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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


  • SWEISWEI Member Posts: 7,356
    edited June 2013
    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.
  • GordyGordy Member Posts: 7,122
    edited June 2013

    So what's your range of good, bad, and a submarine with screen doors in terms of btus per DD per sf.
  • SWEISWEI Member Posts: 7,356
    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.
  • GordyGordy Member Posts: 7,122
    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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