The BroadHead H2O water conditioner prevents scale build-up, reduces existing scale and helps reduce corrosion in the home, irrigation system, swimming pool and more. These units work by subjecting calcium in water to alternating reversing-polarity permanent magnetic fields that alter the minerals’ ionic charge. Instead of attracting one another to create scale, they will repel each other and pass harmlessly through the system. It also reduces the water’s surface tension, enabling it to dissolve existing scale as well. The units are proudly made and manufactured in the USA.