I'm a admirer of mini-splits, but when you have 5 small rooms upstairs, and they would like to do split heads or many models, I do not get it. Just get a central system. They make central systems with inverter compressors (to match the eff of minis). Gawler generally https://gawlerhousessold12109.digitollblog.com/35580453/5-essential-elements-for-house-sale-gawler-east