Greeting, I'm new to the site and looking for some advice on a decent way to add heat to my home. I currently live in a 3700 sf center hall colonial with two fireplaces. The fireplace downstairs is a masonry fireplace, the one upstairs zero clearance pre-fab. The masonry fireplace is large enough to accomodate just about any insert. My wife and I were looking for a flush wood insert that is going to put out some SERIOUS HEAT. Any suggestions would be greatly appreciated.