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

https://zoom-wiki.win/index.php/Do_I_Need_a_Vacuum_Pump_for_a_Pre-Charged_Mini_Split%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