Quote:
Originally Posted by Michigan Farmer
Good Morning. Just want everyone to know that the expansion tanks on top of your water heater seem to be a ticking time bomb. There have been two that have failed on my block in the past six months, about six years old. If the relief valve on the top of your water heater is not plumbed directly outside, not just into the drip pan, when this tank fails the relief valve opens and will flood not just your garage but if not caught fast will flood into you house. I just changed mine and found it full of water and it would have failed soon. Bought my replacement tank at Lowes on line for under $30 and it's very easy to change out.
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I never had expansion tanks on water heaters up north so I don't know much about them. I take it there is not suppose to be any water in that tank. So if water goes into this expansion tank the water heater will release all forty gallons? How do I check this out to make sure mine is okay. By just looking, it appears to me the expansion tank is just screwed on. What is evolved in replacing it?