Sediment buildup in the tank is a common cause of many water heater noises.
Keep reading to better understand why your water heater is making noise and what each sound means.
Warning
DIYers should avoid working on a water heater.
The Spruce / Kevin Norris
These common water heater noises are mainly related to tanked water heatersparticularly gas or electric.
The best solution for this sound is to flush anddrain the tankto remove any built-up sediment.
The sound is created when steam bubbles form under the sediment and burst as the water heats up.
The Spruce / Kevin Norris
A quick solution is to use a descaling product to help break down the limescale and minerals.
A plumber can diagnose and fix this issue.
Rumbling or Vibrating
Rumbling of vibrating sounds are, like popping, brought on by sediment buildup.
The Spruce / Kevin Norris
It is a regularly occurring issue with hot water tanks, especially if you live in areas withhard water.
In electric heaters, these sounds occur when the lower heating element is buried by sediment.
Prevent this issue by annually draining andflushing your water heater.
The Spruce / Kevin Norris
Internal condensation dripping onto a gas heater’s burners can also cause a sizzling sound.
Condensation inside the tank could be a sign of aleaky water heater.Contact a plumber to inspect the tank.
This results in a pressure surge within the system.
The Spruce / Kevin Norris
A water hammer arrestor or pressure-reducing valve could address recurring issues.
you might reduce the temperature to see if that remedies the issue.
It is easiest to first try and visually identify a leak.
The Spruce / Kevin Norris
Check for visible water on top of and underneath your water heater and around the connected pipes.
Rust on gas water heaters could indicate a leak.
Once you identify a leak, shut the electricity or gas and water off.
Good news is most of these issues are harmless.
Loose pipe straps aren’t serious, but tightening or replacing them is a good idea.
This will stop the ticking sound and prevent the pipes from shifting.
First, check the temperature and pressure relief valve.
Call a plumber to help rectify the situation if the lines are damaged, or the sounds continue.
Sediment buildup can be unavoidable if you live in an area with hard water or mineral-rich water.
Flush and drain your water tank annually to prevent sediment accumulation.
Turn off the water and power source and contact a plumber immediately.
The cost to replace a water heater averages about $1,000.
