Switching to a 3-zone DIY mini split lets you control heating and cooling in...
https://mariossuperbchat.wordcanopy.com/posts/can-i-install-a-3-zone-mini-split-without-a-vacuum-pump
Switching to a 3-zone DIY mini split lets you control heating and cooling in three rooms without rewiring your whole house. With models boasting a -13°F heating rating, you’re covered in cold snaps, and SEER2 24 efficiency helps cut energy bills