The water softener mainly uses ion exchange resin to remove calcium and magnesium ions from water and reduce water hardness. Another technique is the physical water softening method that differs from chemical ion exchange. It involves using high-energy polymer spheres to encapsulate calcium and magnesium ions in water into crystals that exist in the water, preventing them from scaling. The main technology is nanocrystalline technology. Compared to tap water, soft water has a very distinct taste and feel.