The Pentair encapsulated 75 gpd rated high volume High-Efficiency Reverse Osmosis Membranes has a waste to recovery rate of 1:1, which means that for every one gallon of water that is made, one gallon goes down the drain.
Note: Most reverse osmosis systems have a waste to recovery rate of five to one, meaning that five go down the drain for every gallon made.
Many people like proactively changing filters to maintain high system performance rather than waiting for degradation.
We suggest changing the 5 Micron, KDF + Carbon every 12 months and the Deionization filters every 24 months, depending on usage and the TDS of the source water.
The High-Efficiency Reverse Osmosis Membrane and Remineralization cartridge (which includes the Coconut Carbon stage) should be changed every 36 months; again, it depends on usage and the TDS of the source water.
All of our PristineHydro® Revival Systems have a Flush Valve, which dramatically extends the life of the High-Efficiency Reverse Osmosis Membrane.
Once a month (depending on usage, more often if you are making a lot of water), open the Flush Valve for 2-3 minutes while the unit makes water. When you open the Flush Valve, you should hear a flushing sound; this flushes out deposits in the membrane.