If you’re looking to tackle a DIY multi-zone mini split project in 2026, Zone...
https://tiny-wiki.win/index.php/Zone_Air_Multi_Zone_DIY_Systems:_Are_They_Tested_for_Leaks_Before_Shipping%3F
If you’re looking to tackle a DIY multi-zone mini split project in 2026, Zone Air and MRCOOL both offer solid options