According to water temperature, pressure washer can be divided into cold water high pressure washer and hot water high pressure washer two categories. Both the big difference is that added a washer-heating device, typically using combustion heating up the water tank. Using hot water pressure washer can quickly wash large amounts of cold water is not easy to wash the dirt and grease, cleaning efficiency has been greatly improved. But often because hot water washing machine on the high side and high operating costs (because diesel fuel is used), most users may select a normal cold water high pressure washer; of course, in order to improve cleaning efficiency and effectiveness, there are also many professional customers will choose washer.
Grouped by the driving engine, electric high pressure washer, gasoline high pressure washer and diesel pressure washer. As its name implies, these three washing machines are equipped with high pressure pumps, except that they respectively connected to the motor, gasoline or diesel, driven high pressure pumps transport hot water pressure washer. Gasoline engine driven high pressure cleaning machine and diesel-powered washing machine has the advantage that they do not need power to field work.
By purpose, three for household, commercial and industrial classes. First, household pressure washer, pressure, flow and life generally lower (100 hours), the pursuit of carrying light, mobile flexible, simple operation. Secondly, commercial pressure washer, parameter requirements are higher, and uses the number of frequent, long life, so the average service life long. Third, high pressure washer for industrial use, in addition to General requirements, often will have some special requirements, water jet cutting is a very good example. 
