Hot water just stopped flowing

Sometimes the check valve on the output of the WH has problems and blocks the flow.

There is a check valve on the hot water outlet that has failed. I recently replaced mine with a brass one.

check valve failure

Whew, lots of good answers there! :B

If you have an outside shower make sure both hold and cold valves are turned off.

azjeffh wrote:
If you have an outside shower make sure both hold and cold valves are turned off.

That wont keep the hot water from flowing. Just makes for a tepid shower.

Perhaps the by-pass valve is in the wrong position. Check to make sure it is set to allow water to flow into the tank.

This happened to me this summer. I was surprised how common this problem is. My problem was the check valve was seized on and I was afraid of breaking something getting it off. So I ended up gutting it with a small screw driver.

If you go this route you will need to add a shut off valve to winterize.

My bi-pass lever is under the sink almost on the floor where you put all your stuff. No matter how much I tell them NOT to put stuff around the lever......at least once a year it gets pushed into the closed position. :R

Frozen line somewhere?