Why Is My Gas Hot Water Heater Chirping

Why is my Water Heater beeping and how do I fix it?

Water heaters are an integral part of many people’s homes and places of business. Bathing, cooking, and drinking are all made possible by the heat provided by these organisms. Water heaters, on the other hand, are sophisticated devices that occasionally require a little assistance, and they are not without flaws. They can fail for a variety of causes, all of which result in their emitting a beeping sound. And, while the noise may be bothersome, don’t be concerned since you may be able to resolve your issue without the need to hire a professional plumber.

What follows is an explanation of what might be causing your water heater to beep, as well as instructions on how to fix it.

According to one plumbing business, the most typical cause for a water heater to beep is that the pilot light has gone out in the tank.

As soon as you switch on your water heater, a little flame at the bottom of the tank begins to burn.

  • Despite the fact that this is a rather straightforward remedy, there is a possible concern with this approach.
  • If the pilot light goes out, it must be re-lit or replaced due to a malfunctioning element in the fixture.
  • Look online for information on how to turn on the pilot light on your individual make and model of car or truck.
  • If you are unable to relight or replace your pilot light on your own, you should seek the services of a licensed plumber in your region for assistance.
  • You should get assistance from a skilled plumber if your water heater is beeping.
  • If your water heater is beeping and you are certain that it is not beeping because of the pilot light or excessive pressure, you should get assistance from a licensed plumber.
  • Another typical explanation is a low amount of water in the tank.

If you believe that your water heater is beeping because it requires care, take action as soon as possible to avoid a problem from becoming worse.

Your refill tube is responsible for delivering water to the bottom of the tank, so if it stops working, your water heater may not be able to properly replenish when the tank is running low.

Another possibility for why your water heater is beeping is because there is a problem with the temperature.

An automatic temperature regulator ensures that the temperature remains constant at 140 degrees Fahrenheit in the majority of units.

This indicates that the water heater is either overheating or not warming up to the temperature set by the thermostat, depending on the situation.

The thermocouple is a type of temperature sensor that is commonly used.

The beeping sound that occurs every few minutes indicates that your water heater thermocouple is not functioning properly.

This is something you should bring to the attention of a skilled plumbing technician for inspection.

If this is not the case, you may need to replace your water heater entirely. Maintaining a defective water heater, even if it is an unexpected expenditure, might be hazardous to one’s health. It is always advisable to keep your equipment in good working condition.

The Mystery of the Chirping Water Heater.

This morning, I was woken up by an obnoxious noise. There was a faint chirping sound coming from someplace in the distance. I went to the restroom to make sure everything was okay. There were just faint sounds. It’s possible that there’s a water leak. There are no leaks. After that, I looked in the closet in the master bedroom, which had a gas water heater. It is around 10’x10′ and is used to store out-of-season apparel, old blankets, luggage, and other miscellaneous items. The water heater, on the other hand, is housed in its own small closet within a closet.

  • One of those carbon monoxide detectors had been installed in the house by Hubby, and the battery was running low.
  • I walked through the home and pulled down all of the smoke alarms, checking the batteries in each of them.
  • The young man is out in the woods with a group of red-neck mates, in search of squirrels.
  • It is possible that some distant relatives will pass away.
  • Everything appeared to be in order.
  • What causes a water heater to create a chirping sound, and why does it do so?
  • I looked up “chirping water heater” on Google and discovered that if the water heater isn’t used frequently, there may be settlement at the bottom.

Water is not being used to its full potential!

In order to remedy the situation, I switched on the hot water at full blast.

As he explains, “I don’t believe I’ve ever heard of a water heater chirping before, Barbara.” Because it being Saturday, I didn’t invite him to come over right away.

A new CARBON MONOXIDE DETECTOR was discovered as I shifted a stack of blankets.


It took me four hours to figure out what was going on with the chirping water heater.

I honestly believed I was going insane. And the two home inspectors, Steve Smith and Charles Buell, who have caused me to become nervous about my water heater were almost both called this morning. Also, just think of how much trouble my husband is going to be in when he returns home!

Why is my heater beeping?

A loud and inconvenient noise woke me up this morning. Somewhere in the distance, there was a chirping sound. I went to the restroom to make sure everything was in order. A slight hum could be heard in the background. Possibly, there is a plumbing problem. It is completely dry. My next step was to look for a gas water heater in the closet in the master bedroom. I found one. Out-of-season clothing, old blankets, bags, and other miscellaneous items are stored in this about 10’x10′ space. Even though it is in a closet, the water heater is housed in its own separate room within the closet.

  • One of those carbon monoxide detectors had been installed in the house by Hubby, and the battery was nearly depleted.
  • I went around the home and pulled down all of the smoke detectors, checking the batteries in each one as I went along.
  • A group of redneck guys has gathered in the woods to go squirrel hunting.
  • Everything seems to be in working condition.
  • When a water heater chirps, what is the cause of the sound?
  • As a result of my Google search for “chirping water heater,” I discovered that if the water heater is not used frequently, there may be settlement at the bottom.
  • The consumption of water is insufficient!

