Sounds like a whistling. What kind of heating system do u have? If it’s radiators, so hot water running trough the pipes, there’s might be some air in the pipes. If it’s hot air based check for dust or debris in the vents.
08/10/22
Just an ordinary demon don't worry about it
08/10/22
It’s to your left I think, sounds like a fan barring going out
08/10/22
schizophrenia. There is no noice.
08/10/22
It's probably masturbation. I spent weeks tracking down what I would eventually find out was a kid rubbing one out. Do yourself a favor, ignore it now before you know she's sitting on a bedpost with both legs comfortably aimed at the ceiling.
08/10/22
You got ghosts. Do cocaine about it
08/10/22