Filter Replacement Matrix
Filter Packs (carbon & sediment filters) should be replaced every 6-12 months or 3,000 gallons, whichever comes first. Easily add a $20 inline pressure gauge to your system to identify pressure drops & know exactly when to change your pre-filters.
Membranes last 2-5 years. Specifically, we replace membranes when they no longer provide at least a 90% rejection rate, to find out we perform a TDS test. TDS testing is easy as dropping a pen in a cup = you can do this! Easily add a $30 dual tds meter to your RODI system to know exactly when to change your membrane & di resin. For under the sink drinking water systems, we recommend THIS tds meter.