Be sure you have a clear pathway to walk around in, too. If your hose gets caught on something sharp, it could puncture it.

In general, wooden window fittings are more susceptible to damage than acrylic or vinyl ones.

If you want to clean your window screens, you can use a garden hose and regular dish soap mixed with water.

If your windows have any hard water spots, try using a commercial window cleaner instead. [5] X Research source

If you haven’t used your pressure washer before, practice using it on concrete before you start using it on your windows. [7] X Expert Source Ben BarlowWindow Cleaning Specialist Expert Interview. 23 July 2021.

Always wear close-toed shoes, just in case the spray goes anywhere near your feet.

The closer you are to your windows, the stronger the spray is. A super strong spray has the potential to crack glass.

Use caution around wooden window trimmings, as pressure washers can damage or chip the wood. It’s important to do this step quickly—since you’re spraying soap and water onto the windows, letting the mixture dry can lead to streaking. Try to start early in the morning, especially during the summer. That way, you can beat the sun, and your soap and water mixture won’t dry before you can rinse it. [12] X Expert Source Ben BarlowWindow Cleaning Specialist Expert Interview. 23 July 2021.

A turbo nozzle sends the water out in a spiral, which can make it spray further away from the pressure washer. That’s why a turbo nozzle is so helpful for reaching the second story. Pressure washers have a little bit of kickback, which is why it’s dangerous to take them on a ladder.

If you’re really worried about streaks, use a squeegee and a microfiber cloth to wipe the clean water off before your windows dry. If you know you have hard water (water full of minerals that can leave deposits on surfaces), attach a water softener to your garden hose before rinsing. [15] X Expert Source Ben BarlowWindow Cleaning Specialist Expert Interview. 23 July 2021. That way, you won’t leave any hard water spots, and your windows will look shiny and clean.