Q&A Heat loss comparisons

Post in 'Questions and Answers' started by QandA, Jun 19, 2007.

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

    QandA
    Expand Collapse
    New Member
    Staff Member

    Joined:
    Nov 27, 2012
    Messages:
    0
    Likes Received:
    5
    Question:

    I haven't been able to find anything on your web site that gives the results of heat loss comparison tests. What I'm looking for is a comparison of the amount of heat loss vs gain when using:
    1) an open fireplace
    2) a fireplace with an insert that has doors (glass or otherwise)
    3) a fireplace with an insert that's using outside air for combustion

    It seems I've read that the efficiency of the "outside air" system is significant but I can't find anything that states just how much more efficient it is.



    Answer:

    This stuff is discussed in certain articles and Q and A's, but here's a quickie.

    Open fireplace - about 0-15% efficient, sometimes even negative
    Newer Fireplace Insert - EPA approved - 60-75% Efficient
    Outside Air - No increase in efficiency.

    Outside air helps a lot with open fireplaces, since these use a large quantity of air. It may also help a small amount (less than 5%) with stoves, however sometimes the cold air introduction from outside can lower the combustion efficiency.
     

    Helpful Sponsor Ads!





Thread Status:
Not open for further replies.

Share This Page

Entire Site copyright © 1995-2016 - email to webinfo@hearth.com
Hearth.com and HearthNet are property and trademarks of Hearth.com LLC Advertising Information