But because of hassles like inconsistent water pressure and leaks, some people may wonder if pressure washers are actually worth buying. Such issues might give you a negative view of all pressure washers. Even if you're a homeowner, you have the right to purchase commercial-quality power washers and other tools and equipment to match your high-demand jobs. Typical commercial power washers could deliver two to four times the pounds per square inch (PSI) of water pressure of residential units. Residential pressure washers may require you to take breaks a couple of times an hour to prevent overheating.