I own a three story multi-unit house. The first floor is one unit and the second/third floor is another unit.
I currently have the electricty split but not the heat. The first floor unit is roughly 700 square feet while the upstairs unit is around 1200.
I was wondering what options I had for splitting the heat. Preferably the least expesive option Also if there is an option that I could possible perform myself to save some costs that would be great. I would consider myself somewhat of a handy man.