Mobile system cleaning apparatus

A cleaning apparatus for supplying a heated water fluid for cleaning;

• said apparatus comprising:
• a) primary heat generating means;
• b) a primary heat exchanger adapted to cooperate with water supply means so as to operably receive water therefrom and transferring heat produced in said heat generating means to the water received therein so as to produce the heated water fluid;
• c) a cleaning assembly having a cleaning head flow connected to said primary heat exchanger and adapted to use said fluid for cleaning at a use site;
• d) vacuum producing means flow connected to said head and selectively producing a vacuum at said head to withdraw reclaimed fluid from the use site;
• e) collection means for collecting a dirty water portion of the reclaimed fluid;
• f) a secondary heat exchanger flow connected to an exhaust of said vacuum producing means and receiving hot gases passed through and further heated by said vacuum producing means;
• said secondary heat exchanger also receiving and heating water to be heated prior to said primary heat exchanger with said vacuum producing means exhaust so as to preheat the water;
• g) said heat generating means being an internal combustion engine having at least one exhaust port for exhausting engine exhaust gases;
• h) said primary heat exchange being positioned to receive said engine exhaust gases substantially directly from said exhaust port;
• and
• i) piping means for flow connecting said engine exhaust gases, after passing through said primary heat exchanger, with the vacuum producing means exhaust prior to said secondary heat exchanger, such that residual heat in said engine exhaust gases subsequent to said primary heat exchanger partially preheats the water in the secondary heat exchanger.