I'm not sure where to post this Q. I'm staying on the first floor in a condo. Is it normal to hear "krack krack" sound coming from the ceiling. I only hear it in the bedroom. Even at this hour, 1something. Previously I have never noticed this noise before. It doesn't sound like from upstairs. It sounds more like rodents. But how could this be happening? Any idea what could this noise be? It is so annoying that I cant sleep. I have stayed in condos before, many many, but I have never encountered this noise before. HELP ME!

Hello Jo_da48, it is not the toilet above, because the noise was scattered all over the ceiling the bedroom, and i only managed to sleep at 5am when i switched off the air con, and the noise stopped immediately! hmmm previously i didn't hear this noise when i on the air con. i am still puzzled and it was my first night sleeping there.