Fireplace insert or glass doors + outside air intake?
I have a rather large fireplace that can clear the house of all heat, so I am never really using it. Would be nice to make it functional source of heat and have it as a backup for those times in winter we lose power or when minisplits can’t cover entire heating load.
Question: do I have to go the expensive fireplace insert + outside air supply route, or going with the proper glass doors + outside air supply would give me good return on investment?
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