we just had minisplits installed on the 1st floor and in basement. on the second floor we have a conventional heat pump system with no visible duct work because it is all in the ceiling/attic. I thought I would be bothered by the appearance of the wall mounted units, but honestly i don’t even see them anymore. And the rooms still feel big because there is no duct work. the outdoor condensers are so small and quiet – one is under the front porch and one under the back deck. we haven’t used them as AC yet obviously, but they heat really well. I am very very happy that I don’t have duct work, and that i can heat/cool each floor separately. When you are planning the location of the wall units, keep in mind the minimum distance from the ceiling – i didn’t know this, and it screwed up the placement of one of the units.