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shimon t1_izmtqt0 wrote

Reply to comment by TheOriginalTerra in Whole-home water filtration to improve appliance reliability? by MDR_25

What parts have you had to replace?

We have an 11 year old Navien combination heat/hot water tankless, and have never replaced any parts in it. There have been a couple of times the hot water flow sensor got jammed up with something and had to be cleaned out for the hot water to flow again. And you do need the approximately annual clean/descale service.

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TheOriginalTerra t1_izpfi01 wrote

Zone valves. More than once. Our system is a year or two older than yours, a Baxi. The plumber who recommended it and installed it didn't offer a maintenance plan and then vanished once he was done and paid, leaving a system that had been installed incorrectly and we had to get other plumbers in to correct his work. Then we had to hunt down a plumber who would work on Baxi units specifically, because that brand isn't in wide use in the U.S. So we got off to a bad start, and our issues aren't all down to the hard water, but as first-time owners in Cambridge, it presented an extra learning curve.

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