There’s a big difference, due to the combination of the mechanical force of the jet (pressure and flow rate) and the temperature difference generated by the high pressure washer’s internal boiler. The boiler heats the water to a temperature of up to 150 °C, adding the grease removal force of heat to that of the pressurised jet. Hot water high pressure washers are therefore more powerful, and are recommended in particular for washing vehicles and industrial and agricultural equipment. All ARXP high pressure washers are electric and operate with cold water.