RO Membrane replacement?

[Circle10]

How often do you guys replace your R.O membrane filter ?? 2years? My incoming tds is 280+Ppm /out of RO is 5ppm /out if DI is 0 ppm , mines past 1year 3 months . Putting in a BRS order for filters should I just do them now or wait for 2 year mark ??asking because I've Had some funky sps RTN can't put my finger on other than Alk rise month ago ..

 

[Confuse]

It really depends on how much use you put on the unit, but I typically shoot for 6-12 months. I think the sooner the better because the sediment filters can get clogged up and possibly damage the membrane.

 

[JavaJacketOC]

How often do you guys replace your R.O membrane filter ?? 2years? My incoming tds is 280+Ppm /out of RO is 5ppm /out if DI is 0 ppm , mines past 1year 3 months . Putting in a BRS order for filters should I just do them now or wait for 2 year mark ??asking because I've Had some funky sps RTN can't put my finger on other than Alk rise month ago ..

Looks like you're getting about a 98.3% reject rate, that's pretty good. Your TDS is relatively low for tap water (at least compared to my area where it's in the 500's). I wouldn't worry about replacing your Membrance until you're 3-4% off of what it should be rejecting, at which point you'll probably start burning through DI Resin faster. I believe a lot of the better membranes are 99% reject so you're still pretty close to that. If you can get it on sale or something you could buy and save for later. BRS ships free so no rush to get it now, IMO.

Edit: I replace mine when I'm getting 96% or less rejection.

 

[solitude127]

I agree with what javajacket said. 98% is not bad.