If you’re tackling a DIY multi-zone mini split this year, Zone Air and MRCOOL...

https://wiki-cafe.win/index.php/Zone_Air_Build_Your_Own_Tool:_How_Does_Configuring_a_Kit_Work%3F

If you’re tackling a DIY multi-zone mini split this year, Zone Air and MRCOOL offer solid options that balance efficiency and ease of install