Where To Set Water Heater Temperature?

What Is The BEST Water Heater Temperature Setting?

Please keep in mind that this content may contain affiliate links.This means that, at no additional cost to you, we may gain a small profit on purchases made via our links.In the event that you have already adjusted the temperature and are complaining to yourself that you ″have no hot water″ or ″don’t have enough hot water,″ there are a few reasons that might be impacting the heat.

If all else fails, it’s possible that the heating element is faulty and has to be replaced.

How To Check Your Water Heater Temperature

The majority of water heaters do not have a temperature gauge with a digital readout on them.A temperature or heating range is marked on the thermostat, rather than a number.A cup and a culinary thermometer will be required in order to correctly determine the temperature of the hot water heater.

If you haven’t used your water heater in at least one hour, turn on the faucet that is nearest to it.Allow the water to run for at least one minute to ensure that the water is at its warmest possible temperature before filling the cup with it.Insert your cooking thermometer and make any necessary adjustments to the temperature settings.

Recommended Temperature Settings

Water heaters are pre-programmed to operate at temperatures about 140 degrees Fahrenheit, which is recommended by OSHA.The Environmental Protection Agency, on the other hand, recommends lowering the thermostat down to 120 degrees Fahrenheit to save power use and using a booster heater to attain sanitizing temperatures at certain outlets.Another point of view is that lower temperatures are preferable for homes with little children, although higher temperatures are more effective in cleaning and sanitizing surfaces.

Recommendation from me Personally, I feel that the temperature of a water heater should be set around 130 degrees in practically all circumstances.However, the temperature is low enough to avoid scorching while being high enough to destroy hazardous microorganisms.

How To Turn Up Your Water Heater

If you are dissatisfied with the suggested temperature of your hot water heater, you may alter the settings to receive extra hot water.Although electric water heaters may require a screwdriver and potentially a tiny wrench or socket, most hot water heater settings are straightforward to modify.Keep in mind that the thermostat is factory configured to a recommended temperature, and that altering the setting may increase the risk of significant burns from the appliance.

How to Set Temperature on a Gas Water Heater

  • The temperature of a gas water heater may be adjusted by turning the setting knob on the water heater. The majority of gas control valves have a knob with different designations on them, such as A-B-C. Control valves for gas water heaters may be labeled differently depending on the manufacturer. In the majority of circumstances, the following is what each label indicates: Temperatures range from 80-90 degrees
  • hot (or triangle sign) = 120 degrees
  • A = 130 degrees
  • B = 140 degrees
  • C = 150 degrees
  • Very Hot = 160 degrees

There is a ″Vacation″ setting that appears from time to time. This does not heat the water, but it does ensure that the pilot light remains lit.

How to Set Temperature on an Electric Water Heater

Turn off the circuit breaker if necessary. Remove the access panels from the room. Under the insulation, look for the thermostat adjustment screwhole. Adjust the thermostat control to the appropriate temperature by using a straight screwdriver to make the adjustment. After replacing the insulation and panels, the power should be restored. Here’s a good video that demonstrates the procedure:

Factors That Affect Water Temperature

Some of the things that may influence the temperature of your hot water include the distance between the water heater and the outlet, the way the pipes are built, and the quality of the heating element itself, among others.Because of the length of the pipe and the small bore size, it will take longer for the hot water to reach the opening.Additionally, pipes that run beneath or outside the residence may be exposed to freezing or freezing temperatures in the winter and summer.

If you have a big house, you may want to consider installing a hot water recirculation system, which may reduce the amount of time it takes to send hot water to all of the outlets in the house, as well as provide significant cost savings over time.If setting the thermostat does not result in the desired temperature, it is possible that the water heater element has to be replaced.Alternatively, if you don’t notice a difference in water temperature after changing the thermostat, it’s likely that you have a malfunctioning thermostat that has to be replaced.

What Temperature Should I Set My Water Heater At?

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Setting the Ideal Hot Water Heater Temperature

Are you tired of burning your hands every time you turn on the hot water in the shower?What if you’re having trouble getting a comfortable water temperature, no matter how high you turn the faucet up?These are not always indications that your water heater is malfunctioning, but rather that the temperature setting you have chosen is not optimal for your purposes.

A water heater that has been installed incorrectly can have a significant influence on your life, even in areas that are not directly linked to your plumbing or heating system.In the case of a water heater, which consumes around 18 percent of the energy in your house, changing it by just 10 degrees can result in a three to five percent reduction in your monthly energy bill.It can also have a negative influence on your health or the health of people who share your home with you.

How do you set your thermostat when there is so much riding on the outcome?A definitive or simple response cannot be given; rather, part of it is a matter of personal choice.But there are a few guidelines you may follow to ensure that your temperature setting is optimal for you.

General Recommended Water Heater Temperature

You can find out what temperature water should be at by visiting the Environmental Protection Agency.The optimum temperature is 120 degrees Fahrenheit.You will really save money because your water will not be hot enough to cause scalding, most small households will have adequate hot water for their needs, and reheating will not need an excessive amount of energy consumption, allowing you to save money on your utility bills.

