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Understanding Performance Number of your carpet or tile cleaning machine

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  • Understanding Performance Number of your carpet or tile cleaning machine

    Understanding Performance Number of your carpet or tile cleaning machine

    Every single machine as a performance number. The higher the performance usually the faster you can clean, with longer hose runs, larger cleaning tools, hotter water, most surface types.
    Performance number is the addition of 3 formulas, Cleaning Units + Vacuum Units + BTU of heat.

    Clean Units is another way of saying speed and most widely used in the pressure washing world If I have pressure washer that is 3 gallons per minute (gpm) and has a max psi of 3000 this formula is 3 gpm X 3000 = 9000 Cleaning units.
    For fabrics (upholstery, carpet, drapes, etc..) usually cleaners clean at 50 psi all the way to 800 psi. The number jet you have on your tool as well as the jet orifice size play a role in the water volume that is placed on the cleaning surface.
    Fabric content, tool shape, and nozzle angle and distance from cleaning surface also play a role it what pressures are safe to clean at.
    Fabric content can be nylon, polyester, polypropylene, acrylic, wool, silk, cotton, rayon, jute,... These fabrics combined with different soil types and contamination that is present require adjusting your water pressure and temperature.

    Vacuum units: is the combination of Inches of water lift and cubic feet per minute (CFM). Water lift is how high you can suck up a solid column of water above sea level until it stops moving at zero cfm. CFM is how many cubic feet of air (a box of air shaped 12" X 12" X 12") that pass through the machine at zero inches of lift.
    The formula is inches of water lift (at zero cfm) X (times) CFM (at zero inches of water lift) = vacuum units.

    BTU of heat refer to a machines ability to use hot water. Either by using already building supplied hot water or boosting that water with heat exchanger, electricity, of a fuel (propane, diesel, kerosene, or natural gas.)

    Every single module system, synergistic system, portable carpet cleaning machine, tile cleaning machine or truck mounted cleaning system have a performance number. We have already posted other articles on this forum that show you how to calculate and compare the hundreds of machines on the market.
    Last edited by Donald; March 25th, 2020, 02:50 PM.