The answer to 'pressure washer moldy' is that a moldy pressure washer is often caused by improper storage and maintenance. When a pressure washer is not properly drained and dried after use, water can remain in the hose and pump, leading to mold and mildew growth. This can result in a foul odor and potentially clog the system.
To prevent mold, it's important to thoroughly clean and dry the pressure washer after each use. This includes disconnecting the hose, running the engine to expel any remaining water, and storing the unit in a dry, well-ventilated area. If mold does develop, it's best to call a professional cleaning technician to properly disinfect and restore the pressure washer.