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

https://blogfreely.net/rothesqlmw/what-size-mini-split-for-a-900-sq-ft-basement-or-great-room

Thinking about a DIY mini split? These systems come with pre-charged R-454B quick-connect linesets, meaning no vacuum pump or EPA Section 608 license is needed. The 9K and 12K models even offer easy 115V plug-in options