Natural Action Whole House Water Structuring Unit - Produces energized, structured water. Turn your whole house into a pure mountain spring. Also known as EZ, H3O2, 4th phase, and gel water. One time purchase replaces a lifetime of costly and wasteful water filters. This house unit is maintenance free and does not have filters to replace. Immerse your life in structured water - water flows through this house unit in ever accelerating vortices, producing structured water throughout your entire house for drinking water, showering and bathing, soaking your fruits and vegetables, cooking, watering your plants and garden, and filling your pool/hot tub. This whole house unit is easy to install at the point where your water line first enters your house (it can also be placed at a wells holding tank). Professional installation is recommended. Comes standard with 1 inch NPT fittings. The whole house unit reduces hard water mineral deposits, helping maintain the life of plumbing, water appliances and dishware. It comes with a peace of mind 90 day satisfaction guarantee AND a 10 year warranty.