To remedy the problem, I turned on the hot water at full blast.

As he explains, “I don’t believe I’ve ever heard of a water heater chirping, Barbara.” Given that it being a Saturday, I did not request that he come over immediately.

Once again, I discovered a CARBON MONOXIDE DETECTOR when moving a stack of blankets.


To uncover the enigma of the chirping water heater, I had to work for four hours straight.

I honestly believed I was going insane! Steve Smith and Charles Buell, the two home inspectors who have made me worried about my water heater, were on the verge of receiving phone calls early this morning. Also, just think of how much trouble my husband is going to be in when he gets home!

Do water heaters chirp?

Asked in the following category: General The most recent update was made on January 3, 2020. It’s possible that the beeping is a warning that the components are about to burn out. A gas heater may also serve as a signal if there is a gas leak if you have one installed. No, I don’t have any gas in my home. The hotwater heater is completely stocked with warm water. Actually, the popping sounds is water boiling beneath the sediment, which causes the bubbling noise. Because of this, silt accumulates at the bottom of the tank, near the gas burner (for gaswater heaters).

  1. Furthermore, what is the sound of a standard water heater like to hear?
  2. A popping, cracking, or gurgling sound may be heard when water becomes trapped under these build-ups and the water becomes heated from the electric elements or the gas burners under the tank that are turned on while the water is stuck.
  3. Simply put, what is the source of my electric water heater’s chirping?
  4. The presence of a leak may be visible if the floor is moist near the water heater, but the leak might be further down the line.
  5. Beeping may potentially indicate the presence of a gas leak.
  6. Water heatersoften run flawlessly for a decade or more without any maintenance, so they’re easy to overlook or ignore.
  7. Once a year maintenance pays dividends in terms of prolonging the tank’s life span as well as preserving the efficiency and safety of your water heater.

8 Reasons Why Your Tank/Tankless Water Heater is Beeping+Fix

Do you hear a beeping sound coming from your tank or tankless water heater? Are you perplexed as to why it is acting this way? Let’s find out what’s going on and try to correct it. The most typical reasons for a water heater to beep are scale accumulation, water or gas leaks, component failure, a clogged air filter or vent, and a variety of other factors and conditions. Having experienced the annoyance of waking up to the beeping sound of a water heater in the middle of the night, I understand your frustration.

All of them are equipped with a beeping system.

Most of the time, it is a minor problem or even a failed alarm, but it can occasionally be a significant issue, such as a gas leak.

In today’s article, we’ll go over some of the most frequent faults that might cause your water heater to produce that annoying beeping noise, as well as some tips on how to fix it if it does. So let’s get this party started right away.

The reasons why tank/tankless water heater beeps and how to stop it

The water heater either stores the water all of the time or passes the water through it (in the case of a tankless water heater). Minerals such as calcium and magnesium are present in this water, and these minerals are harmful to metal components such as heat exchangers. If the water entering your house is hard (meaning it has a high concentration of the above-mentioned components), the particles in the water begin to accumulate and decrease the performance of your water heating system over time.

In this instance, flushing and descaling of the sediments are required within the unit.

You can find instructions on how to flush your water heater here.

2. Leakage: Either water or gas or faulty sensor

Another typical reason for a water heater to beep is a leaking water heater tank. It is possible that there is a leak of either water or gas. A contemporary water heater is equipped with a leakage sensor, which helps to keep your home safe from water damage. If you notice water puddles around or under your tank or tankless water heater, or inside the tankless unit’s casing, you have identified the source of the problem. You’ll have to come up with a solution dependent on the cause of the leaking at this point.

If your device is still under warranty, you should get in touch with the manufacturer.

If you notice the stench of rotten eggs coming from a gas-fired model, this indicates a gas leak.

3. It’s also possible that air intake or vent channel is blocked

When this occurs, the tankless water heater emits a code 10 beep, albeit the exact code will vary depending on the manufacturer. A gas-fired water heater requires a constant supply of fresh oxygen to ensure proper combustion. Whenever the air intake filter or combustion fan becomes clogged or obstructed for a number of causes, the burner becomes choked and unable to ignite properly. Furthermore, when the vent is obstructed, flue gas cannot exit the system and is therefore prevented from doing so, resulting in the “beeping.” Make that the filter or vent is clean and in working order.

4. Overheating warning

The heating components are one of the things that might go wrong at times. A faulty heating element or temperature sensor might cause the water to become too hot. The skin can be burned by extremely hot water. Fortunately, the majority of the time, your tank or tankless water heater will display an issue code along with a beep when this occurs. Different brands have their own set of codes. I recommend that you consult your owner’s handbook or visit the manufacturer’s website to look for the code and then hire a professional to fix it.

5. System overload in case of tankless water heater

Tankless water heaters have restrictions in terms of the amount of hot water they can produce each minute, according to the manufacturer. That is why appropriate sizing is essential, and I have created a comprehensive tutorial on how to do it here.

If you exceed this limit by using numerous hot water faucets at the same time, the temperature or flow of the water will often reduce. Some types, on the other hand, can even emit a beeping sound. Close all of the taps and check to see whether the beep has stopped.

