im not following..
most people who think of pressure washing actually think that using high pressure is how to get the job done with the best/most efficient results. that's the basic home owner mentality any way... but they're wrong.
if you correctly use the right mix of solutions and equipment you can get the job done with better time and results.
i just did a ton of research on it and figured out where the "pro" washers were discussing this information, and am doing my best to replicate/improve on what they've already established.
im using a "high pressure" washer, but im using custom nozzle tips that give me much better range (but greatly reduce the pressure). where the standard nozzles can only rinse and soap from maybe 8ft away tops, i can rinse and soap things from nearly 35ft away.
the key is gallons per minute and the right chemical mixtures, not how much pressure im working with.