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

https://www.oscarbookmarks.win/thinking-about-a-diy-mini-split-these-systems-come-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. Models in 9K and 12K come with convenient 115V plug-in options