an overall higher temperature this was not achieved in prior art devices since there is less temperature dilution due to the length of travel and immediate exposure of the main heat source to other heat sources the heated fluid and resulting heated fluid that is delivered from the cleaning wand of the wand assembly 60 is at a higher overall temperature preferably initially at about 375 u00b0 fahrenheit compared to approximately 250 u00b0 fahrenheit as found in prior art devices this initial temperature differentiation is shown on the charts of fig3 and 4 indeed the inventor learned that the configuration of heat exchangers packaged in a single unitized housing in combination with the application of super heated and heated gases in the described manner resulted in approximately a 30 increase in overall initial temperature of the heated fluid additionally since the portion of the heated fluid from the housing 40 is diverted back to the fluid box 22 is at an overall higher temperature than previously available the incoming water supply is preheated to a higher overall temperature than was previously possible the novel arrangement of the exchangers coupled with the novel supply of organic heated gases also allows for a readily available supply of hot fluid at.