[Update Nov 2019] Are you having Navien problems? I personally had a Navien combi-boiler installed in my family home in 2016 and couldn’t be happier with the decision. We have had zero issues with the system and it continues to perform flawlessly. At the bottom of this page are over 100 comments with people describing issues and Navien problems they are having with their tankless systems. In my opinion (which is exactly...