Alternatives to traditional furnace in rental?

[Katie Sorensen]

Hi all,

I have a small house 1200 sq ft total, so about 600 each main floor and basement. For some reason it's on 2 furnaces and the duct work is separate so can't be combined. I recently replaced the furnace on the main level and now of course, the basement needs replaced too. My question is, is there a wall type unit that can suffice instead? Like something from home depot or other creative solutions that are less than buying a whole new furnace?