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

https://zone-air.com/solutions/diy-mini-splits/

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 avoid needing an EPA Section 608 license. Choose 115V plug-in models for 9K or 12K units