Tom Bosley -- who famously played Mr. Cunningham on  Happy Days  -- died this morning at a hospital in Rancho Mirage, CA ...
Average estimates: $250 to $420. Power washers can have pressures of 4,000 psi (pounds per square inch) to lesser pressures of maybe a few hundred and run by gas or electric. This means that professionals will probably use one with less pressure to clean a deck and maybe one with higher pressure to clean a patio.
Typical Pressure Washing Costs: 1  You can buy a basic pressure washer for anywhere from $75 to $500, which may be cost-effective if you intend to use the pressure washer frequently. 2  Otherwise, you may be better off simply renting one for a short period, which can run from $40-$75 per day.