The outside pipe is the vent for one of two pellet stoves in this old cold ass house, along with three propane stoves, two with blowers and one wall mounted in the bath room, and five electric heaters. I am not able to cut enough fire wood to keep four or five wood burners going any more. I can remember back in the early sixty's when there were six fires going at one time here. (I have cut my share of fire wood)
Ten heaters in total and still cold!!
And four air conditioners in the summer, and still hot!!
all them heaters, u just need to do like the Indians did... circle the wagon train... then sleep in the middle!
cold? maybe u got your windows too far open on a cool night... lol . u got tall ceilings in that house? is it the original home-place? from 1880's... when built?....