I agree with Down2sea, I have a 3000PSA unit, mine is driven by a 7.5 HP electric motor, but a gas driven model makes them more portable. I also have the hot water option and wouldn't be without it. Mine runs off 110 and burns either diesel or kerosene. Makes cleanup twice as fast. It is wise to get a variety of tips as no one tip is perfect for everything. I even have a rotary brush unit that works great with hot water and injecting soap.
