A family of 4 with 10 GPG hardness needs a system that can remove 3,200 grains per day .
Homes with 3 or fewer people usually need a 20,000-unit capacity ; 4+ people usually need 30,000+ units . 3. Choose Your Technology water softener buying guide
Uses electromagnetic fields to alter mineral behavior. Often the most expensive to install. 4. Consult the High Council (Top Brands) A family of 4 with 10 GPG hardness
These don't remove minerals but "crystallize" them so they don't stick to pipes. Great for those on low-sodium diets. Choose Your Technology Uses electromagnetic fields to alter
Purchasing and Maintaining A Water Softener | Department of Energy
The story begins with a simple test. Before buying, you must know your water's hardness level, typically measured in . Soft Water: 0–3 GPG Moderately Hard: 3.5–7 GPG Hard: 7.5–10.5 GPG Very Hard: Over 10.5 GPG 2. Size the System for Your "Tribe"