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

https://www.bravobookmarks.win/thinking-about-installing-a-mini-split-yourself-our-diy-systems-use

Thinking about a DIY mini split? These systems come with pre-charged R-454B quick-connect linesets, so there’s no need for a vacuum pump or an EPA Section 608 license