For instance do you want a hot or cold water pressure washer. In most situations a cold water version is adequate but a hot water washer with an integral boiler will remove stubborn residue more easily (just think about doing the washing up – hot water is much more effective). For even more cleaning power a hot water jet washer can have a facility to make steam which is achieved by a valve reducing the water flow into the boiler causing steam to be formed when leaving the lance. Steam is useful for cleaning very stubborn deposits as well as killing bacteria.
Hot water pressure washers are also available with electrically heated boilers which offer limited temperatures. These machines are normally used where using kerosene is not an option. Deciding on which pressure to buy or hire is complex. This relationship between water flow and pressure is important depending on the type of cleaning being carried out. Reading the technical specification of a washer is fine but is the pump of good quality? Is the hose of the correct rating for the machine and is it long enough for your needs?
Superheated dry vapor Easily kill germs bacteria viruses and eliminate mold dust mites and all other pathogens using nothing but the most natural cleaning method – superheated steam. At the heart of the ONE Plus™ steam cleaner is a highly-efficient heating element that pressurizes the stainless steel boiler up to 4 times the atmospheric pressure. The resulting low-moisture steam is then superheated up to 320ºF / 160°C – perfect for cleaning and disinfection.