K'ledgeBldr
Well-known member
Surface cleaners have different PSI ratings- @2300, I'd stick with the smaller 15". It's rated to 4500-I have a 6.0 hp, 2300 psi power washer
I have the "SurfaceMaxx" 15" on wheels. The biggest difference for me was the back! Cleaning with just a wand would kill my back in about an 1-1/2hrs. With the surface cleaner I can stand pretty much upright- just switch hands often- doesn't require a lot of physical force to move around.
