I just bought this 15" surface cleaner and the Westington House 3400 PSI pressure washer last week. I used both of them yesterday and they worked great. This 15" surface is awesome. It used to take me about 4 hours to pressuer wash my patio and yesterday it took about 50 minutes. This tool is awesome and did a great job cutting through the dirt that was on my patio. I wish I had bought both of these years ago!