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    Degree Day comparison info? (5 Posts)

  • MasterPlvmber MasterPlvmber @ 10:16 AM
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    Degree Day comparison info?

    Hello All,
    I'm looking for a reliable resource to compare degree day values from one heating season to another, month-by-month. There is a lot of conflicting information online and I'd like to pick one source.
    Please let me know if you've got something I can access quickly.
    Many thanks in advance,
    John Cataneo
  • SWEI SWEI @ 11:29 AM
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    This should help will let you compare data for pretty much any weather station in the US, including Personal Weather Stations, which can often get you within a mile or less of the subject building.

    If I'm looking at fuel usage, I download several months of daily data into Excel, then separate it out by the bill cycle dates.  A bit of quick division will give you a "BTUs per degree-day per square foot" number that tells you a lot about the health of the entire building system.
    This post was edited by an admin on June 3, 2013 11:32 AM.
  • Gordy Gordy @ 7:44 PM
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    So what's your range of good, bad, and a submarine with screen doors in terms of btus per DD per sf.
    This post was edited by an admin on June 3, 2013 7:45 PM.
  • SWEI SWEI @ 9:04 PM
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    BTUs per degree-day per square foot

    I read somewhere that US homes average about 10 BTUs per square foot per degree-day.  Anything under six looks pretty good in my book.

    IMO this kind of whole-system performance metric should really be used for tax credits and rebate programs.  Prescriptive measures have caused a lot of trouble over the past 35 years.
  • Gordy Gordy @ 5:10 AM
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    Home energy magazine

    Range of Energy Use

    Realtive Frequency
    Under 5.0 BTUs/HDD/Sq.Ft.
    12.2 percent

    Between 5.0 and 10.0 BTUs/HDD/Sq.Ft.
    39.4 percent

    Between 10.0 and 15.0 BTUs/HDD/Sq.Ft.
    23.9 percent

    Between 15.0 and 25.0 BTUs/HDD/Sq.Ft.
    14.7 percent

    Over 25.0 BTUs/HDD/Sq.Ft.
    9.8 percent
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