6. Low inlet supply or clogged inlet or aerator

Keep in mind the size build-up we discussed in point one of this article. That scaling can clog and block your incoming line, reducing the amount of cold water that can be sent to the tankless water heater. When there isn’t enough hot water being delivered to the heat exchanger, there is a risk of water overheating in your home. As a result, the water heater sounds an alarm with a beep. The question is, how can you know whether this is the case? Have you observed that the quantity of water coming out of your fixtures is less than you expected, or that the water is coming out hotter than you expected?

See also:  How To Make A Water Filter For Home Use

It’s time to bring in the major guns.

7. Maybe your water heater is low on fuel

This situation only applies to tankless water heaters that are powered by propane. The fuel pressure in certain propane heaters lowers to the point where they emit a beeping signal when the fuel is ready to run out.

8. Excessive water pressure

There will be instances when the pressure of the water entering your home will suddenly increase dramatically. There is a limit to how much maximum pressure a tankless water heater can work at at any given time. Water heaters can be harmed by high levels of pressure. As a result, when such an incidence happens, the majority of tankless water heaters emit a beeping signal.

Fixing Rinnai tankless water heater beeping code 79

On a Rinnai tankless water heater, the error number 79 indicates that there is an internal leak. Look for any evidence of a water spill on the floor. If the tankless water heater’s front panel is not open, the tankless water heater is not operational. Before doing so, be sure the power is turned off. Examine the inside to see if there is any dampness. Carefully dry it out, and the beeping should stop immediately. If the beeping occurs again and the leak occurs, contact the plumber or the manufacturer if the product is still under warranty.

Your call!

So that’s all there is to it for now. I hope I was able to assist you in resolving the bothersome beeping signal from your water heater. If none of the options listed above work out, the best option will be to seek the assistance of a specialist. Hi! In Aberdeen, South Dakota, I work as an HVAC mechanic and am also the author of HWT. Providing plumbing services has been a part of my business for more than a decade. In my more than ten years of expertise in the sector, I have mostly dealt with water heating systems.

7 Common Causes For Your Water Heater Making Noise

Not only are loud noises coming from your water heater frequent, but they might also be an indicator of an underlying problem with your heater that needs to be addressed. Here are some typical water heater noises to look out for: Even if you undertake routine maintenance on your water heater, you may still have a noisy water heater.

Not only can taking the time to analyze the problem calm the situation, but it may also help you avoid more damage. This article discusses the top 7 reasons why you may be having a loud water heater and how to resolve them.

Noisy Water Heater Causes

Depending on how much sediment and mineral deposits are present in your water heater, you may hear any of the following noises:


During the course of a year, silt collects in the tank of the heater. Because of this, it is extremely vital to undertake routine maintenance. Flushing the dirt out of your water heater is arguably the single most critical thing you can do to keep it functioning effectively and, more importantly, to extend the life of your water heater. In the context of water heaters, sediment is defined as any solid substance that collects at the bottom of the tank. There are two ways in which silt accumulates in your water heater:

  • It enters the system through the water supply in the form of sand or other particles. When water is heated, minerals are liberated, and this is a good thing.
Mineral Deposit Build-up

Especially in places with hard water, mineral deposit build-up may be a major concern. As it flows through the earth, water picks up minerals from the soil. From a health standpoint, these minerals, which are predominantly calcium and magnesium carbonate, are completely innocuous. During the heating process, the minerals separate from the water and coat the interior of the tank, covering the components and causing them to fail. Lime scale is the name given to this coating, and the popping sound you are hearing may be the consequence of lime scale build-up.

Sediment Build-up

It is important to clean your water heater on a regular basis to prevent sediment from collecting at the bottom of the tank. As the water heater heats the water, steam bubbles might form beneath the sediment and burst through the sediment. It’s possible that the popping sound you’re hearing is the sound of steam bubbles bursting! Despite the fact that cleansing the water heater is a viable remedy to this problem, it may not be the most effective. There are rare instances when the sediment build-up can reach a point where cleaning the tank is no longer an option, which might result in a leak in your tank.

Some homeowners, on the other hand, prefer to wait until their heater breaks down.

There’s nothing worse than walking into your home and seeing several liters of water on your floor!


As the temperature of the water rises, the water within the tank expands and begins to leak out from beneath the sediment, causing it to overflow. The rumbling sound you hear is caused by the water moving through the sediment. A rumbling sound indicates that sediment build-up has reached a critical level, and this is something to be concerned about. Although this is not a life-threatening situation, it is a sign that your water heater is not running at peak efficiency. It is recommended that you attempt to flush the sediment buildup from the tank.

In light of everything we’ve talked thus far, this is a warning sign that your tank may be susceptible to future difficulties, which may need its replacement in the near future. We strongly advise you to get a water alarm to notify you if your tank begins to leak.

