HearthIQ home mascot HearthIQ
The Journal

When was your water heater last flushed? Here’s how to tell.

The HearthIQ Team May 30, 2026 · 5 min read

A water heater rarely fails politely. It usually goes on the coldest morning of the year, and the reason is almost always the same: sediment nobody flushed out in time.

What sediment actually does

Minerals settle to the bottom of the tank and bake into a crust over the burner. Your heater works harder to push heat through it, your bills creep up, and the extra stress shortens the tank’s life by years.

The signs it’s overdue

Rumbling or popping sounds as it heats, water that runs warm instead of hot, or a service record you simply can’t remember. If you’ve lived in the home more than two years and never flushed it, assume it’s time.

Keep the date where you’ll find it

The whole point of a maintenance record is that you never have to guess. Log the flush the day it happens, and HearthIQ will remind you before the next one is due — no mental math, no mystery.

Let HearthIQ remember it for you Give your home a memory — free to start.
Get the app
More from the Journal