Expansion tank leak

[girlcat36]

why oh why is my 3 month old expansion tank leaking at the seam around the middle? ( And there is also a pinhole leak spraying out) Do these tanks often fail? Or is there some problem in the water heater? Aaargh!
Thanks, Teresa

 

[Dunbar Plumbing]

Defective. Whoever installed it should come back and replace it @ no charge to you.

If you bought the house recently then contact the previous owners/builder and have them address the problem.

 

[Sponsor]

 

[girlcat36]

My fiancee installed it. I have lived in the house for ten years. The tank itself is leaking not at the connection.

 

[Bob NH]

Potable Water or Hydronic System Tank?

One problem with expansion tanks is that sometimes people put a tank intended for a furnace at 30 psi on a potable hot water heater that can get to 100 psi in some homes.

There was a post on this forum a few months ago that was just that problem.

Check the model number and verify that it is a tank for potable water, and find the pressure rating.

 

[Cass]

Bring it back to where ever it was purchased and get another.