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Old 08-07-2008, 10:25 PM   #1
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Lifetime of RO membranes

I have a 100 GPD membrane in my RO filter, and I usually output no more than 7 gallons of water per week. The manufacturer recommends changing the membrane every 2-3 years.

Since I run so little water through it, will the membrane last even longer than 3 years? If so, about how much? Just trying to save a little $$$.

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Old 08-08-2008, 08:21 AM   #2
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Get a TDS meter and when you see the TDS start rising it's time to change the membrane.
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