Kosin store outdoor sound systems

Don't believe Toshiba's advertising that their MMS and SMMS units are quiet!.... Toshiba Advertisment:- "As a result of detailed improvements such as the fan drive circuit, fan blade design and construction of the outlet duct our design teams have successfully reduced outdoor unit noise levels. These studies have eliminated the peak noise levels at start up, normally associated with fixed-speed systems, by using soft start controls. An optional night operation/sound deadening control circuit board is available for reducing noise levels overnight by limiting the system's maximum operation. This has resulted in reduced operating noise levels. The exclusive use of inverter-driven compressors also significantly contributes to reducing noise emissions." We have an MMS unit which is very, very noisy. Mostly the noise comes from the Inverter unit! We have suggested that the unit is faulty but Tosbiba advise it is operating within specifications! We have suggested that the unit be changed out for an SMMS unit but Toshiba advise there would be no improvement in the noise levels! This battle with Toshiba has been raging since the day of installation January 2006!