Justified PW 0 Report post Posted August 3, 2017 I have a 3500 psi / 4.5 gpm pressure washer (Diesel Heated) (Belt Driven). I am looking at buying a 20" whirlaway. Will my pressure washer be strong enough to work with this surface cleaner? I am new to the business and learning something everyday. Share this post Link to post Share on other sites
Major7 0 Report post Posted May 10, 2018 I have an 18in and it works fine. Share this post Link to post Share on other sites
