A few years ago, we were in Wales and we toured some of those big old country estates. The [very large] homes would have as many as two dozen chimneys, and each chimney, as it ran up thru the floors, could have several fireplaces associated. The lower rooms, the common areas such as dining rooms, etc, were enormous and had fireplaces large enough to stand up in. As the floors went up, the rooms [bedrooms and etc.] grew smaller with increasingly smaller fireplaces, depending on the size of the room. At the very upper floor, right under the roof, were the tiny rooms for the nannies and the like, and the fireplaces there were so small it was almost comical, foot or so wide. I mean, tiny. I can't imagine they did much. Imagine having to supply all the wood for dozens of fireplaces plus the cooking stoves and fireplaces. With axes, probably had several guys who did it all the time, cutting trees, I mean.
On the other hand, I became more interested in the way the poorer folk lived and came across some books on that subject. The country folk would typically have a lower floor, the ground floor, an open area in which the livestock was put at night. This kept the animals protected from the wind and the worst of the cold, plus their body heat would help warm the upper floor, where the humans stayed. Or at least that was the theory. I suppose it would have helped at least keep everyone alive, animal and human, though I can't see it being toasty. The ammonia smell [and others] would probably have been better than being colder upstairs. One can figure the smells from the ground floor were pretty bad upstairs.
On the other hand, I became more interested in the way the poorer folk lived and came across some books on that subject. The country folk would typically have a lower floor, the ground floor, an open area in which the livestock was put at night. This kept the animals protected from the wind and the worst of the cold, plus their body heat would help warm the upper floor, where the humans stayed. Or at least that was the theory. I suppose it would have helped at least keep everyone alive, animal and human, though I can't see it being toasty. The ammonia smell [and others] would probably have been better than being colder upstairs. One can figure the smells from the ground floor were pretty bad upstairs.