An average sized family should plan to replace their filters annually. The life of ceramic filters can be extended with a monthly cleaning with an abrasive pad under cold water. The filters are effective for one year or 600 gallons.
DOULTON UNIT OWNERS: We have you covered!
Countertop Units - You can either purchase item #107008 as a direct replacement for your UltraCarb filter (old item# 03834)
OR consider upgrading your system by purchasing a CeraMetix filter (item# 107003) and start removing fluoride & heavy metals!
Under-counter Units -
You'll need item# 107008 CeraCarb Filter (replaces UltraCarb (old item# 03834)
AND item #107009 Fluoride/Heavy Metal Filter (replaces old item#'s 03835 or 03839)