Sometimes, a noise coming from an appliance is a major pain, and it may even alert you to danger in the system. Other times, however, a noise is so faint that it causes little alarm and you feel content to go about your day. A water heater can occasionally make a knocking or popping noise that falls somewhere between these two extremes.
We don’t think any noise from your water heater (or other home system) should be ignored. A knocking noise, especially, can indicate problems that can accelerate the longer you let them go on. We explain what this noise may be and what you should do about it in the guide below.