Why Is My Hot Water Heater Getting Hotter?

Hot Water Heater Overheating: Causes & Fixes

The temperature of the hot water in the tank should be limited in terms of how high it may be adjusted to prevent overheating. If there is no safety device in place to prevent the water heater from overheating, hot water can scorch people’s faces and bodies. For your hot water heater to remain healthy, you must make certain that it does not get much hotter than typical operation.

How Do Hot Water Heaters Work?

Gas and electric water heaters are the two most common types of water heaters. They both serve the same goal, however the way in which the water is heated differs between them. And, despite the fact that each is meant to heat water and keep that heat, your water heater should not be too hot to touch. If it does feel hot, it is probable that there is an issue with the insulation.


  • Gas water heaters heat the water in the tank with the use of a burner. The burners for the gas water heater are situated in the center of the appliance. As soon as the water reaches the temperature specified on the thermostat, the burners will simply turn off until the water cools down to the temperature set on the thermostat once more. In order for a gas water heater to function properly, it will require the following components: a tank, combustion, and air flow.

A natural gas or liquid propane water heater transfers heat to the water by burning the fuel used in the combustion process. Typically, a pilot light is used to ignite the gas in a combustion chamber, which is controlled by a burner. It is also necessary to have adequate ventilation around water heaters with gas burners in order to eliminate carbon dioxide smells from the residence.


Compared to gas-powered water heaters, electric water heaters are more energy efficient. They make use of a heating element that is submerged in the water and activated when the temperature falls below a specified threshold. After passing through the resistive material, the electricity is converted into heat, which is then used to heat the water.

Causes and Solutions for a Water Heater Overheating

A high temperature setting on your water heater, a faulty thermostat, a high mineral content in the water, or a clogged pressure relief valve are all possible causes of excessive hot water production. Each of these concerns has the potential to cause the water from the faucet to be excessively hot.

Temperature Setting Too High

Water heaters are equipped with dial indications that enable you to regulate the temperature of the hot water they provide.Normal temperatures range between 90 and 120 degrees Fahrenheit, although this may be too hot for certain dwellings.Check the thermostat and set it to a lower temperature if required.This troubleshooting approach to fix your water heater is the first step in diagnosing a water heater overheating problem, as the dial may have been mistakenly turned too high in the past.

Electric water heater

Most residential versions will have both an upper and lower thermostat, and they should both be set to the same temperature to ensure that the home is comfortable.Allowing the water heater to sit for around half an hour after running a large volume of hot water can help you to determine which of the thermostats is malfunctioning.Temperature stabilization is achieved by cycling the components in the electric hot water heater.Removing the two access covers from the thermostats after turning off the electricity is recommended.

Remove the insulation and check that all of the thermostats are set to the same temperature and that all of the thermostats are making full contact with the tank’s interior wall.For optimal temperature regulation, complete contact must be maintained.Take a little flat blade screwdriver and turn the dial all the way up to the highest position, then all the way back down to the lowest position.When the thermostat contacts open and close, keep an ear out for an audible clicking sound.

Another option is to use a multimeter to check the continuity of the signal as you twist the dial.The thermostat should be changed if it does not appear to open the contacts when the temperature is reduced to the lowest setting.Remove the thermostat by disconnecting the wires and lifting up on the spring mounting bracket to free it from its mounting bracket.When installing a new thermostat, be certain that the mounting bracket maintains a strong contact between the thermostat and the tank during the installation process.

If you are not confident in your ability to execute this maintenance alone, call a water heater professional for assistance.

Gas water heater 

The gas valve is in charge of regulating the temperature. The valve assembly will have a dial that will allow for temperature adjustment as well as a probe that will measure the temperature of the water flowing through it. It is necessary to replace the valve assembly if changing the dial does not result in the appropriate water temperature being reached.

Malfunctioning Water Heater Thermostat

A faulty thermostat is most likely to blame for your water heater becoming too hot or feeling too hot to touch for no apparent reason.The on and off cycle of water heater elements is controlled by a temperature controller.An automatic safety mechanism is activated in the event of a fault, such as when the thermostat fails to turn off the electricity to the boiler elements during regular cycling.If the reset button is pressed, no power will be supplied to the heating components, resulting in a loss of hot water for the entire house if the button is pressed.

The elements, on the other hand, continue to heat the water even if the thermostat or safety mechanism fails to function properly.As a result, the temperature of your hot water may rise to dangerous levels.A thermostat, on the other hand, can be readily replaced.

High Mineral Content

Most home water filtration systems will not remove all minerals from the water they purify.This type of mineral can conglomerate when warm water is circulated through it and sink to the bottom of the water heater or settle around the heating element as a result of the heating.There will be less efficiency in the operation of a gas water heater if there is sediment in the tank since gas water heaters generate heat by heating from the bottom.When there is a layer of hard sediment on the bottom, it will take longer for the heat to move through the layer of sediment to the water on the surface.

Due to the accumulation of silt on these heating components, they must work harder in order to heat the water.When this happens, it can cause the components to overheat, which is why your water heater suddenly becomes searing hot.Even though the water can absorb some of the heat, it can also cause your water heater to overheat.This also shortens the lifespan of the internal heating components, which will degrade at a faster rate as a result of the increased use.

Pressure Relief Valve Blocked

  • The pressure relief valve permits steam that has built up inside the water heater to be released from the system.
  • If this valve is clogged, it is most likely the cause of your hot water and hot water heater being significantly hotter than typical temperatures.
  • This can result in a ruined tank as well as significant injury to you and your family members.
  • If you hear the sound of water boiling within your water tank, you must immediately turn off the electricity to your water heater to avoid further damage.

A clogged pressure relief valve has the potential to cause a water heater to explode.After you’ve turned off your water heater, you should contact a plumbing specialist as quickly as possible.

