Hello DGL1.
Thank you for your thoughtful and detailed feedback. We appreciate you sharing your real-world testing and experience. This 3000 PSI unit is our highest-performing electric pressure washer, designed to deliver strong cleaning power while maintaining the convenience, lower noise, and reduced maintenance that electric models are known for.
If you are seeing lower pressure at the nozzle, there are a few things that can help maximize performance. Ensuring a strong, consistent water supply is key at least 45 PSI, using a 5/8" garden hose, keeping the hose length reasonable, and checking that the inlet filter is clean can all make a noticeable difference. It is also important to purge any air from the system before use and confirm all connections are fully tightened. For increased cleaning power, trying a narrower nozzle (such as a 25° or 15° tip) can significantly improve effective pressure compared to the included 40° nozzle.
Surface cleaners do require a certain combination of PSI and GPM to operate efficiently. Making sure the attachment is rated for this unit and using it on smooth, flat surfaces can help improve lift and rotation performance.
We appreciate your perspective, this model is a strong option within the electric category, and with the right setup, it can deliver excellent results for a wide range of cleaning tasks. If you would like help dialing in performance or selecting the best accessories for your needs, our team is always here to help. They can be reached either using the online chat function, on Greenworks Tools page, or by calling 1-888-909-6757.