I have a situation where it might make sense to install an insert for backup heat. My house has a large see through fireplace on the main floor. Of course using this thing is usually a heat loss, and we only have a fire in it when we'd like to watch the flames....usually not on really cold days. However, there's also a fireplace in the basement. The house was built in the 50's, and I assume the idea was to eventually finish the basement space, but the original owners never got around to it. We might eventually do something down there, but we have plenty of living space on the main floor, so it's not a priority. However, after reading this thread, it seems to me that putting in a good insert in the basement fireplace might be a reasonable way to provide some backup heating for the house. The fireplace downstairs is all brick, and the basement is concrete. It's a walkout basement, so getting to the wood supply would be easy enough. However, the fireplace is right in the middle of the basement and it would be difficult to supply outside air to it. Would this still be a reasonable way to get some heat? Looks like the least expensive inserts are in the $1500 range, without chimney or installation.
Chuck