This AC use in our our office.my brother told me AC as you know it is 5 Star and helped reduce my electricity consumption by a lot. The AC makes a bit of noise when the fan is at top speed but pretty much manageable at the lowest setting.
Howeoone issue remains with all Hitachi ACs, their remote sucks or their sensor sucks. It won’t register the button press. This happened not just to me but my friend who bought Hitachi AC from a different vendor faced the same issue.and water are likage.