I’m planning on starting a pressure washing business with my brother and had a few questions about my setup. I am hoping to do commercial (fleet, parking lots, etc.) and residential work (roof, house, driveway, etc.). I’m planning on running two 8 gpm 3500 psi hot water pressure washers on a flat bed truck with a 200 gallon tank, and I’m planning on downstream injecting chemicals using a proportioner.
Do I need two 8 gpm hot water machines or is that overkill?
How many chemical tanks would be ideal, what size, and what chemicals?
What diameter hose would be ideal for an 8 gpm machine? Is 3/8" sufficient or would I need 1/2" or 5/8" for these machines?
Do I need a pump to pump the chemicals for downstream injection? What kind of pump?
Do I need a transfer pump on this setup? I’ve read a bit but don’t really know what it is.
Do I need to/how do I extract used water or chemicals?