Thinking about a DIY mini split? These systems come with pre-charged R-454B...

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

Thinking about a DIY mini split? These systems come with pre-charged R-454B quick-connect linesets, so you can skip the vacuum pump and avoid needing an EPA Section 608 license. Choose 115V plug-in models for 9K or 12K units