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    rocketsled's Avatar
    rocketsled Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 27, 2014, 08:14 AM
    Do you need a expansion tank on a tankless water heater?
    Do you need a expansion tank on a tankless water heater?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jan 27, 2014, 09:03 AM
    No! Regards Tom
    Milo Dolezal's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #3

    Jan 27, 2014, 08:23 PM
    In my area of operation, Inspectors now require Thermal Expansion Tanks to be installed in new construction.

    However, if in doubt, install one. The Expansion Tank itself is not expensive and installation takes under a half an hour.

    Milo
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