Most light-duty electric pressure washers will produce 1300-1700 pounds per square inch of pressure (PSI) usually with a water flow of 1.5 gallons per minute (GPM). Medium-duty pressure washers and these are the ones typically recommended by experienced contractors fall between 1900-3000 PSI and will have a flow usually around 2.5 GPM to ensure that they can clean dirty concrete effectively.
2000 PSI is perfect for your residential electric pressure washer, it’ll do all the jobs you’d need without breaking a sweat and those more difficult jobs which a heavy-duty machine is better suited for, it’ll give it’s best efforts, they’ll just take a while.