a.o. Smith 40000-Grain Water Softener | AO-WH-SOFT-400T

Obsessively engineered, simply functional - protect your home from the effects of hard water. Perfect for 3-4 people. Audible salt alert lets you know when it's time to refill your salt tank. Reduce scale buildup, water stains and spots, improve skin and hair softness, extend the life of your appliances, and preserve your favorite clothing. Salt-sensing technology—adapts to your water usage, allowing for less salt, water and energy use. Designed, engineered and built to last; patented, slim, single-unit design with bypass valve. Power loss protection—backup battery saves your settings in case of power loss.