Nothing is Too Hot to Handle for the John C. Flood Team

  • If you’re experiencing problems with your hot water heater or any other portion of your home’s plumbing system, call John C.
  • Flood as soon as possible to book an appointment with one of our plumbing specialists.
  • Even better, we’re providing a $75 discount on water heater installs.
  • Keep your family safe and toasty — but not too warm — with a water heater that is in perfect working condition.

Because we want you to save money, our crew takes extra careful care of your water heater.

The Water Is Too Hot In My House

  • In order to determine whether your water is excessively hot, look for steam coming out of your faucet or shower, as well as scorching water from your faucet or shower head.
  • The first thing you should do is check your water heater’s thermostat; you may have a malfunctioning thermostat that needs to be replaced right away.
  • While most water heater problems are urgent because you want a dependable supply of hot (but not too hot) water, this one is urgent for a different reason altogether.
  • Having scalding hot water is a problem for a number of reasons.

If the hot water you use surpasses 111.2 degrees Fahrenheit, it is putting people at risk, particularly those who are prone to scalding or burns such as children and the elderly.It’s also possible that leaving an overheated water heater unattended can result in it bursting!69 percent of water heater failures are the consequence of a gradual leak or a rapid burst, according to the facts.For obvious reasons, this is an expensive problem that, in addition to requiring a new water heater, results in water damage to the surrounding environment.

Reasons Why The Water Is Too Hot In Your Home

So, what can you do to avoid this potentially deadly and expensive situation? A little diagnostic work and immediate attention to the hot water problem will ensure that the hazards are kept to an absolute minimum. What causes the water in your home to be too hot?

Malfunctioning Thermostat

  • The most likely source of this issue is a faulty thermostat, which is described below.
  • Despite the fact that you’ve maintained the same temperature (about 120 degrees Fahrenheit is excellent), your water heater is capable of heating water to far higher temperatures.
  • Turning down the temperature on your thermostat should be the first thing you do after waking up.
  • Wait a few hours to see whether the problem has improved.

Hopefully it has.However, if it does not, it is probable that your thermostat is to fault for the boiled water.

How to Replace Thermostat

  • On natural gas water heaters, the thermostat is integrated into the gas valve assembly.
  • It is not possible to repair a thermostat without also replacing this item.
  • Because of the dangers of dealing with natural gas and the hot water stored in your tank, you should exercise caution when doing so.
  • Take up this assignment only if you are aware of the dangers and are confident in your ability to complete the tasks.

Here’s how you can replace the thermostat:

  1. Locate the new gas valve and replace it. It’s possible that your water heater unit has a model number or other information on it that can help you choose the correct replacement. Additionally, universal valves and thermostats are available.
  2. Turn off the gas valve. The gas line that supplies the water heater must be turned off. Make sure the valve is perpendicular to the gas line before turning it off. Keep in mind that this is not the same as the switch that controls your gas valve.
  3. Wait for the water to cool before continuing. As a result, the water in the tank is too hot to handle, and you’ll need to wait a few hours for it to cool down before proceeding
  4. Unplug the lines that are connected to your gas valve from the wall. The gas line, thermocouple, pilot light supply line, and main burner supply line are all likely to be among these components. Depending on your model, you may also have an electric igniter that has to be disconnected. When it comes to unhooking the lines, you’ll need some wrenches and probably a screwdriver.
  5. Replace the gas valve with a new one. Because a loose fit might result in a gas leak, you’ll want to make sure you achieve a very tight fit. It’s time to fill your gas tank. Close the drain valve and switch on the water supply valve at the same time. Once some water has been drained from the tank, you may stop the pressure relief valve and open a hot water faucet to allow air to escape from the tank and pipes
  6. then reconnect the lines that link to your gas valve. To turn off the gas, turn the valve to the off position. Then, when you’ve completed the tightening process, you’ll be ready to inspect for leaks. Start by turning on the gas connection to your water heater and checking for leaks around the gas valve with soapy water. In the event that there is a leak, more bubbles will occur
  7. after that, you can proceed to ignite the pilot. Instructions for using your new gas valve should be included with your purchase to guide you through these processes.

You’re not up to the task? Make a call to your recommended local water heater professional for assistance with your thermostat and gas valve replacement needs.

High Mineral Content

  • It is also possible that a high mineral concentration can cause difficulties with your water heater.
  • It has the potential to accumulate on the heating components, causing them to overheat the bottom of the tank.
  • The solution to this problem is straightforward: simply cleanse your water heater.
  • However, if this is a regular problem in your house, you may need to consider installing a water softener.

It is possible that a water softener will lower the mineral content of your water, which will also lower the amount of silt that enters your water heater.If you respond quickly to a water heater that is overheating your water, you can prevent damage to your property as well as harm to yourself and your family.When you want assistance with a water heater repair in Orange County, contact Orange Coast Plumbing for assistance.

5 Reasons Why Your Water Heater is Overheating: Here’s What to Do

  • The hot water is a welcome sight in the morning as we get ready for work and we are all relieved to have it available.
  • This morning, on the other hand, is different.
  • You feel a jolt while you wait for the hot water to flow through the faucet for a few seconds.
  • When it comes out of the tap it sputters and steams, almost as if it’s boiling.

You are immediately wide awake and have the good judgment to refrain from touching it.You shut off the water supply and proceed to the basement to determine the source of the problem.What is causing my water heater to overheat?In these conditions, what are the items you should double-check?

5 Possible causes and how to repair them

Here is a list of five probable reasons why hot water is becoming too hot, as well as what you can do to resolve the issue and avoid recurrence of the problem in the future.