Crackling, Sizzling, Hissing, or Popping

A solid indicator that the sediment build-up at the bottom of the tank has buried the lower heating element in your electric water heater is that it’s producing a popping noise. Additionally, crackling, sizzling, and hissing noises may be produced by this illness. Whenever this occurs, you should empty the tank and remove the heating element to allow you to thoroughly clean the heating element of any sediment and lime scale build-up. Using a wire brush, carefully scrub the heating element after it has been soaked in vinegar.

  • Element of Heat (Heating Element) If you need to replace a heating element in your water heater, be sure you get the correct one for your model number.
  • To unclog your water heater, we’ve produced an article that includes a variety of various approaches.
  • Rather than changing their tank before it leaks, many consumers opt to wait until it does.
  • By notifying you when the sensors detect that water is seeping from the tank, these alarms can help you avoid a major problem.
  • Water Detection This low-cost water alarm has the potential to save you hundreds of dollars in water damage.

Restricted Water Flow

If you notice that your water heater makes noise when the hot water is switched on, it might be due to a restriction in the passage of water through the heater. When this occurs, you will frequently hear a sizzling sound, which may suggest that there is a problem with a valve.

  • Make that the T P relief valve is working properly. This is a safety valve that is meant to allow water to escape if the tank ever experiences an excessive amount of pressure. Should a sizzling sound be heard coming from the T P valve, we recommend that the water heater be turned off by turning off the electricity and turning off the faucet. Then get in touch with a competent plumber
  • Check that the water inlet valve is fully open by turning it on and off. This is the water valve located on the top of the water heater, which permits incoming water to enter the water heater, and Look for kinks in the other water lines and valves as well as the water output valve to ensure that the lines are not clogged and that the valves are completely opened

Check with your local plumber and get FREE estimates today.

Water Pressure Fluctuations

When you hear a ticking sound, it is most likely produced by pressure variations inside the plumbing system. Water heaters frequently utilize heat traps on the water intake and outlet nipples, which helps to enhance the unit’s energy efficiency by preventing heat from escaping via the connections between the tank and the unit. The nipples are positioned on the top of the water heater, and they are where the incoming and exiting water pipes are connected together. If you discover that this is the source of the ticking sound, you may simply remove them and replace them with nipples that do not include heat trapping materials.

Household Plumbing

You may be experiencing noises from your water heater as a result of your domestic plumbing. In fact, it’s possible that the problem isn’t with your water heater at all. During the course of hot water’s journey through your home’s plumbing, the pipes expand and contract in response to changes in the water’s temperature. This can occasionally cause the pipes to rub against the wood structure or loose straps, resulting in a ticking sound as a result of this. To resolve this issue, you can track the sound and try to determine the location where it is strongest.

The temperature of the water heater can also be reduced by a few degrees, which is another feasible solution. This should lower the pressure, which should, in turn, minimize the noise, if not completely remove it.


A leak or a damaged pipe are likely to be the cause of the noise your water heater is producing when water is being heated. Keep in mind, however, that it is typical to hear water entering the tank while hot water is being pulled from the faucet. If the running water noise persists after the tank has been completely filled, you may want to contact a professional plumber to look into the matter. Alternatively, you can attempt to locate the leak yourself by doing the following checks:

  • Check the temperature of the hot water outflow pipe on the water heater to ensure it is operating properly. When comparing the hot and cold pipes, it may seem warmer to the touch, but this should not be the case if there is no hot water being utilized. Placing your ear near the hot water output pipe will help you hear better. If there are no hot water faucets open, there should be no sound of water passing through the pipe. If you hear water rushing, you have a leak
  • Otherwise, call the plumber. Check the T P Valve for proper operation. There is a lengthy tube linked to the T P Valve, and the tube may flow directly into a drain or through a wall at certain times of the year. If your heater is configured in this manner, it is impossible to determine whether or not the T P Valve is open. By holding the pipe in your palm, you may check the temperature of the pipe. If it is hot, it is most likely because your T P Valve is open. Examine the valve carefully to see if it can be closed and opened again to check if the water flow is stopped. If this is the case, you’ll need to repair the valve
  • It’s possible that you have a burst pipe someplace in your home. Make a note of the reading on your water meter and refrain from using any water for a few hours. After then, double-check the reading. If your water meter indicates that you have used water, you are most likely dealing with a ruptured pipe.

Check with your local plumber and get FREE estimates today.


In the event that you have a gas hot water heater and you hear a sizzling sound when the burner is turned on, there is a significant probability that you are experiencing condensation problems. When condensation accumulates on the burner components, it might drip onto the burner components, causing a sizzling sound to be heard when the burner is hot.

Water Heater Leaks

In addition, a sizzling sound might be produced by a leak in the water heater’s internal tank. The sizzling sound is generally heard when the burner is turned off, indicating this is the source of the problem. You should inspect your water heater for leaks; you may even discover a puddle nearby. In many circumstances, a sizzling sound indicates that it is necessary to consult a skilled plumber.

