"I have the same question as well.
I was looking at displacing my oil heat with a mini-split/ductless heat pump. The payback seamed good until I calculated in my cycling losses or idle loss and domestic hot water generation. My 53 year old boiler…"
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A presentation by Greg Labbé in April 2014 on retrofitting vintage home for energy efficiency. He talked about basic building science, brick houses, movement of heat energy and moisture in and out of the house, air barrier and water barrier, house…