Your water heater isn't supposed to be completely silent. You may hear a soft click when the burner starts or notice a low hum from an electric unit. A little operational noise comes with the territory… but rumbling, popping, and hissing? Those sounds deserve your attention.
Your water heater uses heat, pressure, valves, and moving water to give you hot showers and clean dishes. When something inside the system starts struggling, the heater often makes noise before it causes a bigger problem.
If you notice your water heater making a racket, then play it safe and have a plumber investigate. The uniformed and trained plumbers at Mr. Rooter Plumbing are always happy to help.
The Rumble: Sediment Taking Over the Tank
A deep, rumbling sound coming from the water heater during a heating cycle is almost always a sediment problem. That’s when minerals naturally present in the water supply settle at the bottom of the tank over time and form a layer of sediment.
As the heating element tries to increase the temperature, water trapped beneath and within that sediment layer heats rapidly and forces its way through the buildup. The rumbling sound is that water moving through.
Flushing the tank removes sediment in many cases and restores normal operation. If it’s been years since you’ve had the tank flushed, then buildup may have hardened beyond what flushing can solve.
Hearing a rumble from the water heater during heating cycles? Mr. Rooter handles most plumbing repair service the first trip around.
The Pop: A Close Relative of the Rumble
Popping sounds during heating cycles share the same root cause as rumbling (sediment buildup at the bottom of the tank), but the pop happens when steam bubbles form beneath the sediment layer and burst through it as the water heats.
As you can imagine, this is a more serious stage and it’s always advisable to have a plumber in Lawrence Park, PA investigate.
The denser the sediment and the hotter the element, the more pronounced and frequent those pops become. In heavily sediment-laden tanks, the popping can be rapid and loud enough to hear from other rooms.
The Hiss: Pressure, Leaks, and Red Flags
Hissing sounds from a water heater deserve immediate attention because they point to two distinct problems, one of which requires urgent action:
- A hiss during the heating cycle often indicates that the temperature and pressure relief (T&P) valve is releasing small amounts of water or steam. The T&P valve is a critical safety component that opens to release excess pressure.
- A hiss accompanied by the smell of rotten eggs is a strong sign of a gas line leak. If your water heater is gas-powered, then get out of the building before calling for emergency help.
Hearing a hiss from the water heater? Do not wait to see if it gets louder. The plumber team at Mr. Rooter Plumbing can help with water line and gas line issues. Our uniformed and trained plumbers can work on residential as well as commercial plumbing systems.
New Units Make Noise Too
Poor installation or production flaws can result in noise coming from a new water heater, too. Don’t brush off odd noises. Have a plumber look into the issue before things get out of control.
Mr. Rooter is proud to offer quick and affordable water heater repair around the clock. Call or message us at any time of the day to nip issues in the bud.
Call Mr. Rooter Anytime
Need water heater repair NOW? Call or message Mr. Rooter Plumbing to speak with a live representative. Our dedicated plumbers are ready to dispatch to your home or business today.
