Thinking about installing a mini split yourself? With pre-charged R-454B...
https://wiki-byte.win/index.php/How_Do_I_Pick_Between_Wall_Mount,_Cassette,_and_Concealed_Duct_Mini_Splits%3F
Thinking about installing a mini split yourself? With pre-charged R-454B quick-connect linesets, you can skip the vacuum pump and don’t need an EPA Section 608 license. Plus, 9K and 12K units offer easy 115V plug-in options