Water Source

Depending on whether your anode rod is comprised of aluminum and whether your water supply has a highly acidic pH level, a chemical reaction known as aluminum hydroxide may occur. This is really a fairly prevalent problem in locations where chlorine/chloramines are present in the water supply, because chlorine has a pH level of 11.7, which is quite acidic. As a result of this reaction, a gel-like material develops at the bottom of the tank and/or along the anode rod’s perimeter. If this is the case, you’ll need to flush and deliminate your tank before replacing the sacrificial anode rod with a magnesium-based alternative.

Water Hammer

The banging sounds coming from your hot water heater might be caused by a problem called water hammer, which is short for water hammering. When the water flow is abruptly interrupted, there is nowhere for the water to go inside your domestic plumbing system, therefore the water rushes backwards to its original source. In this scenario, the water heater is to blame. The sound you’ll hear is often a knocking or a hammering sound, and it occurs when the water is turned off quickly and suddenly. Water hammer has the potential to be quite devastating.

See also:  How Long Does The Average Water Heater Last

Within the pipes is enough force to cause the water heater’s tank shell to expand, or a flue tube to collapse, or even distort the top of the tank’s shell!

Consult with a Professional Plumber in Your Area Get FREE Estimates Right Now!

These devices are designed to absorb the shock wave that occurs when the flow of water is abruptly stopped.

Arrestor de Hammer de Agua (Water Hammer Arrestor) It is constructed with an air chamber to absorb the shock that occurs when the pressure from within the plumbing system hits the device, which is known as a water-hammer arrestor.

Heating Element

If you notice that your electric hot water heater is generating a buzzing noise, it is possible that the top heating element is malfunctioning. In this system, there are two heating elements: an upper heating element and a lower heating element. It is not uncommon for the higher heating element to vibrate and hum when cold water is introduced into the tank and circulated throughout the system. Even though it’s inconvenient, when your water heater vibrates, it’s often not hazardous to either the heating element or the water heater itself.

Electric Water Heater Heating Element WrenchThis heating element wrench is used to tighten the heating element on an electric water heater.

Why is My Tankless Water Heater Beeping?

No- or low-maintenance tankless water heaters are commonly referred to, but it does not imply that they are devoid of issues or malfunctions in any way. As with any mechanical system, there is a wide range of potential problems that might develop from time to time. The good news is that tankless water systems may provide you notifications if anything isn’t operating properly. If there is a problem with your tankless water heater, it will “beep” and show an error code to notify you to the problem.

You may get the description of the error code in the service manual or on the internet.

The possibility of mistakes remains, though.

What it Means When a Tankless Water Heater Beeps

The error codes that are utilized, as well as their significance, will differ from one manufacturer to the next. However, the sorts of issues that arise are quite similar across the board. In this post, you will learn about some of the most typical problems that you may have when using a tankless water heater. So let’s get this party started.

1. There’s a Build-Up of Limescale

A variety of minerals, including calcium and magnesium, are present in the water that enters the tankless water heater. The water absorbs them as it runs through the earth, which may include minerals that are harmful to the environment. The amount to which they are present in your water supply is determined by your geographic location. The concentrations differ from one place to another. You’ll need to speak with your local water supplier in order to acquire the most accurate information for your location.

It quantifies the amount of calcium carbonate present in a given volume of water in milligrams per liter:

Classification mg-CaCO3/L
Soft 0–60
Moderately hard 61–120
Hard 121–180
Very hard 181

If you reside in one of the hard water locations, you may notice a buildup of limescale in your tankless water heater’s pipes and fittings. The same thing can happen in locations with softer water, but it will take a lot longer before it becomes a significant concern.

The buildup of limescale can have a negative impact on the efficiency and economy of your tankless water heater, as well as the way it operates. Depending on the severity of the problem, you may need to cleanse or descale your system.

2. The System Has Detected a Water Leak

Tankless water heater error codes that indicate a water leak can be caused by any of the following two scenarios: One possibility is that you do really have a water leak. The second possibility is that there is an issue with the water leak sensor. Whatever the reason is, your tankless water heater may be forced into shut-off mode. This is done in order to keep leaky water from causing damage to the unit or your property. Sometimes the leak will be obvious because you’ll notice water pooling on the floor near the water heater or within the casing, which indicates that the leak has occurred.

  1. This indicates that it is time to hire a plumber.
  2. Check to see that the wire hasn’t fallen loose or been damaged in any way.
  3. As a result, dry the sensor and any moisture that may have accumulated in the heater casing before restarting the heater.
  4. If not, try something else.
  5. If you continue to receive the error code after restarting the system, unplug the sensor and try again.
  6. Unless the sensor is malfunctioning, it is likely that the sensor has acquired a problem and that you will need to replace it.

3. The Water Flow Rate Is Too Low

When it comes to your tankless water heater, the flow rate of the water is critical to its successful operation. In order to ensure that their models operate at a minimum flow rate in gallons per minute, each manufacturer should declare the minimum flow rate for their models. If the flow rate is less than the bare minimum provided for your model, the heater will not function properly. As a result, you will not have access to hot water. This is due to the fact that the system requires a minimum flow rate in order to activate the flow switch, and if the flow rate is insufficient, your heater will not ignite.