This temperature, on the other hand, is not ideal for everyone.Some homes will require it to be even hotter than this for a variety of reasons that we shall address shortly, but exercise caution when exceeding this temperature threshold.

Considerations When Choosing a Water Heater Temperature Setting

Do you have any at-risk individuals residing in your home?Those who are particularly sensitive to high temperatures may suffer serious consequences if they are exposed to overly hot water.It only takes two seconds of exposure to water at 150 degrees Fahrenheit to create third-degree burns in small neonates, and only five seconds at 140 degrees to cause third-degree burns.

Temperature reduction is more safer for your infant and far more cost-effective in terms of energy use.A water heater set at no more than 130 degrees is recommended if you have a baby or any youngster under the age of three in your household.Elderly homeowners should follow the same guidelines and laws as everyone else, because they are also at risk of burning quickly and suffering potentially painful injuries if they are accidentally exposed to too hot water.

Those who have compromised immune systems or who suffer from respiratory ailments, on the other hand, may benefit from a hotter water temperature in order to destroy bacteria while also increasing the concentration of steam in the air when bathing.When dealing with these people, and assuming there are no smaller children around, we recommend keeping the water temperature no higher than 140 degrees.Do you have an appliance that is energy efficient?Dishwashers that pre-heat are becoming increasingly common.

  • Essentially, these systems take in water and then raise the temperature to even higher levels to provide an even better and more hygienic clean, all without the need for you to raise the temperature coming from your water heater.
  • When it comes time to update or replace your dishwasher, we strongly advise you to search for one that has a pre-heat system built into it.
  • If, on the other hand, it won’t be for a long time, you may wish to raise the temperature of your water heater to 140 degrees.

It is possible to maintain the water nice and hot for your dishwasher while still keeping it safe to use for the majority of your family members if you use enough cold water to compensate for the hot water.How many people do you have living in your house?While everyone has their own temperature preferences while bathing, you can typically fine-tune them with the hot and cold water knobs on the shower head.Those who like a hotter shower increase the ratio of hot to cold water in their shower.Showers that are chilly to the touch are preferred by those who prefer them that way.The temperature of the water that comes out of your water heater, on the other hand, will have an impact on this as well.

The hotter the water that comes out of your heater, the less hot water individuals will require, and the more cold water they will need, to attain their preferred temperature.People that use cooler water heaters will require more hot water and less cold water in order to achieve their goals.As a result, people who adjust their water temperature to a lower setting will find themselves running out of hot water more quickly.

If you have a large home with multiple people living in it, you should raise the temperature of the water to ensure that your hot water supply lasts as long as possible.Smaller homes with fewer occupants may get away with setting the thermostat lower since they are less likely to run out of heat in the first place.Do you require assistance with your water heater in the Los Angeles area?The specialists at Moe Plumbing Services can help you with everything from thermostat replacement to new water heater installation.Call (818) 396-8002 today to schedule an appointment.

More on Water Heaters:

  • Six Common Problems with Your Home Water Heater
  • What Every Homeowner Should Know About Water Heater Maintenance
  • Six Common Problems with Your Home Water Heater

How to adjust your water heater temperature

No one enjoys taking a cold shower.Even worse is being scalded by hot water when you are using it in the shower.Maintaining the proper temperature on your water heater is vital not just for your health and safety, but it also allows you to save money on your power bill.

Here’s how to regulate the temperature of your water heater to save money while also protecting your skin from sun damage.

The correct temperature range

    There are a number of reasons your water heater should be set within a specific range of temperatures. If it’s set too low, not only will your hot water feel lukewarm, at best, it can also lead to bacterial growth which can cause things like Legionnaires’ disease. This can be prevented by setting the water heater to a temperature where the bacteria Legionella cannot thrive. The Occupational Safety & Health Administration (OSHA) recommends water heaters be set to at least 140 degrees Fahrenheit (60 degrees Celsius) to minimize the growth of Legionella and other microorganisms.While you might be prone to just crank up the heat, water that is too hot is potentially more dangerous, especially if you have kids around the house. At 150 degrees Fahrenheit (66 degrees Celsius), it only takes two seconds to suffer third-degree burns. The Consumer Product Safety Commission (CPSC) recommends setting the water heater at no more than 120 degrees Fahrenheit (49 degrees Celsius) to prevent scalding. Not to mention, a water heater that is set too high can unnecessarily increase your electricity bill. Of course, every house is different. The further a faucet is from the water heater, the more heat will be lost as the water travels, especially if the pipes aren’t insulated. That means you might have to raise the temperature beyond the recommended 120 degrees Fahrenheit (49 degrees Celsius) to compensate.Use your best judgement for your family and household when setting thetemperature. It’s smart to stay within the range of 120 to 140 degreesFahrenheit (49 to 60 degrees Celsius). Make an adjustment, test it out and repeat until you settle on the perfect temperature setting for you home and water heater. Now playing: Watch this: Step inside CNET’s Guide to Smart Living 1:00

Adjusting water heater temperature

The interface used to control the temperature of a water heater will differ depending on the kind and model.Fortunately, the majority of water heater models can be modified in the same way.For example, most contemporary gas and electric water heaters are equipped with a thermostat concealed behind an insulated access panel.

