Yesterday we saw that the expansion tank on our < 8yr old water heater looked like this: enter image description here Hot water is no longer available. If it's possible for the tank spill to cause the heater to stop heating then I'll try to replace the tank. Otherwise, it's wait a week for a plumber to take a look. It's a very busy time for that profession.

  • 1
    Gas or electric heater? Is the heater not heating the water or no water coming out?
    – crip659
    Commented Nov 19, 2021 at 16:36
  • It's a gas heater. Heater not heating; water flows.
    – geoB
    Commented Nov 19, 2021 at 17:08
  • Did the leak from the tank go over/onto the heater or just on the floor? If onto the heater it might have damaged some electrical/control circuit.
    – crip659
    Commented Nov 19, 2021 at 17:20
  • 2
    Is the pilot light still lit? You may have to relight it. Have you checked to see if the burner ignites? Review the basics first.
    – HoneyDo
    Commented Nov 19, 2021 at 17:51
  • I would drain the expansion tank first and inspect the pilot fire.
    – r13
    Commented Nov 19, 2021 at 20:43

1 Answer 1


After replacing the tank (easy job after watching a video) I was able to reignite the pilot and the heater is now doing it thermo-increasing job.

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