Installing a DIY mini split system just got easier. Use pre-charged R-454B...

https://andreocln282.lucialpiazzale.com/do-i-need-a-permit-to-install-a-mini-split-myself

Installing a DIY mini split system just got easier. Use pre-charged R-454B quick-connect linesets—no vacuum pump or EPA Section 608 license needed. These units offer simple 115V plug-in options for 9K and 12K models