I’ve read previous posts, regarding noise in water lines but my situation confuses me. The noise occurs with irregularity, even in the late evening/early morning hours when no one’s using running or flushing water. I seem to have isolated the noise to be coming from the vicinity of the hot water heater/humidifier area which are located in the basement. Another bizarre thing that happens when the noise occurs . . . if we’re watching TV, there’s static lines that show up on the screen, sort of like when a mixer is turned on. The house is 12 years old and we have lived in it for 2 years, whereas this noise just started 2 months ago. Can anyone help? Thanks!
Try shutting off your humidifier, and see if it stops. Especially if your humidifier is the type that has its own water supply. It could be a chattering solenoid on the intake line. shut the system off , if the noise goes away, youhave probably found the problem. Hope this helps. TK