Single-Zone vs. Multi-Zone Mini-Split Systems Compared
https://wiki-byte.win/index.php/How_to_Maximize_Energy_Efficiency_After_a_New_AC_Install_83322
Ductless mini-split systems have become one of the most common HVAC choices in Massachusetts — particularly in older homes where installing ductwork is expensive, disruptive, or structurally impractical. But the category is not monolithic