To clean concrete, exterior siding or an asphalt driveway, you'll want at least 2,000 to 2,800 psi and 2 to 3 gpm (4,000 to 8,400 ECUs).

What psi should I use to pressure wash my car? For most cars, a psi between 1200 and 2200 is recommended. This range provides enough cleaning power to remove dirt and grime without damaging the car's paint or delicate surfaces. Yes, you can use soap with a pressure washer.

The main difference is that power washing uses highly pressurized steam to do the cleaning while pressure washing just uses unheated tap water, without the help of a heating element.

If you want to clean your driveway quickly and efficiently, use a pressure washer of at least 3100 PSI. Using pressure washers with pressures ranging from 1000 to 2300 PSI will also help you clean your driveway, but it will take a long time.