Pressure washers deliver focused jets of water to loosen and remove dirt, grime, and other deposits from buildings, pavement, and equipment. Also known as power washers, these pressure cleaners reduce or eliminate the need to scrub surfaces or use cleaning agents. Electric pressure washers plug into an electrical outlet to provide consistent power for extended use with no fumes and quieter operation than gas units. Gas pressure washers have a gas-powered engine, so they don't have a power cord to limit mobility. Cordless pressure washers run on batteries, so they are quiet like electric washers and mobile like gas washers.