SIMPSON® was founded on innovation in 1961 when Jack Simpson created the first 700-PSI gasoline-powered mobile pressure washer. Since then, we have created many industry firsts including a remotely controlled inline chemical injector, an automatic pressure relief valve, a block-style unloader with an integrated pressure-activated valve system, and the first portable pressure washer capable of producing 5000 PSI. We are driven to create new technologies that allow you to get the job done easier, faster, and better than ever before.

Did you know that in 2006 we created a technology that prevents our high-pressure hoses from scuffing or marring surfaces they come into contact with? This innovation improved the industry standard of hoses included with most pressure washers sold today.