4 stage RO/DI needs changing but which filter(s) ??

kien · #1 02-26-2010, 04:57 PM

Quote:

Originally Posted by globaldesigns

All I can tell you is when mine started to creep up on the TDS meter, I replaced the carbon and filter media's (NOT the membrane) and it didn't change much. I then changed the membrane and all was good.

So in my experience the membrane would be it, at least to start. However the other ones are fairly inexpensive, so you can always do them all.

Thanks! It almost sounds like I should just replace them all!

christyf5 · #2 02-26-2010, 05:14 PM

LOL, pretty much. Depending on heavy use or what the TDS is like going in, its probably best you replace all except for the RO. You could just try replacing the carbon and micron filters and see what you get for TDS after that but if its been awhile since you've changed the DI it might be a good idea to change that out too.

kien · #3 02-26-2010, 05:18 PM

Quote:

Originally Posted by christyf5

LOL, pretty much. Depending on heavy use or what the TDS is like going in, its probably best you replace all except for the RO. You could just try replacing the carbon and micron filters and see what you get for TDS after that but if its been awhile since you've changed the DI it might be a good idea to change that out too.

so in other words I should/need to change out all my filters!

christyf5 · #4 02-26-2010, 05:22 PM

LOL I guess. I usually start with the canister filters, then check the TDS, then replace the DI if it needs it. Lastly comes the RO if the others don't fix it. No sense in spending the money on a new RO if you don't have to.

kien · #5 02-26-2010, 05:24 PM

Quote:

Originally Posted by christyf5

LOL I guess. I usually start with the canister filters, then check the TDS, then replace the DI if it needs it. Lastly comes the RO if the others don't fix it. No sense in spending the money on a new RO if you don't have to.

Ya good point about the RO. I did read that those should last a while longer than the other resins. Guess that's what I'll be doing this weekend, hunting filters.

Thanks!

MrsBugmaster · #6 02-26-2010, 05:31 PM

Membranes usually last 2 to 3 yrs. I'd change all but the membrane.

Piscez · #7 02-26-2010, 06:03 PM

My Manual says change the canisters after 6 months and the others after 1 year, course isn't this all dependent on our originating tap water supply quality?