How to Add Ductless Mini-Split AC to an Older Massachusetts House

https://uniform-wiki.win/index.php/Repair_vs._Replace:_When_to_Stop_Fixing_an_Old_AC

Massachusetts is full of homes built before air conditioning was standard — triple-deckers in Worcester and Lowell, Victorian multifamilies in Cambridge and Somerville, cape-style colonials across the suburbs, and historic capes on the South Shore