  1. The thermostat has been set
  2. the reset button has been pushed out
  3. Thermostat malfunctioning
  4. heating element malfunctioning
  5. temperature and pressure (t&p) relief valve malfunctioning

Thermostat setting

  • I realize this is a no-brainer, yet it happens all the time.
  • It is common for your water temperature to be too high when the thermostat is set incorrectly.
  • When it comes to most water heaters, whether they are gas or tankless, the thermostat is simple to reach and modify the settings.
  • Other types of units, such as electric units, are designed to be more difficult to alter, necessitating the removal of an access panel/insulation and the blade of a screwdriver in order to shift the setting up or down a few inches.
See also:  How Long Does It Take For Hot Water Heater To Drain?

Although it is improbable, it is the most straightforward item to check initially.If your heater has a digital thermostat, it may be appealing to children to tamper with it because they are fascinated by everything digital.It’s when you notice that the water temperature is scorching that you go to investigate.It’s a simple problem to solve.Many state rules limit the temperature of water heaters to a maximum of 120 degrees Fahrenheit.However, they have no influence over the consumer who, after purchasing the unit and installing it in their house, decides to upgrade it to provide hotter water.

According to the makers of HVAC equipment, water temperatures exceeding 125 degrees Fahrenheit can cause serious burns and even death from scalding.Configurations that are recommended In the case of hot water, the suggested setting is there because it is a safe amount to use.You may, on the other hand, opt to lessen it, particularly if you have elderly people or youngsters living in your house who don’t consider before placing their hands into the water flow as soon as it begins to flow, resulting in burns on their hands.In addition to improving safety, lowering the temperature by just 100 degrees Fahrenheit can result in significant savings, amounting to between 3 and 5 percent of your yearly water heating expense.Isn’t that something that should be done?

Excellent work if you were able to resolve your issue this way.Make certain, however, that you remain cautious.For your hot water tank to return to a safe level after being filled with scorching water, it will take an extremely long period.Ensure that everyone in the home is aware of the potential threat until the weather has cooled down.

If that doesn’t turn out to be the answer, what do you look for next?If you want to figure out what temperature water should be at in your house, see the table below, which shows time/temperature connections in scalds:

Water temperature Time to produce a serious burn
120 F More than 5 minutes
125 F 1 1/2 to 2 minutes
130 F About 30 seconds
135 F About 10 seconds
140 F Less than 5 seconds
145 F Less than 3 seconds
150 F About 11/2 seconds
155 F About 1 second

The reset button has popped out

  • It’s also a good idea to check your thermostat’s reset button (also known as a high-limit switch) every now and again.
  • It is installed to keep the engine from overheating.
  • It will activate if the temperature of the water in the tank surpasses 180 degrees Fahrenheit, at which point there is a definite threat of scorching.
  • It automatically turns off the electricity or gas supply to the water heater in order to prevent temperatures from increasing.

The system is designed to safeguard you, your house, and the water heater from harm.A defective thermostat might cause the reset button to be activated.If it is not functioning properly, it will not transmit an order to the heater elements to turn off when the target temperature is reached.The heaters will continue to heat, and the reset button will serve as the next line of defense in the event of an emergency.If it has tripped, it is possible that there is an issue that requires additional study.Reinstalling it will restore the system to its default settings.

If it starts to pop again, you should get it examined by a professional plumber.There are three other reasons why the reset is triggered.The most common reason for the reset button to be activated is a faulty thermostat; however, there are additional possibilities: There is a problem with this element.If the thermostat is in working order, it will properly shut down the electric element.On the other hand, if a heater’s circuitry is destroyed, it is possible that the heater will resume operation in order to continue to heat the water.

Connections that aren’t quite right.If you have a loose connection in the heater, this might result in an increase in heat, which may cause the reset switch to be activated.A faulty switch has been identified.It’s possible that the switch itself is broken and is cutting off when it shouldn’t, causing it to cut out even while everything else is working well.

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Faulty thermostat

  • Is there a problem with the thermostat?
  • They have the ability to and do fail.
  • If you have a contemporary thermostat, it may be powered by batteries, which will need to be replaced from time to time as well.
  • First, make sure they are correct.

They labor under unfriendly settings, and they frequently cease operating and need to be replaced as a result of the environment.The meter may be used to determine whether or not the heater is working, but you must first disconnect the heater from the mains power supply before proceeding.In every other case, you should contact a professional plumber.If you discover that your thermostat is set correctly but that the water has almost reached boiling point, it is possible that the thermostat has failed.It’s important to remember that electric water tank heaters have two thermostats, one at the top and one near the bottom, both of which run in tandem.When the thermostat fails to function properly, the heating components continue to heat the water, raising the temperature to a hazardous level.

a.In gas models, the thermostat is a component of the gas control valve assembly, and it is located at the bottom of the device to ensure proper operation.In the event that it fails, the entire assembly must be replaced.

Faulty heater element  

  • It is possible that the components in your electric heater will collect minerals from your water supply.
  • These minerals will calcify on various sections of your heater, including the heating elements.
  • Without frequent cleaning, this layer of calcification can thicken and accumulate, causing the elements to overheat as they attempt to heat the water up to the proper temperature.
  • They lose efficiency as a result of the mineral coating on their surfaces.

When using a gas-fired heater, the base of the heater might become covered in a thick layer of silt and sludge, which makes it more difficult to heat the water to the appropriate temperature and level.This has the potential to cause the water to overheat.The gas has a difficult time heating the water efficiently.Even though tankless heaters do not have a reservoir, they are nonetheless susceptible to mineral buildup.Particularly widespread in locations with hard water is the presence of cysts.It has the potential to degrade the efficiency of the unit as well as transmit minerals through the system to faucets and shower valves, resulting in reduced flow.

Mineral build-up can cause damage to the interior of the unit and can cause relief valves to get clogged, increasing the likelihood of damage to the unit and your property.

Faulty temperature & pressure (T&P) relief valve

  • If there is water in the drain tray or on the floor surrounding your heater, despite the fact that there is no visible leak, it is probable that your temperature and pressure (T&P) relief valve is malfunctioning and is allowing water to leak.
  • Because of safety concerns, these valves are intended to open and discharge high pressure exceeding 150 psi if the water temperature surpasses 210 degrees Fahrenheit.
  • It is critical to inspect your T&P valves on a regular basis.
  • It simply takes a few seconds to complete the process.

