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

https://www.click-bookmark.win/thinking-about-installing-a-mini-split-yourself-with-pre-charged-r-454b

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. Plug-in options for 9K and 12K units run on 115V power