How Many Gallons of Water Does a Pressure Washer Use per Hour?

Depending on the model, a pressure washer can use anywhere from 2 to 8 gallons of water per minute. On average, pressure washing services in Bend, OR will use 120 to 480 gallons of water per hour. These numbers are just an estimate, and your actual usage will depend on the model of pressure washer you have, as well as the efficiency of your pump.