I totally agree with Canadian man, our local water is not that bad and even if it is, an R/O unit should remove about 90%-97% of the contaminants. The DI unit removes 99%, that's why you use the R/O unit though to save the DI resins, even if your water is totally crap the R/O DI unit should leave you with <1 ppm TDS. Membrane life and DI resin life is dependant on water source contaminants (assuming your filtering out the chlorine). If you live in the middle of no where, where you're on a well with tons of calcium etc in the water your membranes will need replacing more often than if you live on the wet coast of Canada where our water is super soft.
My opinion is that the membrane must be installed wrong. I had one of the Kent units and the membrane was a stinking tight fit, to tight actually to push in by hand, once I screwed the top on though it worked like a dream.
Doug
|