Open the valves and run water through them to flush out any silt that may have accumulated inside the valve.Once it has been cleaned, it should be able to click shut firmly once more and provide a watertight seal.If it gets stuck open, you may have a significant flood in and of itself, but if it gets stuck closed, there is a chance of an explosion and a threat to your family and your property.T&P relief valves should be examined on a regular basis, and if they look to be blocked, they should be properly checked and replaced as needed.If your water heater emits sounds similar to boiling, this might signal that the water inside is too hot.It would be preferable if you turned it off immediately to avoid any major consequences, such as an explosion.

Before you begin

  • Remove the water heater from service by turning off the circuit breaker box and the gas supply before doing any work on it.
  • First and first, safety must be prioritized.
  • Examine the major electrical cables that are not excessively hot, melted, or have burnt sections to ensure they are in good condition.
  • If the heating element is tested, it will reveal whether or not it is shorting.

Overheating can be caused by a shorted element, which is one of the causes.It is the gas valve that regulates the temperature of the hot water in an electric water heater.If the temperature is not appropriately adjusted by hand, you must hire a specialist to replace the gas valve in an electric water heater.


  • Remove the water heater from service by turning off the circuit breaker box and the gas supply before you undertake any work on it.
  • First and foremost, safety must take precedence.
  • Make a visual inspection of the major electrical wires to ensure they are not excessively hot, melted, or damaged.
  • If the heating element is tested, it will reveal whether or not it is shorted.

Overheating can be caused by a shorted element, for instance.It is the gas valve that controls the temperature of the hot water in an electric water heater.If the temperature is not appropriately set by hand, you must call a specialist to repair the gas valve.

What Causes Hot Water To Be Suddenly Way Too Hot?

  • “Ouch!
  • ″All of a sudden, my hot water is far too hot!″ The following is an example of a plumbing problem that is not only unpleasant, but it is also potentially harmful in two important aspects.
  • First and foremost, suddenly hot water gushing out of your faucet or showerhead can result in significant scald burns if not treated immediately.
  • Family members who are not sensitive to discomfort, as well as small children whose skin would boil four times as quickly as an adult, are particularly at risk from this.

Second, a rapid increase in water temperature that is significantly greater than normal is a warning indication.It indicates that your water heater is overheating and may begin to leak or perhaps burst if you do not address the problem immediately.What is the root cause of this weird occurrence in the first place?Here are three possible explanations for why your hot water is suddenly excessively hot.

1. Broken Thermostat

  • If the temperature of your water appears to be unusually high, check the thermostat immediately before dialing 911 to summon a plumber.
  • When a water heater is first installed, the thermostat is often set at 60 degrees Celsius (140 degrees Fahrenheit).
  • However, the suggested setting is 49 degrees Celsius (120 F).
  • Even if your water heater’s thermostat is currently set at 120 degrees, you should experiment with reducing the temperature.

Assuming that lowering the thermostat any more does not cause your hot water heater to shut down within minutes – or your tap water to chill off within a couple of hours – then a faulty thermostat is the most likely source of the problem.Most likely, you’ll have to get a new one.In addition, make certain that your thermostat is flush with the hot water storage tank on the wall.If this is not done, the temperature readout will most likely not be correct, and the heater will simply continue to operate, heating your water to an extremely high degree.Here’s a quick and easy repair you can do yourself: Remove the mounting screws and move the thermostat to a more convenient place.Once you’ve got it in the proper position, re-tighten the screws to ensure that it’s held in place firmly.

This task is difficult and should not be tried by do-it-yourselfers due to the high risk of injury.This is especially true in the case of gas water heaters, where the thermostat is a component of the gas valve and hence cannot be replaced.To get the repair completed, contact a licensed professional plumber with extensive expertise.

2. Mineral Build-Up

The Problem With Hard Water

  • In hard water, such as the water supplied by Ottawa’s municipal well systems, a significant proportion of dissolved minerals, notably calcium and magnesium, can be found in high concentrations.
  • If you have hard water in your house plumbing, the calcium buildup on the interior of your hot water heater will cause it to fail sooner rather than later.
  • That in turn will impair your appliance’s capacity to efficiently heat water and regulate temperature, leading to water that is abruptly too hot or too cold.
  • So, what’s the answer to this problem?

Remove mineral build-up and sediment from your water heater by flushing it.To flush your water heater, turn it off, allow it to cool, then drain away all of the water.Afterwards, the device must be replenished with water and reconnected to the power source.Your water heater will run more effectively, and you will be less likely to get scalded in the shower as a result of this modification.

How Often Should I Flush My Water Heater?

Regardless of whether you have a gas or an electric water heater, the recommendation is the same: get the tank cleansed at least once a year, if not more. Even tankless water heaters should be cleansed once a year since the hot water that goes through them still has a tendency to produce mineral build-up, despite the fact that the water is heated on demand and not kept within the heater.

Home Water Treatment

When using a municipal well system in the Ottawa region, consider installing one of our home water treatment options to reduce the formation of mineral deposits in your water supply over time. Additionally, you will enjoy better-tasting drinking water as well as cleaner, brighter laundry.

3. Faulty Heater Element

  • A malfunctioning heater element is an issue that is exclusive to electrically powered water heaters alone.
  • Electric water heaters can be fitted with one or two heating elements, depending on their size.
  • If a heating element begins to ground out, it will remain on all of the time and overheat to dangerously high temperature levels.
  • Naturally, the end consequence will be uncomfortably hot water – and that’s only to get things started!

