This is an interesting thread, and I'm intrigued and have questions. I realize that these long burn times are a result of both the stove and the bricks. I'm wondering if I'd get longer burn times with my non-cat insert if I'd use some of these bricks. I'm thinking specifically for overnight burns on the coldest nights. Usually when I go to bed at 11, and wake up at 7, there aren't many coals left. That hasn't been a problem yet this year as the weather has been pretty mild, but when the really cold temps and wind come, the house can get pretty chilly in the morning. I'm wondering if these bricks will help me bridge that gap from bedtime to morning. I know there's only 1 way to truly find out, but I thought I'd ask here first. Thanks.