Standard unit for ½ inch pipes and 1-7 grains of hardness. Uses as much power as a 60 watt light bulb. Has a 10 year limited warranty and come in a moisture resistant enclosure. If not satisfied with results in 30 days return for refund of purchase price minus shipping and handling. A healthier alternative to sodium or salt based water softeners, does not add any chemicals into the water supply. The product uses a special magnetic field to generate mineral crystal grow in water to reduce scale buildup on equipment. The product does not change the ph of the water, and in not doing so, prevents any damage to delicate equipment by changes in the chemical structure or characteristics of the water that may have a negative affect.