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

https://mega-wiki.win/index.php/Do_I_Need_a_Permit_to_Install_a_Mini_Split_Myself%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 EPA Section 608 license hassle. You can run 9K and 12K units on simple 115V plug-in options