Pressure washers are great for all kinds of stuff around the house, like washing exterior walls and windows, garden tools, patio and sidewalk surfaces, and much, much, more! Now, buying a unit may be cheaper than renting one: home-sized units are available for two to five hundred dollars. (REMINDER: for smaller jobs, stick to units rated at about 1000 pounds per square inch; for big jobs, like blasting your driveway clean, go for the gusto - 1500 to 2000 pounds per square inch is your best bet.) And that's the On The House tip for today.