Annode / WH plug

[Terryallan]

Won't come out. So I opened the low point drains and let the water out that way. On my old TT, that drained the WH as well. But I really can't tell on this one, If the WH drained or not. I can say. Water ran out of the low points for a good long time.

Then blew out the lines, with all by pass valves open. Only got air out of the faucets. Think I'm good to go

[Old-Biscuit]

When draining via low point drains did you open the PRV on water heaater?

Suburban WH? Use a 1 1/16" socket or 27mm socket.
Try to tighten drain plug just a little before trying to remove. You may need a 'cheater bar'

You should remove more frequently and use teflon tape or anti-seize on plug threads

[downtheroad]

I don't know Terry...I'd do what it takes to get that plug out and make sure.
No need to tell you what a cracked water heater tank will cost you...
Good luck with it.