Electric water heaters are frequently equipped with two thermostats: one at the top of the tank and another at the bottom.Furthermore, most tankless water heaters include a display with a temperature reading as well as controls for altering the water heater’s temperature.Regardless of the sort of water heater you have, you should always test the water before making any changes to it.

Turn on the water in the bathroom or kitchen sink and let it to run until the water is completely hot before using.Then, to get an accurate reading, place a thermometer beneath the surface of the water.


The process of adjusting a tankless water heater is quite similar to the process of adjusting your air conditioning thermostat. Adjust the temperature by using the digital control panel, which may be adjusted up or down as desired.

Gas or electric water heaters

  • Some gas water heaters include a dial towards the bottom of the device that may be adjusted simply by turning it – no tools are required for this operation. Nonetheless, most current tank water heaters (whether gas or electric) require a bit more effort, but the process is still straightforward and should only take a few minutes. Turning off the water heater’s electricity at the circuit breaker is the first step.
  • To remove a thermostat(s), locate the access panel for the thermostat(s) and remove it using a screwdriver
  • Remove the insulation by peeling it back.
  • To adjust the thermostat, use a flathead screwdriver to turn it up or down. If your water heater has two thermostats, make sure they are both set to the same temperature. The temperature on the top thermostat should be a few degrees higher than on the bottom thermostat.
  • Replace the insulation and re-install the access panel, if necessary.
  • Reconnect the water heater’s power supply
  • It is possible that you may need to relight the pilot light on a gas water heater.
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Once you’ve made the necessary adjustments, you should wait at least three hours before checking the water temperature once more.It is possible that you may need to make more modifications in order to get the desired temperature.If you’ve increased the temperature and are still getting chilly showers, it’s possible that your hot water heater has to be serviced or completely replaced.

Is the energy efficiency of your home high?Here are five different methods to find out.CNET’s Guide to Smart Living is a one-stop shop for tips, techniques, and guidelines to help you live a more intelligent life.

How to Set How Water Heater Temperature by Thermostat

You might be wondering how to adjust the temperature of your hot water heater. In this section, you will learn all you need to know about your gas or electric water heater thermostat, including how to adjust your hot water heater temperature thermostat and what temperature is optimum for hot water.

What’s the Right Temperature for a Hot Water Heater?

It’s an often asked question: what is the optimal temperature for hot water?Setting a tank-based hot water heater to 120 degrees Fahrenheit is recommended by the United States Department of Energy.If you have never changed the temperature of your hot water heater, it is most likely set to the 140-degree Fahrenheit level that is recommended by most manufacturers of hot water heaters.

What is the significance of adhering to this temperature standard?If the water heater thermostat setting is set to an excessively high temperature, the water will be too hot and might cause burning or scorching.If it is set too low, germs may be able to flourish, leading to the spread of water-borne illnesses.

How to Set Your Hot Water Heater Temperature Thermostat Setting

Before you make any modifications to the temperature thermostat setting on your hot water heater, you should first ascertain what the current temperature is set at so that you can establish how much you need to alter the settings.A conventional cooking thermometer may be used to quickly and accurately detect the temperature.You should calibrate your thermometer once you have determined the current temperature setting.

Fill a cup halfway with cold water and submerge your thermometer until the temperature dial reaches 32 degrees, or the lowest temperature displayed on your thermometer’s gauge, and then remove it.By calibrating the thermometer, you are effectively resetting it so that you will be able to acquire an accurate temperature measurement in future.Meanwhile, locate the faucet that is closest to the water heater and turn it on until it is hot (while you are calibrating your thermometer).

Precautions must be taken!If your thermostat is set too high, the temperature may be high enough to burn you.Once the water is hot, fill a cup halfway with it and take the temperature with a thermometer by inserting it in the water.

Adjusting a Gas Hot Water Heater Temperature Thermostat Setting

The majority of gas water heaters are straightforward due to the presence of a clearly readable dial at the bottom of the tank’s bottom section. If you follow the methods outlined below, it is simple and straightforward to alter this dial.

  1. First, adjust the temperature by turning the knob to the hotter or cooler position, depending on the situation.
  2. After that, let it sit for a few hours (around three or four) and then check the temperature again.
  3. If the temperature is still incorrect, make another adjustment and repeat the process until the problem is resolved. Do you require assistance? Give Hackler Plumbing a call if you want the services of a McKinney plumber, and we will be happy to assist you

Adjusting an Electric Hot Water Heater Temperature Thermostat Setting

The process of adjusting the temperature thermostat setting on an electric hot water heater is a little more difficult, but still pretty simple.The vast majority of electric water heaters are equipped with two thermostats: an upper and a lower thermostat, both of which are placed beneath two control panels.Setting both thermostats to the same temperature can help to guarantee that your electric water heater operates as effectively as possible.

One thing to keep in mind is that some tiny electric hot water heaters only have one thermostat.

Here’s how to adjust the temperature on your electric hot water heater thermostat:

Please keep in mind that you will want a screwdriver to execute the following procedures in order to alter the temperature of your water heater.

