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

https://wiki-net.win/index.php/How_Quiet_Is_a_Mini_Split_Indoors%3F_Is_26_dB_Realistic%3F

Thinking about a DIY mini split install? These systems use pre-charged R-454B quick-connect linesets, so there’s no need for a vacuum pump or EPA Section 608 license. Models in 9K and 12K come with easy 115V plug-in options