4 | 4 |
| Warranty | 3 years | 2 years |
| Assembly | Easy | Moderate |
Dimension comparison
Overview of Greenworks Pro Brushless 3000 PSI and Simpson 3400 PSI Gas Pressure Washers
The Greenworks Pro Brushless 3000 PSI is geared towards those who prefer an electric power washer, while the Simpson 3400 PSI is a gas-powered option that offers higher pressure. Each model has its strengths, catering to different user needs. The Greenworks model is priced at $499.99, while the Simpson comes in at $329.00, making the latter about 34% cheaper.
Power and Performance
In terms of power, the Simpson 3400 PSI gas pressure washer boasts a higher PSI rating of 3400, compared to the Greenworks Pro's 3000 PSI. This translates to more effective cleaning for tougher stains and larger areas. The Simpson also delivers 2.5 GPM, which is 25% more water flow than the Greenworks' 2.0 GPM. This higher flow rate allows the Simpson to tackle larger surfaces more rapidly, making it ideal for significant cleaning tasks such as driveways and decks.
Mobility and Ease of Use
When it comes to mobility, the Simpson pressure washer features 10-inch pneumatic tires that enhance mobility over various terrains. This makes it easier to transport around your property or to job sites. In contrast, the Greenworks Pro is designed with foldable handles and multiple grab points for easy maneuvering but lacks the same robust wheel system. Thus, while both models are portable, the Simpson offers superior ease of transport, particularly on uneven ground.
Design and Build Quality
The Greenworks Pro is constructed with a rugged steel frame that ensures durability, while the Simpson also features a powder-coated steel frame designed to resist corrosion. Both models are built for longevity, but the Greenworks' design emphasizes compactness with its foldable handles. In contrast, the Simpson's design is more traditional, focusing on stability and ease of assembly, which can be appealing for those who prefer a straightforward setup.
Accessories Included
Both the Greenworks Pro and the Simpson pressure washers come with a variety of accessories to enhance their cleaning capabilities. The Greenworks model includes a turbo nozzle and three additional tips (15°, 25°, and 40°) along with a soap nozzle, which provides versatility for different cleaning tasks. The Simpson matches this with four quick-connect nozzles (0°, 15°, 40°, and soap) and an ergonomic spray gun. The inclusion of multiple nozzles in both models is a significant advantage, allowing users to adjust their cleaning approach based on the task at hand.
Noise Level and Environmental Impact
Electric pressure washers like the Greenworks Pro are generally quieter than gas-powered options, making them more suitable for residential areas or situations where noise is a concern. The Simpson, being gas-powered, will operate at a higher noise level, which might be a drawback for some users, especially in noise-sensitive neighborhoods. For those who prioritize a quieter operation, the Greenworks model is the better choice.
Maintenance Requirements
The Simpson pressure washer features a maintenance-free OEM Technologies axial cam pump, which is a significant convenience for users who prefer minimal upkeep. In comparison, electric models like the Greenworks generally require less maintenance overall but still need regular checks on the electrical components and water connections. This means that while the Greenworks may have an edge in everyday usability, the Simpson's maintenance-free pump could save time and effort in the long run.
Price and Value
With the Greenworks Pro priced at $499.99 and the Simpson at $329.00, the Simpson offers a lower upfront cost, making it appealing for budget-conscious consumers. This price difference of about 34% may influence your decision, especially considering that both models deliver strong performance for residential cleaning tasks. The Greenworks model does offer additional features and a slightly lower PSI, which some users may find worthwhile depending on their specific cleaning needs.
Which should you buy?
Choosing between the Greenworks Pro Brushless 3000 PSI and the Simpson 3400 PSI gas pressure washer ultimately depends on your specific needs. If you prioritize higher pressure, better flow rate, and mobility over various surfaces, the Simpson is the clear choice, especially given its lower price of $329.00. On the other hand, if you prefer a quieter electric option with a focus on compact design and ease of use, the Greenworks Pro at $499.99 may be worth the investment. Each model has its unique strengths, so consider your cleaning tasks and environment carefully before making a decision.