  1. Make sure your water heater is off by turning off the electricity. This may be accomplished by locating your circuit breaker and shutting off the electricity in the area surrounding your water heater
  2. Then, locate the thermostat(s) on your water heater and turn them on. Typically, they are located behind a control panel that is secured with screws. Remove the cover from the access panel using your screwdriver (s). To access the thermostat, you may need to remove the insulation from your heater if it is properly insulated. The thermostats will be controlled by a dial, and the dials will have a varying reading depending on the manufacturer of the heater.
  3. Once the control panel has been removed, you may change the temperature knobs to make the room hotter or colder according on your preferences in terms of temperature. Take care to set both thermostats to the same temperature setting if you have more than one.
  4. Replace the control panel covers and the screws with your screwdriver after they have been removed. After that, re-energize your water heater’s electrical system.
  5. After a few hours, check the temperature of your hot water again (about three to four). Continue to follow the above instructions until the water temperature reaches the required setting
  6. if it still does not, repeat them until the temperature reaches the ideal setting for your needs.

Other Considerations: Water Heater Thermostat Setting Safety

There is one thing you should be aware of: your water heater is fitted with something known as a temperature and pressure relief valve, sometimes known as a ″T&P valve.″ These can become worn out over time, and one sign that they should be replaced is the presence of water leaking through.This is a very crucial safety feature.In the event that your unit is outdated or if your hot water heater pressure relief valve leaks after being replaced, get it examined by a competent plumber.

How to Adjust Your Water Heater Temperature in 6 Simple Steps

Do you have a habit of changing the temperature of your electric water heater on a frequent basis?If this is the case, you may find it difficult at first.Water temperature has a huge impact on the quality of our domestic water supply.

In order to prevent bacterial penetration, a water heater should not be too cold and should not be too hot in order to provide scorching hot tap water.We must alter the temperature of the hot water heater to satisfy various home water activities that necessitate varied thermal settings.In this article, I will go through the DIY supplies you will need, as well as the many methods of adjusting the temperature of your water heater, in great detail.

Let’s get this party started!

What Will You Need in This Tutorial

  • Before you increase the temperature of the water in your electric water heater, you should be aware of the fundamental safety requirements to ensure the safety of your family. Because of the increased danger of developing Legionella Disease, the Occupational Safety and Health Administration (OSHA) strongly suggests that we keep our water heater at 140 degrees Fahrenheit. In contrast, the Centers for Disease Control and Prevention (CDC) and the United States Environmental Protection Agency (EPA) recommend that households keep their water heater tank at 120 degrees Fahrenheit or lower at all times. Its purpose is to avoid scalding from domestic hot water and to minimize energy usage. The general view among specialists is that you should lower the temperature of your water heater to a safe and comfortable level of heat. It is recommended that you keep your water heater temperature between 130 and 140 degrees Fahrenheit, depending on your choice and hot water requirements. Keeping your water heater at 120 degrees Fahrenheit is the greatest option if you have little children in the house. Alternative options include adjusting the temperature as needed (as long as you do not go lower or higher than the settings recommended by an expert). You are one step closer to completing this chore now that you have a greater knowledge of the significance of keeping an appropriate water heater temperature. To correctly modify the temperature of an electric water heater, you’ll need the following tools: Screwdrivers with a Phillips head and a flat head — These are the two most common screw heads found on most household appliances. To unlock the cover plate of an electric water heater, which contains the thermostat, you’ll need a 0 Phillips screwdriver.
  • Electrical Safety Gloves – You will need one pair of electrical-insulating gloves since they are made of dielectric material, which will protect you from electric shocks when working with electricity.

It’s important to remember that electrical heating components become more prone to malfunction over time. In order to protect your hands against electrocution, it is recommended that you wear hand protection gloves.

Multifunction Kitchen Thermometer – There are several varieties of thermometers available for a variety of applications. As a result, you should choose a product that can be used in hot water.

Generally speaking, a normal digital multifunctional kitchen thermometer will do for most applications. However, if you don’t already have a kitchen thermometer, I would recommend investing in an instant-read digital thermometer (if you don’t already have one). This thermometer lives up to its name. Within a few seconds, it can provide a precise level of heat to a specific area.

Cup or jug – You have the option of using a jug or a cup. Both of these containers may be used as hot water storage containers. Despite this, I prefer using a jug rather than a cup since it has a wider, deeper body that can contain and keep hot water more securely than a cup.

Step By Step Instructions

Step 1: Check the current temperature of your water heater.

  • As previously noted, we set the temperature management of our electric water heaters in accordance with our household’s requirements and situations. First and foremost, we must check the temperature of our water heater to confirm that it is capable of meeting our hot water requirements. After you’ve prepared the jug, turn on the hot water tap closest to you.
  • Fill the jug halfway with boiling water to conduct the test
  • Then, submerge the stem of your kitchen thermometer in the water and leave it there until the temperature begins to rise again

The temperature should be at least 120 degrees Fahrenheit on the thermometer. If the reading is not what you expected, you can now proceed to modify the temperature of the water heater. It’s a good idea to adjust the water heater temperature to 140 degrees Fahrenheit if you have an immunocompromised family member in the house.

