Hi, I recently received a complaint letter from hdb lodged by my neighbour sharing the same bedroom wall as me. They claim that their bedroom wall is dripping wet due to condensation caused by the wall being too cold and it is caused by my aircon being too cold. Hdb is requiring me to lower the strength of my aircon and point it away from that wall. The letter also state that they have surveyed and determined that this is the cause of the issue and remind me that hdb laws states that owners are allowed to install aircon on the basis that they are in proper working condition.
My question is firstly, what kind of survey did they do to determine the cause without coming into my flat to check at all? Secondly, why would my aircon affect their wall if hdb have built our flats well enough to isolate each unit to their own to uphold the quality of the build promised by the government and to protect our privacies as owners? Thirdly, in such a case, who is judging and appointing that the fault and solution lies with me solely and not shared and/or if the hdb is also partially/fully liable? Lastly, are there actually laws that govern such neighbourly disputes and are they actually applicable to this issue? (The letter says I can use my aircon as long as I maintain it in proper working condition and it seems like the complaint is that my aircon is working too well...)
Last year around the same period (May-June) I did receive such a complaint before and from July onwards there seems to be no such complaints anymore until now. I believe that the issue has to do with weather changes and rise of humidity, and will be solved after the wet season passes. But as a courtesy, I'm currently planning to insulate my side of the wall to prevent thermal transfer, hoping that it will help the situation. I'm not well verse in such matters so I'm not sure if the insulation should be done on my end or my neighbour's end, but I'm willing to do it anyways. I have my reasons to maintain a cool temperature in my bedroom and it will be rather disruptive to my family if I were to lower the aircon.
I'm asking for advise and help from you guys to determine if my actions are correct or am I actually not liable. And is there help that I can seek from my standpoint to resolve this issue as apparently the hdb thinks that the issue is my fault (and I guess global warming is real and it's also my fault...) Please help, thanks!!!