Maybe a bit late, but agree with LeginSenoj, I used the guys from Camposol years ago, good units but they put them in the wrong place, I was not there when they were installed and my wife organised the installation, to me they took the easiest form of installation they could, so quick installation money in the bank thank you!!
The last one I had installed (different house) was by Raja, excellent did exactly as requested, good job and good price
Would advise if you have not had any installed as yet, look at inverter units, these will give you heating also, a little more cost than cooling only but well worth it, and it is a lower cost of heating.