Step 2: Switch off the power supply of your electric water heater.

  • Make sure you put on your safety gloves first, and then proceed to the main electrical service panel in your home and locate the circuit breaker that controls your water heater. It is normally labeled and operates at a current of around 30-50 amps. Ensure the circuit breaker is in the ″OFF″ position

Observe your water heater and listen for the ″hissing sound″ before disconnecting it from the power source. You will see this message if your unit is consuming electricity. Check to see whether you can still hear the sound after you have turned off the circuit breaker. If the power is turned off, you will not be able to hear it anymore.

Step 3: Remove the faceplate of your water heater to access the thermostat.

  • Most dual-element electric water heaters have two thermostats and two heating elements, which is common practice. The higher thermostat and the lower thermostat are located within the panels that are mounted on the side of your water heater tank: the upper thermostat and the lower thermostat. Open the two thermostat screw-on covers with a Phillips screwdriver and remove the screw-on covers. It is important to store the screws in a safe location so that they do not go misplaced due to their small size.
  • When you lift the plate, you will notice an insulating pad below it.
  • Wear your gloves once again since the thermostat is surrounded by wires. Carefully peel back the insulation and lay it away since you will need to replace it later on.

Useful Hint: If you are unsure about where to find and how to access the two thermostats, consult the user’s handbook before proceeding to save time and energy.

Step 4: Adjust the temperature dial to your preferred setting.

You have now got complete access to your thermostats as a result of removing the insulation.The temperature dial is easily distinguishable.Look underneath the reset button for a spinning knob with a screw slot (typically white) and a screwdriver hole (the red one).

The majority of electric versions are equipped with a white triangle indication that points to the location of the temperature levels that have been designated.A flat head screwdriver may be used to change the temperature dial to the appropriate setting.It’s important to remember to set both thermostats at the same temperature.

Step 5: Reassemble the access covers.

Replace the insulation in its original location and put the metal plates back into place using the screws you removed previously.

Step 6: Restore the electric supply to your water heater and test the water temperature.

  • Then, return the circuit breaker to the ″ON″ position on your water heater. Don’t forget to put on your protective gloves once more. Wait three to four hours before using the hot water that has been adjusted
  • Reevaluate the temperature of the water. Repeat the first step of the method. Open the nearest hot faucet for a minute to relieve the pressure in the jug and fill it with a large amount of hot water.
  • Check the temperature with the help of a kitchen thermometer. If the temperature displayed on the dial corresponds to the temperature you specified, you are good to go. You may now take pleasure in a continuous supply of excellent hot water for your household

Alternatively, if the temperature is still not suitable, repeat steps 2-5 until the water is at the desired temperature for you.


The process of learning how to regulate the temperature of your water heater is as simple as turning on and off the lights, provided that you adhere to safety considerations.Always adhere to the recommended temperature set by water heater professionals.If your unit has unexpected temperature changes or other problems, don’t worry; instead, call a skilled plumber straight once for assistance.

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If you have any queries, please leave them in the comment box below!Thanks!

How to Adjust the Temperature on an Electric Water Heater?

You’re afraid the water will be too hot when you turn on your electric water heater for the first time, therefore you’re feeling nervous about it.This type of anxiety may be avoided by learning how to change the temperature on an electric water heater properly.The ability to adjust the temperature of a water heater not only ensures maximum comfort, but it may also result in greater safety and energy savings.

This article will walk you through the process of adjusting the temperature of your electric water heater to the desired setting in just eight simple steps.

Things You Need for This Tutorial

The procedure of adjusting the temperature of an electric water heater is uncomplicated and requires only a few simple supplies.

Water Heater Owner’s Manual

The pre-set temperature of the water heater is specified in the owner’s handbook.It comes in helpful when considering how much to modify the temperature or whether it is necessary to adjust the temperature at all.You will also be aware of the specific placement of the water heater’s thermostats, which will make it easier to remove the access panels, as well as how to alter the water heater’s temperature.

Kitchen Thermometer

As well as a thermometer, you’ll need one to check on the temperature of the hot water before and after the modifications. It will give you a general sense of how high or low you should set the temperature on your thermostat. There are several various types of kitchen thermometers, but I would recommend either a candy thermometer or an instant-read kitchen thermometer as your first choice.


Using this hand tool, you will be able to loosen and remove the bolts that are holding the thermostat access panels in place. Depending on the screw design, you can use either a flat-tipped or a Phillips screwdriver to complete the task.

A cup

Steps for Adjusting the Temperature on an Electric Water Heater

Step 1. Determine the water heater’s pre-set temperature.

  • A predefined temperature is always established by water heater manufacturers in their devices, which is based on the recommendations of federal authorities or well-respected nonprofit groups. On the one hand, some manufacturers adhere to the recommendations of the Occupational Safety and Health Administration (OHSA) and set their water heaters to a standard 140 degrees Fahrenheit
  • on the other hand, some manufacturers adhere to the recommendations of the Consumer Product Safety Commission and set their water heaters to 120 degrees Fahrenheit. As an energy-saving strategy, the Environmental Protection Agency of the United States promotes this temperature as well.

