
Why is my water heater rumbling?
Question: Why is my water heater making noise?
Answer: Water heaters make noise when sediment builds up inside the tank or when there's something wrong with the pressure valve. Sediment build up makes a rumbling noise. Pressure valve problems make a whistling or squealing sound. Pressure valves can be very dangerous; examine with caution.
Learn More
Learn about other water heater noises (hammering, humming) here.