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

https://speedy-wiki.win/index.php/How_Much_Is_a_Ceiling_Cassette_Mini_Split_for_a_475_sq_ft_Room%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. Many 9K and 12K units come with easy 115V plug-in options