You should consult your water heater’s owner’s handbook before making any changes to the temperature control on your electric water heater if you are unclear of the temperature your water heater is set at.

Step 2. Determine the ideal water temperature for your household.

People’s views of and needs for hot water differ from one another.For example, because newborns, small children, and the elderly have thinner skin than adults, it is not recommended to use 140-degree hot water on them.If they use extremely hot water, these individuals are at risk of suffering burn damage.

Water temperatures below 120 degrees Fahrenheit, on the other hand, can encourage the growth and multiplication of Legionella and other waterborne pathogens, according to the CDC.People with impaired immune systems may not be able to fight off the illness that results as a result of the virus.A common setting for water heaters is 130 degrees Fahrenheit, which provides a good compromise between safety and comfort.

Step 3. Measure the water heater’s current water temperature.

It would be preferable if you could test the present water temperature in your home before making any changes to the temperature of your electric water heater.This provides you with a starting point from which to make temperature modifications.I propose turning off the electric water heater for at least an hour and refraining from using hot water until the temperature is reached properly.

Open the hot water faucet that is closest to the water heater and allow the water to flow for about a minute before filling a cup with hot water from the faucet.To test for doneness, dip the tip of an oven or cooking thermometer into the hot water and wait for the temperature to stabilize.Make a mental note of the temperature measurement.

To avoid forgetting the temperature measurement, you can also write it down on a piece of paper.If the water temperature is within your desired range, there is no need to adjust the temperature of your electric water heater.It is possible to proceed to the next step even if the temperature readout is different from the desired temperature.Advice from the experts: Submerge the thermometer in ice cold water to re-calibrate it to the lowest feasible temperature.

Step 4. Power off the electric water heater.

To be on the safe side, I recommend that you turn off the electricity that is feeding your water heater. The water heater switch at the circuit breaker panel can be turned off in order to accomplish this task. If you are unable to locate the water heater circuit breaker, I recommend that you turn off all circuit breakers.

Step 5. Access the water heater’s thermostats.

I recommend that you consult your owner’s handbook to see whether or not you have two thermostats.The majority of electric water heaters are equipped with two thermostats and two heating components.Each pair is equipped with an access panel that must be opened with a screwdriver.

Check to see whether the thermostat has an insulating covering that must be peeled away in order to gain access to the component.Keep an eye on the thermostat and avoid touching or moving any of the wires while you’re working with it.

Step 6. Adjust the water heater’s temperature setting.

If you have an electric water heater, look for a knob on the thermostat and turn it clockwise or counterclockwise depending on whether you want the water to be hotter or cooler. The temperature marks on most thermostat knobs serve as a guidance for making temperature changes. Change the temperature settings to suit your needs and desires. Make certain that both thermostats are adjusted.

Step 7. Replace the access panel.

Replace the insulation above the thermostat and fasten the access panel with screws to keep it in place. It is recommended by some plumbers to postpone this procedure until you are confident with the temperature of the water coming from your water heater.

Step 8. Evaluate the water temperature after several hours.

By resetting the circuit breaker on your water heater, you may re-establish electric power to it.It should only take three to four hours to heat the water in the tank to a comfortable temperature.Repeat the method in Step 3 by drawing hot water from the nearest hot water faucet and putting it in a cup.

Keep the water running for at least a minute before filling a cup with water.Check the water temperature again and make a comparison with the desired water temperature.As long as the two of you are compatible, you are set to go.

Although it is unlikely, you may have to repeat Steps 4 to 6 if the water temperature is too low or too hot for your liking.After a few hours, take another look at the water temperature.The temperature of your hot water heater may need to be adjusted numerous times before it is at its perfect setting.Here is a video by Home Choice Plumbing that demonstrates how to regulate the temperature of an electric water heater.

  • Pro Tip: Once you’ve found the sweet spot on your thermostat, I recommend marking the dial or knob.


Following the steps for modifying the temperature on an electric water heater are as simple as selecting your desired water temperature, accessing the water heater’s thermostats, and turning the temperature knob to your preference.It may take a few tries before you are able to discover the perfect balance.I hope this article has given you more confidence in your ability to change the temperature of your water heater.

In addition, I would really appreciate it if you could forward this lesson to your relatives and friends.And if you have any questions or issues regarding this guide, please let me know and I will gladly answer them.

What Temperature Should a Hot Water Heater Be Set at?

What temperature should a hot water heater be set at?Do you have the same question as many other people?Setting the water heater to the proper temperature is critical for providing not just more pleasurable showers, but also longer showers.

It also protects individuals from contracting infections.This page provides answers to your most often asked questions about the optimal hot water temperature.We’ll also go through some of the considerations you should keep in mind while adjusting the heater’s thermostat.

Let’s get this party started.

What is the Ideal Temperature Setting of a Water Heater?

