Installing a mini split doesn’t have to be complicated. With pre-charged...

https://fionafreshmaids.com/is-the-150-250-epa-608-certification-needed-for-diy-mini-splits/

Installing a mini split doesn’t have to be complicated. With pre-charged quick-connect linesets up to 16 feet, you can skip the vacuum pump and the need for an EPA Section 608 license