I live in northern Michigan and building a new home. I was told the well water here is too hard for a tankless heater for proper operation. True of False? Any recommendation?
Good water softners help a lot. The well we are on is nasty, heavy iron content in it. We have an iron filter and a 50K grain softner. After installing both I tested the water and found the hardness was down to acceptable levels for a tankless heater. I forgot what the measurements were though, that was 2 years ago. So far havent had a problem with it, nor have I seen any buildup around my faucets like I did before installing the softner/filters.