0

I have sediment built up in my hot water tank. I'm trying to flush it, based on instructions I've found on the internet. I've turned off the tank completely, attached a hose to the faucet drain and shut off the cold water input line. I've also turned on the hot water in the kitchen sink and bathroom.

But...every time I shut off of the cold water line, within a few seconds, the water stops flowing (both to the kitchen/bathroom and to the drain). By turning the cold water on and off, I was able to get a fair bit of sediment out, but I don't understand why I can't get all of the water out of the tank?

Can anyone tell me what I'm missing here?

  • 2
    It sounds like the drain valve is getting plugged up... – ThreePhaseEel Oct 17 '16 at 3:35
  • @ThreePhaseEel - Thanks for the comment but what I don't understand is why would the drain valve get unplugged when I turn on the cold water going into the tank? – Rob P. Oct 17 '16 at 12:33
2

Open a hot water tap to relieve pressure and plug the drain valve into your garden hose. Turn on the hose for a second (no longer; you don't want to push sediment into the fixtures) to loosen up the sediment.

  • Depending on the amount of sediment, it might clog again. Better off using a length of wire if the drain will accommodate a piece of solid wire. – Mister Tea Oct 17 '16 at 12:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.