Thinking about installing a mini split yourself? With pre-charged R-454B...

https://romeo-wiki.win/index.php/Is_a_21,000_BTU_(12K%2B9K)_Dual-Zone_Mini_Split_Enough_for_Two_Rooms%3F

Thinking about installing a mini split yourself? With pre-charged R-454B quick-connect linesets, you can skip the vacuum pump and avoid needing an EPA Section 608 license. Models in 9K and 12K come with convenient 115V plug-in options