How does Vaughn build the longest lasting water heaters? HydraStone™ cement lining offers tank protection like no other. Typical glass or epoxy-lined tanks require an anode rod, a part that needs regular replacement. HydraStone cement lining provides full interior coverage at a minimum 1/2 inch thickness, 100 times thicker than fragile glass. It outperforms glass and epoxy in all water types— zero anode rod needed. Simply put, our tanks last decades with lower lifetime costs than the rest.

HydraStone works by absorbing water and stripping out the oxygen. This forms an inert barrier that protects the steel tank. Because it expands at the same rate as the tank, the lining won’t crack or come loose. Easy to repair, and built to save money, HydraStone means dependable water storage. HydraStone lining is featured in Vaughn domestic and commercial-grade water heaters, including Vaughn indirect, electric, hybrid/heat pump water heaters, and our buffer tanks.