If you're planning a DIY multi-zone mini split in 2026, Zone Air and MRCOOL...
https://codysnewinsight.swiftnestly.com/posts/zone-air-build-your-own-tool-how-does-configuring-a-mini-split-kit-work
If you're planning a DIY multi-zone mini split in 2026, Zone Air and MRCOOL both offer solid options with thoughtful features