Hope someone can help me solve a frustrating problem that is causing me to lose sleep. We have lived in our rented accommodation now for 8 weeks. For the past 6 weeks we have been hearing a resonating/humming noise that only lasts for between 10-30 seconds but is loud enough and annoying enough to wake us up. When we hear the noise we can hear it loudest upstairs - sounds as if its in between the walls. At first we thought it might be the cowl on the chimney but this has been replaced and we are still hearing the noise. The boiler is in the garage directly below our bedroom and as it almost sounds like some sort of pump trying to start up but not being successful we thought this might be the source but as we also hear the noise when the boiler is off this rules this one out. Does anyone know if there is anything associated with a heating system that could be making this sound even when the boiler is off? Its so frustrating hearing the noise but not being able to locate it and then solve it. Any thoughts really appreciated
Thanks
Thanks