I'm a supporter of mini-splits, but When you've got 5 very little rooms upstairs, and they want to do break up heads or many units, I do not get it. Just get yourself a central system. They make central units with inverter compressors (to match the eff of minis). https://housesalegawlereast77654.dsiblogger.com/68771286/top-latest-five-sell-house-gawler-urban-news