The heating element will eventually burn itself out totally over time.Then you’ll have no hot water at all until the element is replaced, which might take several hours.Once again, the replacement of this component should never be entrusted to inexperienced individuals.A professional plumber should be called in to deal with the combination of water and a broken electrical component since it requires extra caution.

When To Replace Your Water Heater?

  • All wonderful things must come to an end at some point in time.
  • Traditional water heaters are estimated to last between 8 and 10 years in most situations (20 years for a tankless version).
  • If your water heater is approaching the end of its useful life and is in need of frequent and expensive repairs, it may be time to consider replacing it.
  • Look for a new water heater that will be both energy efficient and the right size for your family’s use.
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Professional Friendly  Water Heater Repair Or Replacement

In the event that you require water heater repair or replacement, contact the knowledgeable staff at Out of This World Plumbing. Providing you with educated, courteous plumbing service and guidance is what we are here for. For any of your plumbing issues, you may reach out to us at any time of day or night. Today is the day to request a quote!

Why Is My Water Heater Suddenly Getting Too Hot? And Repairs

  • Were you able to get hot water from your hot water heater at a suitable temperature until recently? Learn why your water heater may cause your water temperature to abruptly rise to an uncomfortable level, as well as how to troubleshoot abnormally high water heater temps. Optimal water heater temperature
  • problems caused by too high temperatures
  • common causes of a suddenly too hot water heater
  • how to fix a scalding water heater
  • and more will be covered in this PlumbingNav tutorial.

Optimal Water Heater Temperature 

  • You want your water heater to give hot water that is not too hot to the touch, but not too cold to be scorching.
  • In order to avoid this, the Consumer Product Safety Commission (CPSC) of the United States recommended that you should not set your water heater higher than 120°F.
  • The majority of water heater installers set new water heaters at a default setting of 120 degrees Fahrenheit.
  • While many models, particularly those meant for industrial usage, have the ability to reach temperatures of 140°F or greater, most manufacturers add measures to maintain the device at a safe temperature.

Problems Caused By Excessively High Temperatures

Temperatures in your water heater that are too high might result in hazardous situations for you and damage to your equipment. These are the most common issues that arise as a result of water heaters operating at extremely high temperatures.


When hot water from your water heater comes into direct contact with your skin at high temperatures, you risk burning yourself. The severity of the burn is proportional to the temperature of the water and the length of time your skin is submerged in it. For example, water at 140 degrees Fahrenheit may burn you in about five seconds.

Lower Efficiency

  • It takes a significant amount of energy to heat water to a higher temperature, especially if you have a tank-style water heater installed.
  • Regardless of whether you have a propane, natural gas, or electric water heater, if your water heater produces extremely hot water, you will pay more in utility costs.
  • When your water heater is set to 140°F instead of 120°F, it can lose up to $61 per year in standby heat loss and $400 per year in direct energy use.

Faster Deterioration of Water Heater 

Higher water temperatures cause greater sediment buildup and faster corrosion in your water heater, which might cause it to fail. The tank will degrade more quickly as a result of these operations than if the device were operated at a lower temperature.

Common Causes For a Suddenly Too Hot Water Heater 

When your water heater overheats, you must determine where the problem is coming from and fix it. Consider the following common reasons of unexpectedly higher-than-normal water heater temperature fluctuations:

Temperature is Set Too High 

  • The incorrect setup of the water heater might result in excessively high water temperatures.
  • This can occur during the installation process or if a family member makes a change to allow for a hotter shower to be enjoyed.
  • Check the temperature of your water heater to make sure it does not reach 120 degrees Fahrenheit (F).
  • If the temperature on your heater is set to a higher level, follow the instructions for your hot water system to adjust the temperature on your heater.

Damaged Pressure Relief Valve

  • It is possible for hot steam to build up inside the water heater tank if the pressure release valve is broken or fails. The heated steam will cause the water to become even hotter. You can tell whether a pressure relief valve is malfunctioning by looking for any of the following symptoms: Whistling sounds
  • a leak at the pressure relief valve
  • issues with the water pressure

Mineral Sediment Buildup

  • It is possible that sediment buildup will form in your water heater tank, obstructing the heating components and causing them to work too hard, causing the water in your water heater to overheat.
  • When you hear a popping noise coming from your water heater, this indicates that you have mineral sediment accumulation in your system.
  • Consider investing in a water softener to help avoid silt accumulation.

How to Fix a Water Heater That Is Too Hot Or Overheating 

According to the origin of the problem and the kind of water heater in your home, there are several possible solutions to scorching hot water temperatures. Use these procedures to bring very hot water temps down to a reasonable level.

Gas Water Heater Too Hot: Steps to Fix

The water in the tank of your gas water heater is heated by means of a burner. When the thermostat comes into touch with water that is colder than the temperature setting, the burner is activated to provide heat. When something interferes with this process, you may notice that the water temperature is elevated. When your gas water heater becomes too hot, use these steps to cool it down:

  1. Set Temperature

Locate the gas shutoff valve. There will also be a dial for adjusting the temperature on this. Check to be that the unit is set to the temperature you want it to be.

  1. Flush Water Heater

When you flush your water heater, you are removing the silt that has accumulated around the heating element. It is necessary to flush the water heater tank once it has been drained and then filled again with water. Continually repeat the process until there is no longer any silt visible in the water.

  1. Replace Damaged Components

Due to a malfunctioning component, the temperature of the water might occasionally become too high. The thermostat, heating element, and pressure relief valve are the three components that might potentially be the source of the problem.

Electric Water Heater is Too Hot: How to Remedy

The heating components in your electric water heater are activated by an electric burner in your water heater. First and foremost, cut off all power to the equipment before examining it as a safety measure before proceeding with the assessment. When your electric water heater creates water at too high temperatures, follow these procedures to address the issue.

  1. Set Temperature

The temperature control on your typical electric water heater is located behind the access panel, and you will need to locate it in order to adjust the temperature. Controlling the temperature can be accomplished through the use of a dial or a digital control panel. Keep an eye on the temperature and adjust it if required.

