When I purchased my Minneapolis, MN household it was apparent the previous owner added a lot onto the space, however i can tell what the original household is & what was added later, there are so many extra rooms & odd spaces in my household now.
The gas fireplace I felt was the original boiler in the Minneapolis, MN home! For a small MN home, that heater would have been perfect, and when you add an office, two bedrooms & another bathroom, well that fireplace is no longer fantastic enough.
I started looking at potentially making two furnaces in my house. I had a Heating, Ventilation, & A/C supplier come into my household to take a peek around. The guy actually informed me that the previous owner did his due diligence. The addition did have air duct that linked to the old house. That meant I could simply buy a central Heating, Ventilation, & A/C component & have whole household temperature control. I could have both heating & cooling for every room. I ripped out that fireplace to get more square footage. I then had just one central heater & air conditioning installed in the home. The outdoor component is tucked on the side of my household & out of the way. I cherish having all the rooms evenly heated & cooled… My part doesn’t get that hot, however having the occasion of A/C is really a nice thing, then every now & then it gets quite sticky & muggy at night, then so while I might not like the modern additions, I do like that they came with air duct.