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  1. #1
    Join Date
    Sep 2002
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    Energy efficiency of waterheater

    Ruud

    Model: RG50-50CM
    Serial: 0791J97815

    Capacity: 50 US Gallons
    50,000 BTU
    Recovery - 42 (?)

    Installed - 1991


    What's the energy factor of this old gas waterheater? Were waterheaters even rated in the early 90s?

    I'm curious to know if today's natural draft models are significantly more efficient than what I have. I looked at the specs of new models and they're all piss poor - ranging from 0.58 to 0.60.
    I've discovered a natural law - everything gets progressively worse. Things only break down and become depleted. Life isn't worth living and everything is going to hell.

    Death is the messiah. Everything else is irrelevant and arbitrary.

  2. #2
    Join Date
    May 2004
    Location
    south louisiana
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    prolly about a .56 based on the age.

    Whirlpool has a .65 ef gas water heater. Lowes carries it.
    Good water heater.

    Tankless gas units ( I like to put them on exterior wall and not have to buy the venting and cut a hole in the roof) achieve up to .82 energy factor, and it seems like I have seen a couple that were .85

    best of luck.
    The cure of the part should not be attempted without the cure of the whole. ~Plato

  3. #3
    Join Date
    Sep 2006
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    Here is a site with lots of ratings and other good info:

    http://www.gamanet.org/gama/inforeso...ct+Directories

  4. #4
    Join Date
    May 2004
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    south louisiana
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    thanks mchild...I forgot to include the gamma site.
    The cure of the part should not be attempted without the cure of the whole. ~Plato

  5. #5
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    Sep 2002
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    Thanks - I think GAMA only lists current products online.
    I've discovered a natural law - everything gets progressively worse. Things only break down and become depleted. Life isn't worth living and everything is going to hell.

    Death is the messiah. Everything else is irrelevant and arbitrary.

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