Water Pressure
Water pressure is the next difference between portable and a Truckmount carpet cleaning. In order for your carpets to be cleaned effectively, the cleaning solution must be rinsed out completely. If it is not, then the remaining solution will collect soil, causing your carpet to get dirty faster.
A portable is usually capable of 125-150 PSI. A carpet should be rinsed at 300-400 PSI, which a Truckmount is more than capable of achieving; it can go as high as 3000 PSI. The higher PSI helps to agitate the fibers, spots, and oils and soil to better remove them all.