I had bad experience with cold engine workmanship. this is 3rd time water dripping after installation on few months ago in year 2016. Please survey properly before engage. the piping box has to crack open again and again, its became not nice. the house was new renovated. not only that, got to take leave several time just for this ! they say "i know you are very unhappy but this is very normal that would happen, if you can find any contractor that 100% wont happened pls let him call me". Would you happy if you were me, would you happy looking at the box's paint goes off after nicely paint, would you happy to take leave to look at the repairing aircon?
I have have my previous house installed too, not such issue happened.