I have an old Martin Wood Burning fireplace box and looking to replace with a high efficiency fireplace to supplement the heat on my first floor and be able keep the doors closed at all times and uses less firewood. I was considering getting the Monessen Monarch BFC which has all the features that I'm looking for and I believe that I can just take my old fireplace box out and replace it with this one because it has the same specs, plus I like the price of it which is around $3k. Some of the other ones I was looking at Like the Fireplace Xtrordinair were about $4k-$5K. I'm looking for some advice. I can't find any reviews on this fireplace and before I buy it I want to make sure its not a piece of junk. Any info would be great. Thanks.