Once a year…I’m lazy so I pay 65$

I flush my gas tankless every year. Important to keep the pipes clean to speed up heat transfer.

$450?, Once a year Lowes and sometimes Home Depot literally gives away hot water heaters that are discontinued. Last year we got one for my neighbor for $200 and we installed it ourselves.

Bought a flush kit. So easy even a caveman could do it. Vinegar as the cleaning solution.

We recently had ours flushed for the first time at the suggestion of our plumber. Evidently, extends the life of the heater. We won't do it yearly probably, but I can see where it may be good for the heater. We have a water filtration system so maybe we won't have as much sediment and mineral deposits???

Water heaters, gas and electric both should be flushed once a year. Easily done by opening valve at bottom of tank and running for a few minutes. The sludge that comes out is a combination of minerals and decaying anode rod. Replacing anode rod every 5 years is a great way to extend the life of your heater.

Flush Water Heater
 

I flush my electric water heater every month. I drain about 5 gallons out every month to remove the sediment that builds up.

Apparently you neglected to read the thread before replying.

Just be careful and make sure when you shout off the faucet on the tank.
no sediment is trapped in the washer valve.
If there is, it will cause a leak after you turn the valve off.

Be careful? How?

Not sure what you’re insinuating. Original post asked about flushing water heaters, I answered.