I've personally used best tech 2 times' one for my mum's place and second on my own house. 2 sets inverter air-con for 2 seperated units. Previously we hired another air-con company located in the west, they came see the place and says that the piping was too long and they left the place, we were left unfolded until a friend of mine recommended me them which was located at IMM,the salesman was very experience and the salesperson offered me an insulation from italy name K flex, this insulation actually help to stop our long years with problem of insulation.
My second set of air-con was just installed 1 week ago, very satisfied with their workmanship and most important pricing. I would rate them 4.5/5.
