On Jun 1, 2:09*pm, Jonathan Grobe wrote:
I have a traditional brick chimney which I no longer
use as I have switched to a high efficiency propane
furnace (so the smoke goes out through a small pipe).

Any estimates of how much heat loss I am having
(brick having a low R-value) and what I should about
it? (I don't think I have the energy to remove it).
s
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Jonathan Grobe Books *
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The major heat loss, even with damper closed, is air rising up the
stack.
T