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

https://wiki-fusion.win/index.php/What_is_a_Concealed_Duct_Mini_Split_and_When_Does_It_Make_Sense%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