Tackling a 3-zone DIY mini split lets you customize comfort room-by-room...

https://wiki-burner.win/index.php/How_Do_I_Stop_a_Bedroom_Head_from_Short_Cycling%3F

Tackling a 3-zone DIY mini split lets you customize comfort room-by-room without drilling through walls or rebuilding ductwork. These systems often boast heating down to -13°F and SEER2 ratings around 24, so they’re efficient even in bitter cold