I'm upset. A company, supposed to be one of the best, is installing a mini-split system in my house. See picture. I can't believe this method of connecting two diameters is considered approved or a best practice. It looks like he pinched the larger line so that a braze joint could be attempted. I think a quality flare joint is preferred at this connection point. If someone says it is done all the time, that is really not a good answer.
AC technicians please comment.
Thanks.
