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  1. #1
    Join Date
    Aug 2016
    Location
    Tennessee
    Posts
    5

    Default Dual water heaters

    Dsc_0070.jpg
    I found this water heater arrangement on a recent inspection. The output on the electric heater (on the left) feeds into the gas heater (on the right).
    I've not seen this arrangement before and can not figure out why this would have been done. Both units are active and producing hot water.
    Has anyone seen this before? and if so, why was this done? (the water softener in the foreground is not connected.)

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    Inspection Referral SOC

  2. #2
    Join Date
    Aug 2008
    Location
    Maryland
    Posts
    1,898

    Default Re: Dual water heaters

    It may have been done strictly for storage capacity and to be able to fill large soaking tubs. Depending on operating cost of electric vs gas it may make sense. The gas might afford quicker recovery.

    All answers based on unamended National Electrical codes.

  3. #3
    Join Date
    Mar 2007
    Location
    Orlando, FL
    Posts
    1,340

    Default Re: Dual water heaters

    There is a recirculating pump in the photo, perhaps they needed extra hot water for remote devices or fixtures.

    Dom.


  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,248

    Default Re: Dual water heaters

    I also provides hot water when the power goes out (because of the gas water heater).

    There are some questionable items shown too.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  5. #5

    Default Re: Dual water heaters

    It is possible the home is served by an "Off-Peak" service and that might make the electric water heater the less expensive to operate under typical conditions but allow continued service when the power is off.


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