Simpson has been manufacturing high quality pressure washers for over 50 years. Simpson Cleaning Systems is one a select few pressure washer manufacturers that actually fabricates the majority of their own parts from raw materials. Our engineers choose the highest quality raw materials and put those materials in the hands of craftsmen people who know and understand what it takes to build long-lasting, high-quality machines. They are equipped with modern tools and fixtures which not only enhance productivity, but contribute to the process of building each machine in a consistent and reliable manner.