Yes, you should flush your tankless water heater every year.

Draining a hot water heater is an essential part of the ongoing maintenance for your home plumbing system, but many homeowners still don't know how often to drain a water heater or even why you need ...

For most homeowners, a water heater is both critically important and a bit of a mystery. If all goes well, it remains sealed so that we don't know what's going on in there. Water presumably goes in ...