We have a Lopi insert, had it about 35 years and it will keep the whole house warm if we run the ceiling fans to distribute the heat. It burns pretty clean, not much smoke once it gets going. Cloase the damper down pretty low and it will burn all night and still have coals the next morning to start the next load. A bonus is that you can cook on it if needed. Getting to stove up (pun intended) to cut and split wood nowdays, we relegate it to backup duty now. Nothing beats the radiant heat from a good wood stove.