Expansion tank on electric water heater?

Discussion in 'Water Heater Forum, Tanks' started by ShockHazard, Mar 2, 2013.

  1. ShockHazard

    ShockHazard New Member

    Joined:
    Nov 1, 2012
    Occupation:
    Independent Contractor
    Location:
    North East Pennsylvania
    Ran into a basic electric water heater system, built in the last decade, with a boiler sized expansion tank on the hot side.

    Any idea why? The only guess I have is the heater being on a timer or such, where it goes from stone cold to hot, but even that seems unneccesary.

    I'd have to guess it was built this way.
     
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