I have had my stove going for a few weeks, but today I got to work and it was 62 inside; 32 outside. I have been able to burn all day with only a short time with the window open. Took about 4 hours to warm the space, but I loved every minute of it. I like it being a little brisk while the stove warms up. Occasionally, I warm my backside by the stove while waiting for the room to warm. With my stove, you have a long wait until the stove is kicking alot of heat, but once she's going, she holds the heat well until the fire goes completely out and the stove cools for several hours. I imagine a barrel stove would be perfect for instant heat, but I have no real desire for anything like that...especially when aesthetics are considered.