Nope, my house is not at Bendemeer. Went to Natural Cool today to check on the airconditioners. Found out that Panasonic does not have system 4. Was told by the sales staff that Mitsubishi system 4 inverter aircon system MXY-4A28VA has a suitable sized compressor which can pass through the small sized aircon ledge window. There is one model with 18,000BTU and another 20,000BTU with less than $100 difference in price. Seems like Mitsubishi system 4 is used by many apartments at Pinnacle. Might want to to get this inverter aircon but would like to get feedback first from owners who are using this model and brand. Is it cool, quiet and energy-saving? Daikin also has a system 4 inverter aircon but the compressor is slightly bigger. It is also much more expensive.