Yeah, once the temperature reaches the desired level (e.g., 23 in the "main zone) and the blowing of the hot air essentially stops, the noise goes away, but then if…

Unfortunately, due to wife working from home I can't put it on cold till Monday. I'll report back after I'm able to do the cold…

Thanks for the info all. What I meant by the disk portion of the diffuser is the part that you can easily remove by rotating it (because it is screwed…

I have tried adjusting the level of air by turning the circular disk down (to allow more airflow). That didn't help. The only thing that seems to stop the noise…

Hi all,
We recently installed ducted aircon in our house. Ever since the installation, we noticed all plastic diffusers in different zones make a relatively loud popping/clicking noise when the unit…