There are two schools of thinking that can throw light on the topic of what temperature should be set for a water heater.Water heater manufacturers set the temperature of their water heaters to 140 degrees Fahrenheit by default, believing that the temperature is more calming and pleasant for the majority of people.According to the Occupational Safety and Health Administration, this water heater setting should be used to prevent the growth and multiplication of Legionella and other dangerous germs in water heaters.

According to the Mayo Clinic, Legionella bacteria may be found in both water and soil as non-infectious agents that do not cause disease.In contrast, when these bacteria multiply in water systems, such as those found in air conditioning units and household plumbing, they have the potential to become harmful.People become infected with Legionella bacteria when they inhale water droplets containing the bacteria when showering or utilizing whirlpools, hot tubs, water heaters, or hot water tanks.

Alternatively, the United States Department of Energy and the Environmental Protection Agency have determined that the optimal water temperature is 120 degrees Fahrenheit (or below).Medical and healthcare professionals have also chimed in on the controversy, advising that the hot water heater temperature setting should not be lower than 120 degrees Fahrenheit in order to avoid microbial development in the water heater.The position of the Consumer Product Safety Commission, which recommends a maximum water temperature of 120 degrees Fahrenheit for safety reasons, further complicates the situation.According to the organization, hot water (over 120 degrees Fahrenheit) might induce burn injuries in persons who are vulnerable to them.

  • The recommended temperature of 120 degrees Fahrenheit is likely to be appropriate for most people’s households.
  • Unfortunately, no two families or homes are comparable in their characteristics.
  • As a result, it would be wise to analyze the role that various components play in the overall equation.

What Factors Should You Consider When Setting the Water Heater’s Thermostat?

People have varying opinions on what temperature hot water should be at the optimal time of day. It’s possible that I favor 120 degrees, while you or other individuals could prefer 130 or 140 degrees. Regardless of the sort of water heater you have, it is recommended that you take the following aspects into consideration.


In accordance with the American Burn Association, children under the age of 16 account for 26 percent of all admissions to burn treatment facilities.According to the organization, younger children are more susceptible to scorching injuries because of their weak cognitive and physical abilities, as well as a lack of parental supervision when using hot water, among other factors.Young children also lack the ability to perform self-rescue maneuvers.

Because of pre-existing medical issues, slower response time, and decreased mobility, the elderly are particularly vulnerable to hot water-related burn injuries.In addition, as compared to other age groups, both children and the elderly have smaller skin layer thicknesses.Even when exposed to hot water for a short period of time or when the water temperature is modest, they might sustain severe burn damage.

According to the American Burn Association, three seconds of exposure to 140-degree Fahrenheit water is all it takes to create major burn injuries that necessitates surgical intervention.Because of this, you could believe that a hot water heater setting of 140 degrees Fahrenheit is safe for you.You must, however, lower the temperature in your home to 120 degrees Fahrenheit if you have children or elderly members of your household.

Immune System Functioning

We require a properly functional immune system in order to defend ourselves against infections.Whenever an organism infiltrates our body, the immune system mobilizes an army of defense cells to combat the invasion.Because immune-compromised individuals no longer have a powerful defense army in their bodies, they are more susceptible to infection than the general population.

Increased water temperatures may be required to destroy germs in those who have lowered immune system capabilities.People who use immunosuppressive drugs are unable to protect themselves against infections.In addition to corticosteroids, monoclonal antibodies and biologics, and calcineurin inhibitors are examples of immunosuppressive medications.

People suffering from HIV/AIDS, psoriasis, Crohn’s disease, rheumatoid arthritis, and lupus are all affected in the same way.Patients undergoing organ transplant procedures also have compromised immune systems, which makes them more susceptible to infection than the general population.In houses with immunocompromised individuals, 140 degrees Fahrenheit is the best temperature for domestic hot water to be provided.While certain bacteria are thermophilic or heat-resistant, the vast majority of them cannot endure temperatures beyond 140 degrees Fahrenheit.

  • Even the deadly Legionella bacteria will perish at 122 degrees Fahrenheit (50 degrees Celsius).
  • Unfortunately, certain heat-resistant viruses must be inactivated at temperatures greater than 140 degrees Fahrenheit in order to be killed.
  • Families with immunocompromised individuals should adjust the water heater temperature to 140 degrees Fahrenheit, regardless of the reason.

Energy Consumption

According to the United States Department of Energy, adjusting the water heater to 120 degrees Fahrenheit can result in yearly energy savings ranging from 4 percent to 22 percent.It is estimated that the savings will come from lower demand losses (at least $400 per year) as well as lower standby losses (between $36 and $61 per year).When it comes to your water heater, if you are concerned about your power costs, you may want to keep the temperature no higher than 120 degrees Fahrenheit.

Naturally, if money is not an issue, you may always raise the temperature to 140 degrees Fahrenheit on a regular basis.Once again, I strongly advise you to take into account the age and immunological health of your family members while determining the optimal water heater setting.

Water Appliances’ Energy-efficiency

The ″water preheat″ function on some dishwashers does not allow customers to adjust the temperature of the water heater’s thermostat setting to a more comfortable level. Those who own such a dishwasher are compelled to set the water heater to 140 degrees Fahrenheit as a matter of necessity.