  1. The water is not going to heat up.
  2. As a result, it shuts down to prevent further harm.
  3. You should be able to receive hot water if you open the faucet carefully.
  4. It is possible that the input filter at the point of entry for the incoming water supply has gotten blocked with grit or particles.
  5. In addition, you should make sure that the faucet aerators aren’t obstructed.

Another possibility is that there is trapped air in the system, in which case you will need to bleed the system. Another possible cause is the accumulation of limescale, which was previously mentioned. The buildup of limescale in pipes can cause them to get clogged, reducing the flow rate.

4. You’ve Overloaded the System

Having a consistent flow rate of water is essential for the optimal operation of your tankless water heater. In order to ensure that their models operate at a minimum flow rate of gallons per minute, each manufacturer should state the minimum flow rate for their models. If the flow rate is less than the bare minimum indicated for your model, the heater will not function. This means that you will not have any hot water available to you. The reason for this is because the system requires a minimum flow rate in order to activate the flow switch, and if the flow rate is inadequate, the heater will not ignite.

  1. Heat won’t be produced by the water.
  2. To avoid inflicting further damage, it shuts down.
  3. In order to acquire hot water, try opening the faucet slowly and steadily.
  4. It is possible that the input filter at the point of entry for the incoming water supply has gotten blocked with grit and particles.
  5. In addition, you should make sure that the faucet aerators are free of debris.
  6. The accumulation of limescale, which has been mentioned previously, may also be a contributing factor.

5. There’s a Blockage in the Air Supply or Exhaust

In order for the combustion process to take place, your tankless water heater is equipped with an air intake. As well as the fan to bring in fresh air from the outside, there will be an exhaust vent to enable waste gases to escape. A warning notice will appear on your computer screen if any of the air intakes, the circulating fan, or the exhaust vent are broken or clogged. This is due to the fact that if the heater is unable to pull in any or enough air, it will be unable to heat the water. In the event of a blockage in the exhaust vent, hazardous waste gases can become trapped in the system, leading it to shut down for safety concerns.

Fan and vent obstructions are commonly caused by an accumulation of dust, dead insects, lint, and bird nests, among other things.


You’ll know what to do the next time your tankless water heater begins to beep, because it’ll alert you that something isn’t operating properly. As a result, look at the error code displayed on the display panel.

Using the error code, you may determine what kind of problem was encountered by the system and how it was resolved. This post brought to light several often encountered issues. Check your user manual or the manufacturer’s website for a more thorough list of potential problems and solutions.

Troubleshooting Guides For Tankless Water Heater Error Codes

  • Troubleshooting Tankless Water Heater Error Codes: Rinnai
  • Troubleshooting Tankless Water Heater Error Codes: Rheem
  • Troubleshooting Tankless Water Heater Error Codes: Navien
  • Troubleshooting Tankless Water Heater Error Codes: Navien Troubleshooting Noritz Tankless Water Heater Error Codes
  • Troubleshooting Bosch Tankless Water Heater Error Codes
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Buzz, Hiss, Screech – Why Is My Water Heater Making Noise?

What is the source of my water heater’s buzzing, hissing, and screeching? Noises Produced by a Hot Water Heater The presence of sediments in a water heater is producing noise. You might be wondering what the source of the noise coming from your water heater is. Should you undertake routine maintenance, contact a plumber, or simply ignore the sounds that are bothering you? Are you concerned that it may be nearing the end of its useful life? We all know that replacing a water heater can be a costly endeavor, so it’s important to understand which sounds are potentially dangerous and which ones are not.

The following is a list of the most often reported water heater noises, as well as possible remedies that you, as a homeowner, may be able to put into action.

Your Water Heater might be Making Rumbling, Crackling, or Popping Noise

Water heaters are devices that heat the water in a tank. Was it ever brought to your attention that when the water heats, little particles of silt are cooked out of the water and gather on the element tubes and anode of your water heater? Layers of sediment build up inside your tank, trapping water behind the sediment layers and causing them to overflow. Because of the rising temperature of the water, bubbles rise through the sediment deposits, occasionally breaking off pieces of sediment and causing them to become loose in the tank.

Some homeowners have reported hearing a rumbling sound and are perplexed as to what it might possibly be.

Cleaning and Flushing a Water Heater

What Can You Do To Help Fix This?

If you hear your water heater creating cracking, popping, or rumbling sounds, it’s likely that sediments have accumulated in the tank and are causing the problem. If your water heater is less than ten years old, you may get away with using a deliming combination to flush the sediment out of the tank, followed by a thorough flushing and draining of your water heater to resolve the problem. It is recommended that you clean and empty your water heater once a year in order to avoid this problem. It is possible that too much sediment can affect the efficiency of your water heater, as well as the life of your water heater.

If the tank is still making noises after you flush it, you may want to check the temperature setting on the thermostat.

Reduce the temperature on your thermostat to 120 degrees or lower (this is suggested to avoid unintentional scorching) and then listen to see if the noise persists.

It’s definitely wise to start looking into what sort of water heater you’d like to use in the future and to make plans for when you’ll need to replace your current water heater.

