Why Your Water Heater Makes Noise and What to Check
Last updated: 2026-09-26 · Checked against 8 sources Key Takeaways Table of Contents Why Does a Water Heater Make Popping or Rumbling Noises? Will Flushing Stop a Popping Water Heater? Why Does the Water Heater Bang When a Faucet Shuts Off? Is Clicking or Ticking From a Water Heater Normal? What Causes Whistling or Screeching From a Water Heater? Why Is My Water Heater Hissing or Sizzling? What Sounds Are Normal on a Heat-Pump Water Heater? When Should a Noisy Water Heater Get Professional Attention? A Simple Water Heater Noise Checklist Common Water Heater Noise Mistakes to Avoid Frequently Asked Questions Key Summary Popping or rumbling in a tank water heater commonly points to sediment or mineral buildup at the bottom of the tank. A bang that happens when a faucet or appliance valve closes may be water hammer in the plumbing rather than a problem inside the heater. Light ticking, clicking, humming, or water-movement sounds can be normal, depending on the water-he...