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Best deal I've found.

http://www.ebay.com/itm/20-Whirl-A-Way-Flat-Surface-Cleaner-Pressure-Washer-/220758130537?pt=LH_DefaultDomain_0&hash=item336635bf69

check out the Ground Force it rocks

the surface cleaners with 4 spinning casters are far better than fixed wheels, no comparison

http://store.spraymallstore.com/   has some good deals on Power Washers

Roof Cleaning Tallahassee wrote:

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I ended up with a 3700 psi, 4 gpm, with a 13 hp honda. Now in the market for a descent entry level surface cleaner. Any suggestions for the specs above? (Ray...do you have one laying around your shop that you need to get rid of?)

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That's what I started out with years ago and it is sufficient, if you don't run them all day 5 days a week. But I assume, you are talking about a direct drive. The next step would be to go up to a 5.6 GPM TS2021 pump with double pulleys. I have 2 of those with 13hp Hondas and also one ts2021 with an 18hp engine and a 16hp all with electric start engines.

I have one machine I am about to put up for sale locally, that has a 4.9 GPM pump / direct drive 13hp honda engine.

You can clean roofs with a 1.8 GPM ShurFlow pump and 1/4" hose and a little ball valve. You can successfully run a small pressure washing business, with a Home Depot $999.00 4 GPM direct drive pump on a 13hp engine. Anything less, and you are working way to hard for your money and if you have enough work, you will lose the difference in cost, between a $999.00 HD machine and a professional Pulley driven 5.6 GPM machine. They will all put out 3500 psi-if you want that. For most of my work, even with the 18hp I run at 2500 psi. The more psi you crank it down to, the less water flow you get. Water flow does a LOT of the work! {Just  a guess- a $999.00 4 GPM HD machine, set at 3500 psi probably puts out more like 3 GPM at 2500 you will get closer to the 4gpm. I have done tests with my TS2021 5.6 GPM pumps and the psi changes output drastically! Used in business, you will probably change out pumps [if you do it yourself ] at $100.00 a year. I have TS2021 pumps [which cost $600.00 each ] that have run steady for up to 8 years with no { sorry Mr Customer, but my machine is broken, I will be back when I get it fixed } I carry 2 machines at all times. A bolted down 18hp in the truck bed and a 16hp in my trailer.

Just like I have a double softwash 5gpm Delavan setup in my trailer. If one quits, I unplug the quick connect and plug it into the other one and fix or replace the broken one after work. Some things that appear to costly in business are really the cheaper way to go in the long run-besides having the pleasure of working with good equipment.

I bought every pressure washer used and sold the 4gpm pumps they came with and replaced them with new TS2021 pumps. Actually, 2 I got at Home Depot, that were returned $999.00 machines marked down to $600.00 and replaced the pumps. The 16hp I bought used as it is and the 18hp I built from an 18hp motor, about 7 or 8 years ago. Everything was new except the motor and NOTHING-not even the unloader, has ever broken [oh ya, the belt did twice. It uses a wide toothed belt.

I use all General TS2021 5.6 gpm pumps and that's after trying most everything since 1989.
But I have never had larger than 10gpm / 20hp Honda.

OOPS, Didn't notice I had already answered this!