spent many many nightss in a 14x20 with that same stove, usually someone gets up once to stoke it, someone always gets up to peeeeeeee anyway, i made bunkbeds 2high, 4 people sleep in a 12x14, with stove and table, still room for gear,,,,when its 20 degrees or above if the stove dies down no big deal, when its 0 degrees and worse different story,,, the water heater always boils out in the night making more noise that a bear chasing the mules,,,,,, i dont use it anymore,,,,