kwh compared to therms? (gas or electric hot water)

mikeyny Posted By mikeyny, Nov 6, 2010 at 11:45 AM

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  1. mikeyny

    mikeyny
    Feeling the Heat 2.
    NULL
    

    Nov 16, 2007
    294
    0
    Loc:
    upstate ny
    Since I preheat my domestic hw with a home brew heat exchanger I wonder if I would be better off using an electric water heater. Presently I have a separate 50 gal tank that the cold water enters, when the wood boiler is running it makes hot water thru my heat exchanger. (5 ft of 2inch black iron pipe with 1/2 inch finned copper running thru it) and that feeds into my gas water heater. My nat gas bill varies from 5 to 17 therms per month. 17 therms is about 38 bucks. I was wondering if it would be better (cheaper) to use an electric water heater, since there would be no standby looses. When I googled a therms to kwh calculator it says 17 therms equals 498 kwh. Is that correct? IF it is gas is much cheaper in my area. Any thoughts.
    Mike
     
  2. ewdudley

    ewdudley
    Minister of Fire 2.
    NULL
    

    Nov 17, 2009
    1,987
    308
    Loc:
    Cayuga County NY
  3. woodsmaster

    woodsmaster
    Minister of Fire 2.
    NULL
    

    Jan 25, 2010
    2,827
    145
    Loc:
    N.W. Ohio
    I believe in most places gas is currently cheaper than elec. Not so a few years ago and who Knows what the future holds.
     
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