Carbon Dioxide is expelled and absorbed in the water during the crystallization process.  This causes Carbon Dioxide to react with existing limescale crystals and to break away from surfaces within the plumbing system.  Water hardness is necessary for this process to occur.

  1. First Flow-Tech Home forms suspended seed crystals.
  2. Seed crystals expel carbon dioxide   Ca + (HCO3)2      CaCO3 + CO2 + H2O.
  3. This newly formed Carbonic Acid (CO2 dissolved in water) slowly dissolves existing scale*.
  • Due to this reaction, small limescale particles may break free from your home’s plumbing network and therefore require cleaning of faucet screens and filters.
  • Limescale particles most commonly have the appearance of grains of sand.
  • Some of these dissolved minerals will return back into solution.  The “hardness” may actually increase in your water during this phase.
  • The rate at which this de-scaling may happen is dependent on many different variables which include but are not limited to flow rate, system pressure, volume of water used in the household, mineral makeup (temporary scales vs. permanent scales), amount of existing buildup, existence of non-ionic minerals (iron, etc.) amount of hardness in the water supply ( harder water provides faster descaling).
  • It is recommended to blow-down or drain your conventional hot water heater about 6 weeks after the Flow-Tech Home installation,  to remove de-scaled particles from the system.
  • If water is softened with an ion exchange system this reaction will not occur.


Over 80% of American homes have hard water. Hard water contains dissolved calcium and magnesium. When these minerals enter your home and are subject to pressure and temperature changes, the water becomes super-saturated and encrusting limescale is formed.

Before Flow-Tech Home, home-owners have been forced to use harsh salt and chemicals or unreliable and inconsistent magnetic coil devices.


Problems caused by limescale buildup.

• Causes increased energy usage (by insulating heating coils or tubes and coating the temperature sensor that triggers your heater to “fire” more than necessary)
• Limits water flow
• Promotes corrosion
• Plugs faucet screens and shower nozzles

The trouble with traditional water softeners.

• Harmful to the environment
• Promote corrosion
• Labor intensive and costly to maintain
• Banned in many U.S. counties and municipalities