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

https://tessatopmaid.com/how-do-i-pick-between-wall-mount-cassette-and-concealed-duct-mini-splits/

Thinking about installing a mini split yourself? With pre-charged R-454B quick-connect linesets, you skip the vacuum pump and EPA license hassle. Plug in the 9K or 12K units using standard 115V outlets