
Burping & Bubbling. Does your heater groan, bubble, or burp as it heats water? If so, this is a sign of sediment buildup at the base of the tank. The sediment is expanding and popping as it heats.Sediment is bad because it creates a barrier for the burner heat to pass through on its way to the water. Draining several gallons of water from the heater each month helps prevent sediment build up. The Anthony Service Agreement Program Plumbing (ASAP) includes draining your water heater along with 9 other water heater tune up tasks which provide a safe and efficient water delivery system.