A water heater replacement might be difficult, but South End Plumbing will assist you in picking the most appropriate model for your needs.

Is Your Water Heater Humming?

If you are hearing humming noises, it is most likely due to a loose water heater element, which causes the water moving around the element to generate vibrations that sound like humming when it is turned on. This sort of noise should not be a source of concern. If the humming noise is bothering you and you want to get rid of it, you can have a plumber tighten the element in your water heater. If a homeowner is handy, they may also tighten the element themselves if the element is loose.

See also:  What Does A Hot Water Heater Cost

What If Your Water Heater Is Making A Hammering Noise?

This is referred to as “water pounding” by some plumbers. This is an actual pounding of the pipes against the wall when they are being mounted. This can occur when the pipes are not properly secured and are slapping against the studs or the inside of the wall as a result of the high water pressure. It can also be produced by the rapid switching on and off of water, such as when a toilet is flushed or when a water pump is used that does not have a holding tank to spread the flow of water at a more gradual rate.

As a result, you shouldn’t be concerned about having to replace your water heater as a result of this problem.

Water hammer arrestors are available for purchase and installation by professional plumbers, which should resolve the problem.

What If You Hear A Hissing Noise At Your Water Filter?

The presence of a hissing sound is typically indicative of an air leak. In order to locate the water heater or a pipe leading to it, you’ll need to search for water or steam coming from it. A leak of this type almost often need the services of a professional plumber to repair. In circumstances when the water heater is old, it may be preferable to replace it with a new one. Check to see if you have any water damage someplace, and then call South End Plumbing to have your water heater serviced.

Do You Hear Your Water Heater Making A Screeching Sound?

The high-pitched noises you’re hearing are water being driven through a small aperture under tremendous pressure. This is typically caused by a valve that has not been fully opened. Depending on where you live, the valve in concern may be located at your water heater, closer to faucets in your house, or near an appliance. The position of the valve may be determined by listening closely to establish where all of the noise is coming from. If this is the case, you may need to replace the valve on the water heater itself; be sure this is something you are experienced with or have a professional plumber do it because there is a great danger of damage due to steam burns if you do not.

If the source of the noise is closer to a faucet or an appliance, you may be able to repair the valve yourself if you’re adept with a wrench or other tools. To begin, just ensure that the water supply to that sink or appliance has been turned off before adjusting or replacing the valve.

Is Your Water Heater Making A Ticking Sound?

Tapping or clicking noises coming from your water heater are frequently caused by heat traps or check valves that have been added to ensure that water is flowing in the appropriate direction. This sort of noise can also be caused by the heating and cooling of water in the pipes. When it comes to ticking or tapping sounds, some homeowners are sensitive, and you may replace the heat trap with a dielectric nibble to satisfy them. There are several instances in which this does not ensure that the noises will cease to be heard.

“If it ain’t broke, don’t attempt to fix it!” is a popular saying in the business world.

If you would want your water heater examined, please do not hesitate to contact us.

To book a visit, please call us at 704-919-1722 or complete the online form.

13 Common Reasons Why Your Water Heater Making Noise

“Why is my water heater producing noise?” is a frequently asked topic by homeowners. These sounds can be described as a hum, a pop, or a rumble. If you listen closely, you could hear a crack or perhaps a small sizzle. Showering while using a loud heater, on the other hand, might turn into a nightmare. So, what is the root source of this problem? Some of the noises, on the other hand, might indicate a problem. As a result, you will need to determine the source of the problem in order to prevent more problems with the device.

You may use this method to figure out what is causing your water heater to be noisy.

Top Reasons for a Noisy Water Heater

Here are seven possible explanations for the noise coming from your water heater.

  • Tank for Sediment Storage The presence of mineral deposits, poor water flow, frequent changes in water pressure, leaking and condensed tanks are all problems. Obtaining access to water supplies
  • In what condition is the heating element?

Tank Containing SedimentMineral Deposits

If the storage tank on your water heater is clogged with debris, it will only store water at the place where the burner is located on the water heater. Here, when the machine heats water, it makes the same noise as a coffee maker while it is operating. This noise is caused by the water bubbles that form when it flows through the sediment layer. Consider the scenario of preparing water in a covered pot to have a better understanding of the situation. As soon as the water is heated, it begins to bubble and the lid begins to move.

The debris, on the other hand, might cause the tank to overheat.

Finally, there will be leaks in the tank that may cause troubles in your home.

Any of these problems might result in thousands of dollars in building damages if they are not addressed immediately.

So, what can you do to keep dirt from accumulating in your tank? You’ll want to clean your water heater as often as possible to keep it working properly. If you put off this activity for a lengthy period of time, the quantity of residue that builds up may make it difficult to flush the system.

2. Accumulation of Mineral Deposits

If you live in an area with hard water, the mineral deposits in your heater tank will begin to build up in your tank. Various minerals, such as magnesium and calcium carbonate, get trapped in this area when water flows towards your home. Fortunately, none of these elements may be harmful to your health.

