Leave it to an Expert
Pressure washing can be a surprisingly dangerous endeavor.
Improper use or installation of parts can cause massive pressure-based explosions which can injure the operator or unaware passers-by.
With gas models you must be concerned for CO2 levels and fire hazards, and with electric models you have to watch out for electrocution.
Special equipment should be worn, including ear-muffs because hearing loss is easily possible.
If you are a business trying to do your own pressure washing, you'll need to carry the proper insurance and keep MSDS sheets on hand for any chemicals you may use.
Why bother with all that hassle? Bill the Buffman offers you an affordable alternative!