re: How Long Did Your Tankless Water Heater Last?

No help from me OP. I would hope a big company like Navien would stock parts for thier old units for many years. Doesn't seem like a heat exchanger would be too difficult to replace or wildly expensive but I could be way wrong.

I'm letting other people sus out the lifespan and maintenance over a decade or two before I dip my toe in the tankless world. Even if the concept is good, the quality and tech that goes into them could be following the same path as cars, hvac and appliances.

hope you get a good outcome