Ive heard of those but not seen one yet...
couple probs would have to be overcome, first.. the hot water tank is going to be at full house pressure, so the membrane's waste water will have to be pumped up to a pressure higher then that to work, then you will also have to isolate the membrane from this high pressure
however, if their system is set up correctly...
imho go with a basic system, add a permeate pump and 90% shut off valve if you want better then average performance.. really nice system with no electrical pumps, solenoid valves or pressure switches required
remember, parts that arent used cant break down
couple probs would have to be overcome, first.. the hot water tank is going to be at full house pressure, so the membrane's waste water will have to be pumped up to a pressure higher then that to work, then you will also have to isolate the membrane from this high pressure
however, if their system is set up correctly...
imho go with a basic system, add a permeate pump and 90% shut off valve if you want better then average performance.. really nice system with no electrical pumps, solenoid valves or pressure switches required
remember, parts that arent used cant break down