Noisy Tankless Water Heater Falls Church VA | Plumbing Repair Guide
If your tankless water heater is making weird noises—banging, humming, or clicking—you’re not imagining it.
As a veteran plumber serving Falls Church, I’ve seen what these sounds can mean, and trust me, they’re more than just an annoyance.
Let’s talk about what’s going on when your tankless water heater starts talking back.
1. Banging Sounds? It’s Probably Scale Buildup.
That loud banging or popping you hear could be caused by mineral buildup inside the heat exchanger.
Over time, especially in Northern Virginia, with our hard water, sediment begins to accumulate.
When water gets trapped under those minerals, it heats unevenly and creates that knocking sound.
It can eventually damage your system if left untreated.
2. Humming or Vibrating? Could Be a Loose Part.
Sometimes, I get calls about heaters that hum or vibrate when they’re running.
That might be as simple as a loose mounting bracket or an internal fan that’s out of balance.
It’s not dangerous at first—but it’s a warning.
Catch it early, and you’ll avoid a more expensive repair later.
3. Clicking or Ticking? Normal—Until It’s Not.
All tankless systems click a little when turning on or off. That’s the ignitor and control valve.
But if the clicking becomes constant or loud, something’s off.
It could be a misfiring ignitor or a dirty sensor trying (and failing) to light the burner.
4. When Should You Call a Plumber?
I always tell homeowners this: if your tankless system is getting louder, don’t ignore it.
Noise is your heater’s way of waving a red flag. It’s often cheaper and easier to fix early than to wait until something fails.
Trust a Veteran-Owned Team That Listens to You and Your Heater
At Veteran Plumbing Services, I take pride in solving water heater problems the right way—no band-aids or guesswork.
I’ll inspect your system, explain what’s causing the noise, and get it running quietly and efficiently again.
If you live in Falls Church and your water heater is making a racket, give me a call.
📞 Call Veteran Plumbing Services today at 703-791-1339
I’m Dennis Rollins. I served my country, and now I’m here to help you protect your home.
📞 Schedule online Veteran Plumbing Services Anytime — Day or Night
