Was talking to the Culligan guy here in town and he said that the on demand systems aren't good if your running off lake water that is put through a filtration system, reverse osmosis to be exact? Can anyone confirm this?
We didn't go tankless at our place. The advice I got was not to go tankless because the system would be off for significant periods, and drained and winteized every year. My brother in law (a licensed plumber) said that he has dealt with a few problems with them in seasonal cottages in remote locations.
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