Aircon places I have being to:
IMM: All Best, Best Tech and Gain City
Toa Payoh: Courts and Best Tech
Mitsubitshi Heavy Industries (MHI) System 3.
SCM60ZG-S / 3 x SKM28ZG-S
Best Tech IMM/TOA PAYOH => $2600
Gain City => $2700
All Best => $2680
Courts => Do Not offer MHI
Experience with Best Tech Toa Payoh
Salesman: Anson
Honest with his recommendation. Of course he promote MHI. He look out for your budget, recommend what system to use and what is Invertor and Non-Inverter purpose. R410 or R22 Refrigerant. Look at your floorplan to see if your selected system is feasible, but his knowlegde on this not very power, ask us to do it inside the L-Box, his technician can and say... cannot... must do it on the ground. Took Mitsubitshi Heavy Industries for it's overall features, functionalities and price. Good after sales service, he help to push the installation date for me 1 week ahead of schedule. Give me the right contacts to settle some piping comestic issues. So I really have a pleasant working time with him. If you on budget, he recommends Sanyo Invertor for $2200 I think, but he did mention the model was a little old.
All Best: They are busy a lot of client when I visit, just a few stuff brochure to me, advise on a few brands.
Gain City: Their salesman quite interesting... push Mitsubitshi Electric StarMex. Best in Singapore, very easy to clean. Dun buy MHI, it's a waste of money. Comment on Best Tech services... but frankly, when I shop, I need product information more than your gossiping of your competitors. Anyway, its does turns me off a little.
Courts: Their salesman are pretty clueless on alot of things. I ask them about invertor and non-invertor... straight away he said.. dun waste time, get invertor... save electricity. But the main purpose for Invertor is to regulate the power when you turn on all the 3 rooms at the same time and for a pro-long period as it have seperate engine. In layman terms for Invertor, If Room A is not cool, the the engine A will spin more, but non-invertor runs on single engine, thus it will just spins when 1 room is not cool. If you only turns on a room at any one time or you just use for a few hours before sleep, then your invertor is pretty much useless, like for small family. The energy savings is based on the same specs and turn on at the same time.
Of course sometimes it down to luck for which system you get and the installation. A lot of negative feedback was on Best Tech in the renotalk and other SG forum in 2007/08 and early 09. Piping sweating and poor workmanship. I do find mine pretty OK after testing, no sweating found but not sure for future, I guess they might have improved on their service, even their technician is pretty friendly as well, he noticed my wife is pregnant then and tell her. Dun come in, I promise I will do it perfectly for you, well.. it's not perfect but it's pretty good.