  1. Test Thermostat

Check the thermostats on your water heater to make sure they are working properly. You should keep in mind that the majority of residential water heaters have a dual-heating system, which means that you will need to test both thermostats.

  1. Reset Water Heater

A defective thermostat is at the root of many problems with electric water heaters. The red reset button on your equipment should be located, and you should press it to see whether it cures the problem.

  1. Replace Faulty Thermostat

Alternatively, if resetting the thermostat does not address the problem, you will need to replace the defective thermostat. For detailed instructions on how to simply repair the malfunctioning thermostat, see the video below.

Tankless Water Heater is Too Hot: What to Do

Tankless water heaters provide instantaneous hot water rather than holding hot water in a tank as traditional water heaters do. When the water becomes too hot, you should try the tankless water heater troubleshooting techniques listed below to get a more comfortable hot water temperature.

  1. Set Temperature
  • Tankless water heaters are typically equipped with a digital control panel, which makes adjusting the temperature a simple process.
  • If the temperature is set too high, check the digital temperature display and adjust it to the appropriate setting.
  • The temperature setting of certain tankless water heaters may even be controlled through an app on your smartphone, which makes them very convenient.
  • You should consult the owner’s handbook if you see a diagnostic code on the display.

It will explain what it implies.

  1. Tighten/Replace Temperature Sensors
  • The sensors inform the thermostat when it should start generating heat.
  • If the sensors and the thermostat do not communicate effectively, this might result in excessively high water temperatures.
  • Identifying and tightening the temperature sensors may be necessary if the water continues to be too hot after you have adjusted the temperature.
  • If tightening the sensors does not work to correct the problem, you should consider replacing them.

If you’re conducting maintenance on your vehicle, it’s a good idea to check them frequently.

  1. Wash Inlet Filter

The inlet filter on your water heater, which is positioned near the cold water supply, should be cleaned once a year. This device protects your uint from scaling, however it will not function correctly if it becomes clogged with dirt. When you flush the water heater, you may clean it by running it under a faucet or wiping it with a cotton swab.

Quick-Read FAQs For Too Hot Water Heater

Why is my hot water getting too hot?

  • The following are the primary reasons why your home’s hot water becomes too hot: incorrect water heater settings
  • sediment accumulation on the heating element
  • a damaged pressure release valve

How do you know if your hot water heater is overheating?

Examine the temperature setting on your water heater to see whether or not it is overheating. You may also use a thermometer at the hot water faucet to check the temperature. Any temperature more than 120°F should be reduced.

What happens if a hot water heater overheats?

  • If your hot water heater overheats, you may have skin burns, decreased efficiency levels, and an increase in the deterioration of your water heater’s performance.
  • It is possible that an explosion will occur as a result of a broken pressure release valve.
  • Keep an eye out for the warning indications of unexpectedly hot water and other problems to prevent this unusual but very catastrophic situation……………………..

What do I do if my water is too hot?

If your hot water heater is producing water at extremely high temperatures, you should adjust the setting, cleanse the device, and replace any damaged components as soon as possible. Take note that different unit types may have slightly different procedures, so keep this in mind.

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The Dangers of an Overheating Water Heater and What to Do About It

  • Traditional water heaters include a tank that keeps a steady supply of hot water that is ready to be used in a variety of applications.
  • If the water suddenly becomes excessively hot, it might be as a consequence of one of these frequent problems, which can be resolved with routine maintenance or a rapid repair.
  • In any home, having access to hot water is a must.
  • You should be aware that if you turn on the hot water tap and are greeted with a blast of boiling, scorching hot water, this may indicate that there is a problem with the water heater.

Although you can perform some troubleshooting on your own, calling a professional for water heater repair in Las Vegas will assist to guarantee that no one is hurt as a result of the extremely hot water.


  • It is the most typical cause of overheating water as it comes out of your faucet when there is an issue with the thermostat.
  • It’s possible that someone made an unintentional adjustment or bumped the thermostat.
  • If it is a digital thermostat, it is possible that it has lost power or that it has reset itself.
  • If you attempt to reset the thermostat to 120 degrees Fahrenheit and it does not react, contact your plumber to have the thermostat replaced.

Dirty Heating Element

  • Water heaters have a heating element that heats the water they are heating.
  • Minerals present in the water may accumulate on the surface of the element.
  • When this occurs, the element is in risk of overheating.
  • Due to the high temperature of the water in the tank, the water that comes out of the faucet will be extremely hot.

The majority of components will fail totally within a short period of time after being overheated in this manner.Unclogging the overheated tank and replacing a broken element are both possible tasks for a plumber.

Damaged Pressure-Relief Valve

  • A pressure-relief valve that is jammed or damaged prevents steam and excess heat from escaping from the water reservoir.
  • The heat is retained within the tank and can get quite hot, to the point that the water begins to boil.
  • Because of the high temperature of the water and the possibility of the valve blowing, this may be quite dangerous.
  • A plumber can replace the pressure-relief valve in a safe and efficient manner.

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3 Reasons Your Electric Water Heater Might Be Overheating

  • Those of you who have ever had a sudden cold shower will appreciate the significance of a well functioning water heating system.
  • Electric water heater problems, on the other hand, might be more than simply inconvenient.
  • They might also pose a major threat to one’s health.
  • Overheating is one of the most hazardous problems that may occur with electric water heaters, and it can be quite harmful.

Individuals in your home may be burned if there is an overheating situation in your home.Furthermore, overheating can cause irreversible damage to the water heater, resulting in the need to repair or replace the device at a cost to you.The good news is that there are a few warning indicators to look out for that may help you prevent or catch an overheated water heater before it becomes a significant problem.

