I am a fan of mini-splits, but when you have 5 little rooms upstairs, and they would like to do split heads or various units, I do not get it. Just have a central program. They make central programs with inverter compressors (to match the eff of minis). Gawler https://housessoldgawlersouth23344.blogstival.com/57509107/the-best-side-of-house-sale-gawler-south