My husband loves the large two-sided "see through" fireplace in the diningroom and livingroom of our open plan house, but the energy auditor said not to burn it when the weather was cold! I've been searching for a way to make it more efficient without destroying it's aesthetic appeal to both rooms. I've found only a few two-sided inserts--ones by Acucraft (expensive), Fuego Flame, and Don-bar. Does anyone have any experience with any of these? Are they significantly better than just installing ceramic glass doors on both sides? Are there any other choices? Thanks for any help!