3. Popping

When you have been using your tank for several years, you may notice an accumulation of residue that causes popping sounds. This implies that you will need to thoroughly clean out your tank in order to eliminate the limescale buildup that has formed. Residue may take on a variety of shapes and sizes, and this solid particle settles to the bottom of the tank. It can be made up of sand, small stones, and other small particles. It is also possible that minerals are responsible for the formation of limescale on the internal walls of the heater.

4. Rumbling

Whenever the water heater heats up, the liquid expands and flows through the debris. When this occurs, you will hear a rumbling sound, which is especially noticeable when the water is moving through the ground. Rumbling in the tank indicates that there is a significant quantity of filth in the heater, which should be cleaned out immediately. If it is not hazardous, it indicates that your heater will not work as expected in the future. Make certain that the dirt in the tank is removed to avoid this problem.

5. Crackling, Sizzling, Hissing, or Popping

Do you hear any cracks, sizzles, hisses, or pops when you switch on your electric water heater, particularly when it is first turned on? The debris has then engulfed the components of the tank that are responsible for boiling water. Make careful to empty the tank and clean off the debris that has accumulated on the heating element at this time. To do this, remove the object from the heater and soak it in a dish filled with vinegar before cleaning it. Make sure to clean up after yourself using a wire brush.

As a result, you will need to purchase a new water heater.

It is best to utilize a leak detector made specifically for water heaters in order to detect a leaking tank.

These gadgets are simple to use and reasonably priced, and they can identify leaks in as little as a few minutes.

Poor Water Flow

If you hear a sizzling sound coming from your heater, this indicates that water is not flowing freely into its tank. You may identify the source of the problem to a few of valves in the unit. Go to the temperature and pressure relief valves and turn them on. This mechanism allows water to be released from the storage tank, which is particularly useful when there is excessive pressure. If you hear a sizzling sound coming from this item, immediately turn off the electricity and water. After that, get a local plumber to come out and do some repairs.

You may also have a look at the valve that regulates the flow of water into the storage tank. Check to see that all valves have been opened. In addition, I urge that you check other lines for bending as well. In addition, you should search for any closed valves that need to be opened.

Frequent Changes in Water Pressure

Different pressure levels in your plumbing system might also cause your heater to be loud.

7. The Pipes in Your Building

Noisey heaters might also be caused by different pressure levels in your plumbing system.

8. Ticking

Having frequent pressure variations in your pipework will result in the production of a ticking sound. A water heater is often equipped with nipples that allow it to be connected to the pipes. These nipples include characteristics that allow you to store heat and make your heater run more efficiently. It is necessary to replace this piece if the ticking is caused by the heat trap in the model.


Remember, as we discussed previously on this page in our “Reasons Why Your Water Heater Is Making Noise,” it is possible for heaters to leak and make noises. If your device is experiencing this issue, it will emit a sizzling sound, which is most noticeable when you switch off the burner. In order to resolve this issue, you need contact a professional plumber in your area. Identify the location where a pool of water has formed if you cannot locate the leaky heater.

10. Sizzling

If you have a gas water heater that makes sizzling noises, what should you do? In such case, condensation is a plausible explanation. When water droplets develop in the tank, they have the potential to fall onto the unit’s burner. If the heater becomes too hot, it will sizzle as soon as the water comes into contact with it.

Faulty Heating Element

Some water heaters create buzzing noises when they are operating. They also feature a heating element on the top and bottom of the heater, which is a nice touch. When cold water is introduced into the tank and circulated throughout the unit, the top portion of the unit will shake and produce the sound. The hum can be irritating to everyone, but it will not cause damage to the heater or its components. Increase the tightness of the heating element to resolve this issue.

Source of the Water Supply

Each of the following noises is related to the current condition of the water. They are as follows:

12. Popping

The noises that follow are related to the state of the water itself, as described above. Among them are:

Other Noises

Additionally, other kinds, in addition to standard heaters, might generate irritating noises. For example, the sound produced by an electric tankless water heater is distinct. Even a tankless gas water heater is susceptible to the same problem. If you hear a clicking sound, this indicates that the flow switch is being turned on and off (completely normal). If you notice more noise, look for debris caused by hard water in the pipes. Water softening can be accomplished with the use of a special appliance.

However, when used as a storage unit, they make very little noise.

How Can You Solve This Problem?

Solving this problem will need further work and expertise. You will thus want the services of a professional plumber in order to find a satisfactory solution. If you put off the repair, you will wind up with higher energy and water expenses in the future.

Wrap Up

Many households are plagued by the “electric water heater creating noise” problem. Other types of heaters, in addition to this particular model, are affected by this problem. The source of a bubbling noise coming from a water heater can be traced to garbage. If your water heater is making noises that sound like water is running, you will need to check for leaks. Check the heating element if you are trying to figure out where the “water heater is generating noise and humming” problem came from.

Parts that are filthy and systems that are inefficient are examples of this.

To get rid of the noises, clean out your unit or replace any worn out parts or the tank. It is possible that you may need to contact your plumber. If you have any questions or comments, please feel free to post them in the comment box provided below.

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