I recently purchased a home which has a Vermont Casting Resolute in our family room. The room is on a slab (no basement underneath). The room is about 15' x 21'. As it gets colder, it is getting increasingly difficult to maintain a warmer temporature. As far as I can tell from the Vermont Casting web site the stove is rated at 40,000 BTU's which should be enough to heat the room. According to the thermostat on the stove, I can get the tempature as high as 525 degrees. Even still it doesn't seem to through the heat as it should. I've tried everything i should. Flue open, flue closed, front doors opened, front doors closed, rear vent open, rear vent closed, and every combination. Unless you stand a few feet from the stove, you can barely feel the heat. Any help anyone can provide would be GREATLY appreciated. We have a wonderful resource, but apparently don't have enough knowledge to use it or recognise if it is somehow defective.