Rattling air ducts

I guess like there must be something wrong with our air duct.

When the cooling is on, the lavatory ducttoil rattles.

Anywhere else in the condo the a/c is on as well as silent. I just guess great AC when I sleep, watch TV or make a meal. When I go to the lavatory it sounds like the dryer is on with all the rattling. All I can think is that there must be a loose bolt in that piece of the air duct… Only in the lavatory is the noise as well as it is super loud. It is all you can hear when you shower or brush your teeth. I am hoping the repair for the ducttoil is legitimately small, but I don’t see how. How can our Heating, Ventilation as well as A/C contractor access the lavatory air duct? It sounds like the issue is with the air duct right above the shower. The opening vent to the air duct is quite far away. I guess ducttoil sealing is done with a gun like device. It shots into the air vent air filled with sealant particles. I guess the air can go quite far in the air duct, but that far? Also I don’t think it is a self-explanatory crack or tear along our Heating, Ventilation as well as A/C duct. I think there is a major thing going on like the ducts are not hooked right or linked together respectfully. So I think our Heating, Ventilation as well as A/C professional will need to tear down our wall to access the issue. Then perform the repair as well as then put new wall over top. That is a lot of currency for a rattling sound.

Cooling specialist