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

https://source-wiki.win/index.php/How_Long_Does_a_Concealed_Duct_Mini_Split_Install_Take%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