Thermal expansion tank placement

tonyjk · Aug 26, 2005

I was told by my son in law that the thermal expansion tank can be on the cold or hot side of a water heater. However I have not been able to verify this. Can the thermal expansion tank be located on the hot water side?

P0ZBURN · Aug 26, 2005

The one I put in my house, the instructions said to put it on the cold side.
Why?

I dunno, maybe the rubber inside would get too soft in hot water?

Sponsor · 2022-01-29T12:20:58-0800

hj · Aug 26, 2005

tank

If it were not for the possibility that valves might be closed the expansion tank could be installed anywhere in the system. Hot water is a bit more agressive so it should be on the cold side.

Thermal expansion tank placement

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