water heater leaking from top and my electric hot water heater is leaking on the top around the cold water inlet and from the top seam, WHY?

water heater leaking from top:

water heater leak

Question by bearlakebell: my electric hot water heater is leaking on the top around the cold water inlet and from the top seam, WHY?
I shut the water supply to the heater off to replace a leaky hot water tap in the bathroom. When I truned the water supply back on, it started leaking around the cold water inlet on the top, not from the valve, it appears to be bubbling up from small pin holes. It is also leaking from the seam around the top of the heater, almost like it is too full. What happened and what do I need to do?

Best answer:

Answer by drizzit3570
when you turned the water off did you turn off the heater if you didn’t you may have steam built up on top of the heater open the relief valve and see if any comes out.DONT STAND IN FRONT OF IT.if only water comes out close the valve and tighten the cold water pipe.

What do you think? Answer below!

water heater leak

4 Responses to “water heater leaking from top and my electric hot water heater is leaking on the top around the cold water inlet and from the top seam, WHY?”

  • D2:

    when you turned the water off and then back on the weak seal that was there to start with was broken and now you need to reseal it again,the way to do this is to turn the water off at the main unless the shut off is further back and will stop the cold water supply from running while you have it off,then you will need to remove the nipple that is leaking and if it were me i would buy a new one and replace it,the new ones have teflon lining inside the nipple and will last a lot longer,either use teflon tape or pipe dope, which i would recommend,you get a better seal,install the new nipple in the tank and tighten it up and reinstall the supply line ,turn the water back on slowly not to cause any more problems,but before you turn the water back on make sure you remove all the aerators from the faucets,this will prevent them from stopping up with debris from the water lines,so now you have the reason and the fix so go get em

  • peanutbrain:

    The tank has rusted and needs to be replaced.

    Water heaters are lined with glass. But the tank is made in sections that are individually coated. These sections and the threadolets are then welded together hopefully fusing the glass into one perfectly sealed sheet of glass.

    This glass is fragile and can be broken in shipping or installation. This exposes bare steel to the water allowing corrosion.

    Your solution is to replace the leaking heater.

  • Corky R:

    Have to agree with Peanutbtr, unless you can visibly see that the leak is coming from the pipe’s threads where it enters the top fitting in the unit, (something that could be sealed with new dope on a new pipe or teflon thread sealant, whatever), then a new unit is most probably in order. Water heaters can’t get TOO full, they are always full to the brim anyway, and they don’t produce steam when the water supply is shut off. If water would reach steam producing temps inside the tank the relief valve would be opened up spewing water all over the place.

  • Jerry Davis:

    I like the image that you uploaded of your dog