1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)

Q&A Calculating BTU requirements?

Post in 'Questions and Answers' started by QandA, Oct 5, 2001.

Thread Status:
Not open for further replies.
  1. QandA

    QandA New Member Staff Member

    Nov 27, 2012

    I came across a formula while looking at old message here. Just wondering if anyone has used this way of calculating wood stove needs, or if they have an alternate way of figuring their stove requirements.

    BTU Needs = 4.5 x cubic feet in house

    cubic feet = each room's length x width x height

    Any adjustment factors for old or new houses?


    It's a good rule of thumb for most construction in temperate climates. However, much more must be considered in order to properly calculate...such as window area, exterior walls, how open to other rooms, etc.

    Heat loss can vary a lot, as can climate. Some rooms could need double this figure, while others could need LESS than half.

    Keep in mind that, despite ratings, most wood stoves put out 15-30K BTU on a average basis AND they are not always able to heat the entire house, but can provide 50-80% of the heat load in many cases.

    Helpful Sponsor Ads!

Thread Status:
Not open for further replies.

Share This Page