On high pressure cleaners with a burner, the dirt removing properties of water pressure and, if necessary, detergent are further improved by the ability to heat water. Such hot water units have a number of advantages:

• Oil, grease and other types of soiling are removed much more easily and quickly. In some cases, there is no need for detergent at all.

• In the steam mode (boiler temperatures of up to 140°C) sensitive surfaces can be cleaned at a reduced pressure. Pathogenic micro-organisms are effectively reduced before subsequent disinfection is carried out.

• As the steam mode works with reduced water quantity, it is also suitable for sandstone, mineral plaster and other porous natural materials, which are hygroscopic.

• The surfaces cleaned heat up and dry faster.

Compared with cold water units, cleaning times can be reduced by 40 to 60% in practice by using water heated to 80°C, and the results are better. It is obvious that, with time saving of this kind, a hot water unit quickly pays for itself.

A word of advice on burner technology: When buying a hot water high pressure cleaner it is important to make sure it is a low emission unit, i.e. it must comply with the applicable emission regulations. Upright burners with continuous ignition are particularly effective in achieving a high degree of efficiency, as no un-burnt fuel can settle at the bottom, and there is less condensate.

Many units can be run on environment friendly biological diesel fuel, if required. There are electrically heated high pressure cleaners with no emissions for special applications in bathroom rooms/toilets and in the food and beverage industry.