Just FYI, there's no reason at all to buy the DIY kits over just a regular mini split. The difference is DIY kits come with the lines pre-vacuumed and with seals on the end of them. So when you finally connect everything, the lines don't need a vacuum drawn on them prior to allowing the refrigerant into them.
A vacuum pump costs about $100. Just get a regular cheap mini split and vacuum the lines yourself, and save $1,000 or more.
A vacuum pump costs about $100. Just get a regular cheap mini split and vacuum the lines yourself, and save $1,000 or more.