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

https://juliet-wiki.win/index.php/What_is_the_Biggest_Single-Zone_Zone_Air_System_Listed%3F

Thinking about a DIY mini split install? These systems use pre-charged R-454B quick-connect linesets, so you skip the vacuum pump and the need for an EPA Section 608 license. Plug into a regular 115V outlet with 9K and 12K units