3 common your electric water heater might be overheating

1. Too much pressure

  • The failure of your pressure release valve to operate correctly might result in severe consequences for you.
  • In the event that the tank of your electric water heater bursts, the steam that has built up inside the tank might inflict serious injury.
  • Please contact a qualified plumber as soon as possible if you discover evidence of boiling water within the tank.
  • You should also switch off the electricity to the electric water heater.

2. High temperature

We recommend that you keep the thermostat in your hot water tank set to 120oF, however it is possible that the settings will be altered and the temperature set too high. In many cases, checking the thermostat is a good place to start when troubleshooting an overheating problem. If you see that the temperature is set higher than 120 degrees, try lowering it to resolve the problem.

See also:  How To Install A Gas Hot Water Heater

3. Sediment buildup

  • The heating components in your electric water heater are susceptible to silt accumulation, which can occur either at the bottom of the tank or around the heating elements in your electric water heater.
  • When this occurs, the water heater is forced to work harder, which increases the risk of overheating the water.
  • If this occurs, it may result in the failure of the heating elements within the unit, which might result in a costly repair.

Water heater installation and repair

  • If you are experiencing problems with your water heater overheating or failing to perform correctly, don’t put off finding a solution. By contacting Rick’s Plumbing, you may avoid costly damages and potential risks. Our certified plumbers in New Haven and Fairfield County are experienced in troubleshooting and repairing all sorts of electric water heater problems. To make an appointment, call (203) 874-6629 right away. Published on August 20, 2020, in the category of Water Heaters, with no comments.

Signs Your Water Heater is On It’s Last Leg

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Signs Your Water Heater is On It’s Last Leg

  • One of the most important items in your home is likely to be your hot water heater.
  • The water heater not only delivers hot water on demand for showers and baths, but it also supplies hot water for your other household appliances such as the washing machine and dishwasher.
  • You will begin to notice symptoms of wear and tear as soon as your hot water tank ceases to function.
  • Some warning indicators that your hot water tank is about to fail are as follows:

Decreased water temperature

If you enjoy a hot shower first thing in the morning, you’ll notice a decrease in the temperature. When the temperature drops, it shows that the heating components are not working correctly. A qualified plumber may do an inspection of the heating elements to ensure that they are in perfect working order.

Discolored water

The presence of rust colored or brown water streaming from your faucet when you turn it on might be an indicator that your water tank is malfunctioning. When a water tank begins to fail, the most typical cause is a build-up of sediment in the tank, which over time will harm the interior of the tank, and it is this sediment that is responsible for the water turning colors.

Water leaks around the tank

You should be aware that if you detect water leaking from the tank’s base, it is likely that silt has accumulated at the bottom and over time has caused damage to the interior tank. This sediment buildup can result in corrosion, which can result in the leaks you notice on your floor as a result of the sediment buildup.

A noisy water heater

Hot water heaters are generally quite quiet, so if you notice any unusual noises coming from your hot water tank, it may be an indication that you need to get it repaired or replaced in the near future.

Your tank is getting old

  • By glancing at the serial number on the bottom of your water tank, you can determine how old it is.
  • The usual lifespan of a hot water tank is 7-10 years, which corresponds to the time period during which these sorts of problems may manifest themselves.
  • The installation of a new water tank by professionals may be necessary in the case of an outdated water tank.
  • If you see any of these indicators, contact the professionals at Atlas Butler, who specialize in hot water tank repair.

Our specialists can inspect your hot water tank and determine whether or not the old unit can be fixed, or whether it is more cost-effective to replace the hot water tank.In order to schedule an appointment with Atlas Butler, Central Ohio’s best HVAC and plumbing business, please fill out our online appointment request form or contact our staff at 614-681-2183.

When to Replace a Water Heater

There is a possibility that you can fix your current water heater if it is leaking or not heating up properly. When the time comes, learn how to recognize the indicators that your water heater has to be replaced completely.

How Long Do Water Heaters Last?

  • According to the manufacturer’s recommended service life, the life expectancy of a water heater is between eight and twelve years on average.
  • That varies depending on the unit’s location and design, the quality of the installation, the maintenance schedule, and the quality of the water.
  • Generally speaking, if your water heater is more than 10 years old, if it leaks at the base of the tank, or if it operates irregularly, it’s time to consider replacing it.
  • You may also decide to switch to a more energy-efficient model in order to reduce your energy costs.

Repairs and troubleshooting may be necessary to save your current water heater in some instances.Before you begin looking for a replacement, check to see whether an electrical problem, such as a blown fuse or a tripped breaker, is the source of the unit’s failure.It is important to do regular maintenance on your water heater in order to maintain the life of the equipment, and certain repairs, such as replacing a pressure relief valve or heating element, are quite straightforward.

Troubleshooting Common Issues

One of the most typical issues that arises with a water heater is that the water does not heat up as quickly as you would like it to. Most of the time, this is caused by a malfunctioning thermostat or a faulty heating element. When your water isn’t hot enough, have a look at the following.

Electric Water Heater

  • Check to see that the electricity is connected and that the thermostat has been reset.
  • Flush the heater to remove any sediment that has accumulated in the tank.
  • Ensure that the hot water lines are properly insulated.
  • Replacing the heating element or thermostat is a good idea.
  • The thermostat’s temperature setting should be increased.

Gas Water Heater

  • Check to see that the gas is turned on and that the pilot light is lighted.
  • Flush the heater to remove any sediment that has accumulated in the tank.
  • Ensure that the hot water lines are properly insulated.
  • Clean the gas burner and repair the thermocoupler (a safety mechanism that automatically turns off the gas when the pilot flame goes out)
  • The thermostat’s temperature setting should be increased.

Other Common Problems and Possible Solutions

  • If you hear hissing or sizzling noises, it’s possible that sediment has accumulated in the tank. Drain the tank until all of the water has been removed. Remove the components from the oven and place them in a pan filled with white vinegar for up to an hour, scraping off any scale that has accumulated.
  • If the Pressure Relief Valve is leaking, it should be replaced.
  • Water Supply Pipes That Are Leaking: Tighten the fittings. The water should be turned off and the fittings replaced if that doesn’t work.

