A Homeowner's Guide to Ductless Mini-Split Installation

https://wiki-club.win/index.php/How_to_Know_If_You_Need_New_Ductwork_Before_Installing_AC

If you've ever tried to cool a room that doesn't connect to your home's duct system — a finished basement, a converted attic, an addition built after the original HVAC was installed — you already know the problem