Flushing a Gas Water Heater

November 08, 2026, 07:55 AM

Powers77

There seems to be a fair amount of debate around the necessity of doing this but I'm planning to do it regardless.
In my research I'm seeing a "Sediment Buster" product that looks like a good option to improve my results.
On most all of the videos I've watched it shows shutting off the gas and then having to relight the pilot once you have refilled and are ready to return to service.
Being the lazy cuss that I am, I question if I couldn't safely just turn the thermostat to "Off" during the cleaning process. I plan to keep some water in the tank at all times so there would never be heating of an empty tank.
Thoughts?

November 08, 2026, 08:03 AM

Warhorse

I have never flushed a water heater whether it's gas or electric.

November 08, 2026, 08:12 AM

rexles

That should not bother a thing

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November 08, 2026, 08:23 AM

chellim1

quote:
Being the lazy cuss that I am, I question if I couldn't safely just turn the thermostat to "Off" during the cleaning process. I plan to keep some water in the tank at all times so there would never be heating of an empty tank.
Thoughts?

Same. That's how I've done it.
I do think there is some benefit to flushing it, even if it's minor. It probably preserves the life of the tank somewhat.

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November 08, 2026, 01:34 PM

bryan11

Our gas water heater at around 8 years old wasn't getting as hot, so we flushed it and got a lot of dark sediment out. It worked great for many years after that.