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

https://wiki-book.win/index.php/How_Do_I_Size_a_Mini_Split_with_Vaulted_Ceilings_Over_8_Ft%3F

Thinking about a DIY mini split install? These systems use pre-charged R-454B quick-connect linesets, so there’s no vacuum pump or EPA Section 608 license needed. Plus, the 9K and 12K units come with easy 115V plug-in options