We all do it, we hear a noise in the house and we say “it’s just the house settling” and most of the time it probably is. However, there are certain situations where that is not true and if you hear these sounds you should take immediate action!
Heating and AC noises, electrical humming, wall or attic sounds, dripping, banging or thumping pipes, water heater noise, well pump clicks and fireplace dripping sounds.
This article from Bottom Line, Inc and written by Danny Lipford, elaborates on each of these and what you should do if they happen at your house.