but when you get them working they have many advantages over a window unit! (almost silent,no lite leaks, no smell escape, better humidity control, no window unit hanging out, WAY WAY more efficiant,looks nicer ,easy use of runoff water,designed to work during cold outside temps,etc)...we didnt use any special meters(just the a/c manifold & vac.pump) when vaccumming just ran the vaccumme for 30 min like the instructions say...
I too run a mitsubishi mr. slim...very good unit but I am going to replace it when needed with the new lg unit...my current unit cools 3.4K of lighting but has a difficult time with the summer temps...hard for it to go below 74 degrees in august