The answer to 'pressure washer cleaning frequency' is that most experts recommend pressure washing your home's exterior, driveway, and other outdoor surfaces at least once per year, and potentially more often depending on your local climate and the amount of dirt, grime, and mildew buildup. Regular pressure washing helps remove built-up dirt, mold, and other contaminants that can damage and discolor surfaces over time.
For best results, it's generally recommended to pressure wash in the spring or fall when temperatures are moderate. This helps the surfaces dry quickly and prevents potential damage from freezing water in the winter or excessive evaporation in the summer heat. The exact frequency may need to be adjusted based on factors like the age and condition of your home, the amount of tree cover or shade, and how exposed the surfaces are to the elements.