The answer to 'how often to clean pressure washing' is that most experts recommend pressure washing your home's exterior and other outdoor surfaces every 12-24 months. This helps remove built-up dirt, mildew, and other debris that can damage surfaces over time. Regular pressure washing can extend the life of your siding, decks, patios, and other outdoor elements.
The exact frequency will depend on factors like your local climate, how exposed your home is to the elements, and the materials used on your home's exterior. Homes in humid or coastal areas may need more frequent pressure washing, while homes in drier climates may only need it every 2 years. It's a good idea to inspect your home's exterior annually and pressure wash as needed to maintain its appearance and condition.