Why Rent from High PSI, Ltd.. High PSI rents industrial grade pressure washers by the day, week, and month. Every pressure washer rental includes a 50’high-pressure hot water hose, gun, wand, and nozzle. Hot water pressure washer rentals listed below have oil fired burners. High PSI has many different types of pressure washers in stock. If your rental needs differ from the options below, please call us or stop by to inquire about additional options.