I brought a new Rasonic air conditioner XC710J last 20th month. It was an 7500BTU model with remote control. But the model was not a recent new model. It was a 2010 model and same as Panasonic. But it cost me $3020 including installation fee with new aluminium frame. Because as far as I know. This model is much quiet than its later model 711 and 712. At least I couldn't find any negative news from the net.
The first day after installation, I was very satisfied to it. But 2 days after, there was some sounds from the front grille. Therefore I informed ShunHing soasto solve it. The technician added some lubricant oil to the vane. The problem was solved.
But some days after, I discovered some noise was inside the air-conditioner when the condenser was started making cold air. Therefore I requested ShunHing again, another technician was come and made some adjustment in order to make it quiet when working. The problem seemed to be solved but I still found little noise.
Mightbe my expectation to the air conditioner was very high because I needed having a good quality sleep everynight. Also were I brought a brand new model made by China brand names, it only cost me $1700 to $2400 such as $1700 for Media 07CM3N1, $2400 for Media 07HR3N1 and $2000 for Gree G1307SR with remote control including installation fee.
But then I discovered when I turned the temperature setting to the lowest degree with low wind, it seemed to be most silently.
I found Panasonic 9000 BTU model without remote control only cost $2000 with installation fee recently. it was a big joke.