The Mazzoni firebox is a great product for converting cold water to hot water when more effective cleaning is required using a pressure washer. The unit is electrically powered and diesel heated, the Mazzoni firebox has the ability to heat cold water up to 150 ° C. This is a 25 Litre, 12 V unit, which has a stainless steel cover on a powder coated steel frame. The unit gives high performance with low fuel consumption and has a control panel with switch and thermostat to regulate the temperature. It also features flame control, flow switch, level switch, LED alarm, safety valve and hours counter display.