Booster pump, worth it for me?

[LittleBlueGT]

-My tds on city water 92 ppm
-75 gpd membrane
-Pressure is 60-70 psi going in, coming out it varies from 23-45 psi.

I want to increase the efficiency of my RO unit and use less DI resin.

Will a booster pump give me any appreciable help?



Right now my tds after RO hovers around 10. It starts at 1 or 2, but I don't feel like changing my membranes every 2 or 3 months.

 

[DrBDC]

You are in a good range now. I usually set mine right about 70. Increasing the pressure more "forces" more through the ro membrane. Your membrane should last a couple years although the pre filters should be changed regularly. DI resin is just a function of adding up gallons and tds going through it. It doesn't last as long as most think.

 

[wife no likey]

With that much pressure drop, it seems that you need to change out your carbon/sediment filters.

You should be getting at least a 95% or so rejection out of just your RO

 

[LittleBlueGT]

The TDS of 10 is even when I change my two pre-filters (sediment & carbon).

I think part of the reason is I have 100 feet of 1/4 inch RO tubing prior to the unit that I use to cool my sump and heat my incoming water. I may change that tubing to 3/8 line and see what difference it makes.

 

[LittleBlueGT]

Assuming I can get a good 60-70 psi at the unit, will it still be worth it to get a booster pump?

I think some of them can go up to 120 psi.