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

https://fionafreshmaids.com/what-dual-zone-mini-split-covers-about-1200-sq-ft/

Thinking about a DIY mini split? These systems come with pre-charged R-454B quick-connect linesets, so you can skip the vacuum pump and don’t need an EPA Section 608 license. The 9K and 12K models plug into a standard 115V outlet