The answer to 'why is my pressure washer buildup' is that there are several common causes, including mineral deposits from hard water, clogged nozzles, and improper storage. These can lead to reduced water pressure, uneven spray patterns, and other performance issues.
Mineral buildup is one of the most frequent problems, especially in areas with hard water. Over time, these minerals can accumulate in the pump, hoses, and nozzle, restricting water flow and causing the pressure washer to lose power. Clogged nozzles can also contribute to pressure loss and uneven spraying. Improper storage, such as leaving water in the system, can lead to corrosion and mineral buildup as well.