I am thinking of getting Mitsubishi Starmex (System 3) for my new 4-room hdb. Is it the norm to get an inverter? We seldom use aircon, maybe 1-2 times a month.
i think overlaying is better coz if the waterproofing is not done well, esp for OLD flats. You will kenna the neighbours downstairs complaining of leaking ceiling. then jialat.. u will have lots of problems dealing with it.