Water softeners last about 10 to 20 years. The lifetime of your water softener will depend on several factors including the type of water softener and brand you buy, as well as the installation. Proper installation is important to ensure maximum effectiveness and lifetime. One of the many benefits of having a water softener installed in your home is that it will extend the lifetime of your other plumbing appliances. Hard water is tough on appliances like water heaters and laundry machines, as the minerals in the water wear away pipe sealants over time causing leaks and clogs. However, a water softener will remove excessive mineral content from all of the water, helping to protect your plumbing and appliances from unnecessary damage.