Yes you make up water has a lot to do with it I'd look at a new carbon filter if you are on treated city water ? But a filter gets more efficient as it plugs up anyways and the D/I also helps you and 4 to 5 yrs I'd say was average if left in place and used often.
I have a friend in N.J on a 100 GPD he can get 3 maybe 4 gallons and the membrane is solid plugged up and fouled and thats running as much rejection and one can and still push a few drops past the membrane and a D.I refill will fill a bucket and its wasted.. I'm getting set up now to put a whole house in for him.. My son just set a 15,000 GPD units in a new Tobacco factory going up for their labs (: and all that water what is not used on its first trip down the closed loop recirculation system is r/o DI and used for the buildings toilets and or refiltered for the labs depending on the demand . _________ Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible (Doug Larson) |