Installing a DIY mini split system just got easier. Use pre-charged R-454B...

https://www.alphabookmarks.win/thinking-about-installing-a-mini-split-yourself-diy-systems-with-pre-charged-2

Installing a DIY mini split system just got easier. Use pre-charged R-454B quick-connect linesets—no vacuum pump or EPA Section 608 license needed. These units offer simple 115V plug-in options for 9K and 12K models