Bradford White Corp. announced all PowerStor Series™ Single Wall and Stainless Steel (SS) residential indirect water heaters now offer a limited lifetime tank and heat exchanger warranty. The new policy also covers any water heaters from this series sold to date. The water heaters are universal mates for a boiler and feature super-efficient heat exchangers, carbon steel, Vitraglas® coated coils for the single wall units and stainless steel coils for the stainless steel units. Sizes range from 30-gallon residential to 120-gallon commercial.