I am a fan of mini-splits, but when you have five small rooms upstairs, and they would like to do break up heads or many units, I don't get it. Just obtain a central process. They make central programs with inverter compressors (to match the eff of minis). Disclaimer: https://house-sold-gawler-east66544.bloginder.com/36467370/gawler-house-sale-secrets