Water Heater Maintenance

  • Although today’s water heaters are designed to require little or no care, following these maintenance guidelines may help you extend the life of your water heater. For additional information on water heater care, see How to Maintain a Water Heater. Drain the water heater twice a year to get rid of the silt that has accumulated and is causing corrosion. This also improves the performance of the pressure relief valve. To test the pressure relief valve, raise the handle and allow it to snap back. Upon doing so, a burst of water should be released into the overflow drainpipe. Alternatively, replace the valve with a new one and reduce the temperature setting on the thermostat to 120 degrees Fahrenheit. Overheating can cause damage to the tank, thus this helps to prevent it from happening.

When Replacement Is Necessary

  • If you’re replacing a water heater, you can use the same sort of device as the one you’re replacing. However, you might want to think about upgrading to a larger tank or a tankless heater if you can. When shopping for a water heater, keep the following qualities in mind: Heaters with a capacity of 40-gallon or 50-gallon are the most commonly encountered
  • In gallons per hour, the recovery rate refers to the number of gallons heated by the heater.
  • In terms of dimensions, depending on where you intend to put the unit in your home, you may require a specific width and height
  • Ratings for energy efficiency: A label on the side of the unit shall display the projected yearly cost of operating the unit in dollars. Models with high energy efficiency can help you save money and energy.
  • In order to determine if you need to make repairs or purchase a new water heater, look at the nameplate on the side of your present unit. You’ll discover useful information like as the tank capacity, insulation R-value, installation instructions, working pressure, model, and serial number in this section. It is also possible to get information on your electric water heater’s wattage capacity and voltage on the nameplate of the heater itself. If you need replacement components or a new water heater, you may use this information as a starting point in your search for them. In order to assist you in selecting a water heater, please see our Water Heater Buying Guide. You should also consider the following considerations in order to assess whether or not you wish to undertake water heater installation yourself: What plan do you have for getting rid of your old water heater? Check your local codes to see how such equipment should be disposed of.
  • Will you be able to manage the device on your own physical terms? Water heaters are large and hefty appliances. You’ll want assistance
  • do you possess the essential equipment to complete the task? Water heater installation necessitates the use of adjustable wrenches, screwdrivers, a hack saw, and pliers among other tools. If you’re installing copper piping, you may also require a propane torch. Do you have the necessary time to complete the job? Once you begin the process of replacing a water heater, you must see it through to completion.

Please see our articles on How to Install an Electric Water Heater and How to Install a Gas Water Heater for further information on how to replace a water heater in greater depth.

Why Does My Hot Water Run Out So Quickly?

  • You’re probably familiar with the situation. When you wake up in the morning and turn on the shower, the water is bone-chillingly cold. As you stand there shivering in the cold, waiting for it to heat up, it feels like it will never happen. Maybe you’re the only one experiencing this. For example, you may be the last in line and the rest of your family has already taken a good hot shower, but when you switch on the hot water faucet, you discover that the water is ice cold. Neither of these scenarios is considered typical. As soon as you turn on your hot water heater and adjust your hot water tap, you should have wonderful warm water to drink. If your hot water heater is operating properly and holding enough water for everyone, you should have pleasant warm water as soon as you switch on and adjust your hot water tap. So, what is it about your hot water that makes it run out so quickly? This is a very evident problem. However, it is possible that your family has grown in more ways than one, and that your family has matured as a result of these changes. Your water tank is being depleted more quickly as a result of an increase in the number of individuals using hot water or the number of people having longer showers or baths. As a result, it is possible that you may require a bigger tank. Another typical issue is placing an excessive amount of demand on the hot water at the same time. This might include everything from running a dishwasher or a load of laundry while someone is in the shower to two people attempting to take a shower in different showers at the same time, and anything in between. You could also come upon the opposite problem. You’re in the shower when you’re scalded by a hot water stream. This can occur when someone turns on the cold water while you are in the shower, or when someone flushes the toilet while you are in the shower. The simple approach is to avoid placing an excessive amount of demand on your hot water at the same time. Although this might be difficult in a large house, it can be done in a coordinated manner to be effective. Otherwise, shower takers should use caution! Prepare to get chilled to the bone! It’s possible that your water heater is simply set at the incorrect temperature. Ideally, you should have your thermostat set at a temperature between 120 and 140 degrees Fahrenheit. If the temperature is below 120 degrees, simply increase the heat. Just be careful not to set it too high, as this might cause major scalding to another person. If you have little children, picking a comfortable 125 will help to decrease the chance of burns. If temperature problems have only recently occurred, it is possible that a dip tube has failed. Small pieces of plastic that may be found in your shower head, drain strainers, or appliance filter screens may be used to determine whether this is the case and should be avoided. If you do discover plastic fragments, it is likely that your water heater’s dip tube has been broken. Its purpose is to circulate cold water to the bottom of the tank, where it may be heated. When it breaks, the cold water remains at the top, causing it to flow out the hot water side rather than the cold water side. As an added bonus, because it isn’t heated from below, it remains cool. If this is the case, consult with a specialist to determine the source of the problem and to replace the dip tube. Another issue that might cause hot water to become ineffective is silt buildup in the water storage tank. This occurs over time as your water heater becomes less efficient. A system flushing of your water heater on a yearly basis may have been neglected, and this might be the source of the problem. Sediment is made up of loose minerals that occur naturally in water and combine to form a solid mass. It causes your tank to run out of hot water more rapidly when they settle in the bottom of the tank, which is caused by sediment. Sediment can be made up of items like sand, silt, or rust, all of which take up valuable space in your water tank. As a result, your hot water supply becomes increasingly limited. An further difficulty with sediment is that your heat

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