Thinking about a 3-zone DIY mini split? These systems often handle heating down...
https://future-wiki.win/index.php/Do_Multi-Zone_Mini_Splits_Need_One_Outdoor_Unit_Sized_for_Total_BTU%3F
Thinking about a 3-zone DIY mini split? These systems often handle heating down to -13°F and offer impressive efficiency with SEER2 ratings around 24