Thinking about a DIY mini split? These systems come with pre-charged R-454B...

https://remote-wiki.win/index.php/How_Do_Zones_Work_on_a_Mini_Split_System%3F

Thinking about a DIY mini split? These systems come with pre-charged R-454B quick-connect linesets, so you can skip the vacuum pump and don’t need an EPA Section 608 license. The 9K and 12K models plug into a standard 115V outlet