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hot water recirc lines

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Bob Frazier
Bob Frazier Member Posts: 4
in THE MAIN WALL
do you ever need an expansion tank on a hot water recirc line for hot water tanks

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  • Larry Weingarten
    Larry Weingarten Member Posts: 3,994
    You need to think...

    ... about the entire system. If the house/building is on a pressure reducer or backflow preventer or some other one way valve, you need a way to accommodate thermal expansion. The recirc loop itself needs no separate tank.

    Yours, Larry
  • Tim_41
    Tim_41 Member Posts: 153
    installed

    Bob, I installed one on our water heater a month ago. We have a well pump. It works great with no effects on any other part of the system. It does save a ton of water and BTU's from the Vitodens.
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