If your water heater is making popping noises, it can be a little unsettling. Water heaters normally make some noise while they’re running, but loud popping, rumbling, or crackling sounds usually mean something is going on inside the tank.
Here in Omaha, one of the most common causes is mineral and sediment buildup from hard water. It doesn’t always mean you need a new water heater, but it is something worth paying attention to.
Why Is My Water Heater Making a Popping Noise?
The most common reason a water heater makes a popping noise is sediment buildup at the bottom of the tank.
As your water heater heats water day after day, minerals naturally found in the water can settle at the bottom. Over time, that sediment can form a layer between the burner or heating element and the water.
Water can become trapped underneath or within that sediment. When the water heats up and turns to steam, it pushes its way through the mineral deposits.
That’s often the popping or rumbling sound you hear.
Think of what happens when you’re heating something in a pan and bubbles have to work their way up through the bottom. Your water heater can essentially be doing the same thing.
Omaha Hard Water Can Make Sediment Buildup Worse
Hard water contains dissolved minerals, primarily calcium and magnesium. Those minerals aren’t necessarily a problem when you’re drinking or using the water, but they can leave deposits behind anywhere water is repeatedly heated.
And your water heater spends its entire life doing exactly that.
Over time, mineral buildup can collect inside the tank. We see the effects of hard water throughout Omaha-area homes, not just in water heaters. You may also notice white buildup around faucets and showerheads or spots on plumbing fixtures and glass.
A water softener can help reduce hardness minerals throughout the home, but it doesn’t undo sediment that has already accumulated inside an older water heater.
Is a Popping Water Heater Dangerous?
A popping noise doesn’t automatically mean your water heater is about to fail.
But it also isn’t something we’d recommend ignoring indefinitely.
A layer of sediment can make your water heater work harder to heat the water in the tank. Depending on the condition and age of the unit, heavy buildup may contribute to reduced efficiency, inconsistent hot water, and additional wear on the water heater.
More importantly, the noise may not always be sediment.
If you notice water leaking around the tank, rusty or discolored hot water, a sudden lack of hot water, unusual smells, or other changes along with the noise, it’s a good idea to have the water heater inspected.
And if there is water actively leaking from the tank itself, don’t wait on that one. A leaking tank typically isn’t something that can simply be repaired.
Should You Flush a Water Heater That Is Popping?
Sometimes flushing a water heater can remove sediment from the bottom of the tank and help with popping or rumbling noises.
But this is where the age and condition of the water heater matter.
A newer water heater that has been maintained regularly is different from an older tank that may have years of mineral buildup sitting at the bottom. Flushing a neglected older water heater isn’t always the simple fix homeowners expect.
Before deciding what to do, we look at the whole picture:
- How old is the water heater?
- Is the tank leaking?
- How much sediment appears to be present?
- Has the water heater been flushed regularly?
- Is the hot water rusty or discolored?
- Is the home running out of hot water faster than it used to?
- Are there other signs the water heater is nearing the end of its life?
Sometimes maintenance makes sense. Sometimes a repair is the better option. And sometimes putting money into an aging water heater doesn’t make much sense at all.
A good plumber should be able to explain the options without automatically trying to sell you a new unit.
How Can You Reduce Water Heater Sediment?
You can’t completely eliminate minerals from Omaha’s water without treating the water, but there are a few things homeowners can do to help protect their plumbing and water heater.
Have your water heater maintained. Regular maintenance can help prevent sediment from becoming years of hardened buildup.
Pay attention to changes. New noises, rusty water, leaks, and changes in hot-water capacity are worth investigating.
Know the age of your water heater. If you don’t know how old yours is, the manufacturer’s information and serial number can usually help determine its age.
Consider your home’s water quality. If you’re constantly dealing with mineral deposits on fixtures, scale, or other hard-water issues, it may be worth talking with a plumber about water-softening options.
And don’t wait until a Nebraska winter morning when six people need showers to discover the water heater has decided it’s done cooperating.
Water Heater Repair in Omaha, NE
If your water heater is making a popping noise, don’t panic, but don’t ignore it either. Sediment and mineral buildup are common causes, especially with the hard water we deal with around Omaha.
Big Birge Plumbing can inspect your water heater, figure out what’s actually causing the noise, and give you a straight answer about your options. If maintenance or a repair makes sense, we’ll tell you. If the water heater is nearing the end of its life, we can help with replacement too.
We’re a family-owned plumbing company serving Omaha, Elkhorn, Papillion, La Vista, Bellevue, Gretna, Millard, and surrounding communities.
If your water heater is popping, rumbling, leaking, or just not keeping up anymore, give Big Birge Plumbing a call. Honest plumbing at a fair price, from our family to yours.
