Bscalewatcher 4 star ReviewbP PP scalewatcher 4 star PRemoves scale build up in hot water heaters, saving energy costs.PGives soft water feel without salt or cartridges to replace.PWorks on all types of pipes (PVC, Pex, Copper, galvanized, flex pipe, rubber hose, etc.).P1 year Satisfaction Guarantee, 10 year product warranty.