re: Mini Split Ductless AC...Anyone have any experience with these systems?

I just installed one in my bedroom. I drilled a 3" hole in the wall for the copper lines, drain tube, and wiring, then I mounted the bracket and hung the blower. I ran a dedicated 20amp 110vac circuit to the compressor unit that sits outside. I had a local HVAC company come out and connect the tubing (I didn't want to be responsible for putting a kink in the tubing). They pressure tested, vacuumed the line set, and released the precharged refrigerant. Works great, it gets cold in the bedroom now. It's also way quieter than a window unit. BTW, it's a 9000 btu unit with a heat pump. Hope this helps.