Lowes created a great chart showing the recommended pressure washer pressures for various cleaning jobs.
Here it is:
Chart was found on the Lowes website here.
What is the Best Pressure Washer Then?
You can see that for around the house you can’t go wrong with a heavy-duty or medium-duty. If you want to wash your car with a heavy-duty just be sure to hold the pressure a little further away. For every doubling of distance you move away you half the effective pressure.
Here’s a picture of what happens if you hold high pressure too close to your wood deck:
Image source: http://clarkcountypaintinginc.com/pressure-washing/
- For more information on how to pressure wash check out the PressureWashr How-To Library.