If you're planning a DIY multi-zone mini split in 2026, Zone Air and MRCOOL...
https://fast-wiki.win/index.php/Pioneer_vs_Zone_Air_DIY_Install:_Why_Do_Some_Brands_Ship_Empty_Line_Sets%3F
If you're planning a DIY multi-zone mini split in 2026, Zone Air and MRCOOL both offer solid options with thoughtful features