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  • When it comes to the topic ″what temperature should a hot water heater be set at,″ you have two options. Turn down the temperature of your water heater to 120 degrees Fahrenheit if you want to save money on electricity or if you have elderly or young children in the house.
  • If you have members of your household who are immunocompromised or if you don’t mind spending a huge power bill, set the water heater’s temperature to 140 degrees Fahrenheit or higher. If you have a dishwasher that does not have a preheat feature, you may additionally require this option.

Understanding the numerous elements that influence hot water temperature is essential to determining the optimal temperature.

Setting Upper And Lower Thermostat Water Heater: Top Steps To Save

Several people are completely ignorant of the numerous methods they might reduce their energy expenditures.Make sure your water heater’s thermostat is set appropriately.Is a method that will allow you to save money while also being more comfortable at the same time.

While you set your higher and lower thermostats, it implies that when it’s chilly outside, your home will be more comfortable.Your water will be sufficiently heated for a period of time before heating up again.This reduces both the cost of gas and the cost of electricity.

It also contributes to the maintenance of a steady temperature in your house.Consequently, you won’t have to worry about being too hot or chilly!

Why Should I Set the Temperature of the Water Heater by Thermostat?

The temperature of your tankless or storage-type water heater should be set by the thermostats on the unit to reduce energy consumption.Creating distinct controls for the upper and lower sections of a tank type is a common practice.Increases the amount of control you have over the heating capacity.

Additionally, this conserves electricity by heating less than full loads while still providing adequate hot water.Furthermore, the temperatures of the top and bottom components may be controlled independently of one another.In the case of a single thermostat, the connection must be made.

The heating demand will be balanced if they are set at various temperature ranges.This is especially useful when dealing with an electric hot water tank that has two heating components.Alternatively, more than one storage-type heater can be connected in sequence (one after another).

Adjusting Hot Water Heater Temperature on Electric Water Heaters

On electric water heaters, adjusting the temperature of the water is a straightforward task.When the lower thermostat registers a temperature of 140 degrees or above.Then reduce the temperature to 120 degrees, which will allow it to heat more effectively while wasting less energy.

Similarly, adjusting the upper and lower thermostats in your house will help you save money on the heating expenditures for hot water in your home.

Setting the Upper and Lower Thermostat Water Heater

In reality, adjusting the temperature of an electric hot water tank is a straightforward process. You will, however, require certain tools. One of these is a screwdriver that fits into a slot at the bottom of the device, allowing you to adjust the height of the device. Follow the instructions outlined below once you’ve obtained it.

  1. Locate the temperature setting for your higher thermostat. The temperature should be approximately 130 degrees. Even if the temperature is already at 140 degrees or more, try turning it down to 120 degrees and seeing if you notice a change in the amount of hot water available
  2. Locate the temperature setting for your lower thermostat. The temperature should be approximately 120 degrees. Check to see if it’s higher than 110 or 100 and see if you notice a change by turning it down.
  3. You have the ability to customize the temperature by adjusting both the upper and lower thermostat settings. When it comes to lowering your monthly energy expenses, setting the upper and lower thermostats on your water heater is critical.
  4. Electric units have a lower temperature restriction of 120 degrees Fahrenheit to prevent scorching from the heating element of the unit. So first and foremost, make the necessary adjustments.
  5. The process of adjusting the temperature of an electric unit is fairly simple. Adjusting the higher and lower thermostats, on the other hand, would assist you in saving energy on the heating bills of hot water in your house.
  6. Set the top thermostat to a setting that is a few degrees higher than the present temperature and that you want. Afterwards, adjust the lower thermostat to a setting that is a few degrees lower than the present temperature.
  7. Power should be turned on at the breaker box.
  8. Allow a few minutes to pass before turning on the water heater once more.

Why does My Electric Water Heater have Two Thermostats?

An electric unit contains two coils, the bottom coil of which warms the water directly with electricity to just over 120 degrees Fahrenheit for the sake of safety, and the top coil which heats the water indirectly with electricity to just over 120 degrees Fahrenheit for the sake of efficiency.A second heating element, sometimes known as a top coil, is used to guarantee that hot water is available at all times.This is accomplished by pre-heating the water to between 120 and 140 degrees Fahrenheit before it is delivered to the taps.

In addition, most electric water heaters feature two thermostats: an upper and a lower thermostat, which are both located behind two control panels.Setting both thermostats to the same temperature can help to guarantee that your water heater operates correctly.The temperature should be maintained at 120 degrees Fahrenheit for the best results.

If you only have 4 or 6 thermostats, you may set them both to 1 watt per thermostat.The height at the top should not be much lower than the height at the bottom.Tops and bottoms must be at least a small amount higher than each other.You will require two water heaters.

How to Set the Temperature on a Tankless Water Heater

The temperature may be adjusted using the digital control panel located on the control bar. The tankless water heater performs functions that are quite similar to those performed by the thermostats that control the temperature of the air conditioning unit.

FAQs: Common Setting Upper And Lower Thermostat Water Heater

Should the Top and Bottom Water Heater Thermostats be Set to the Same Temperature?

No, the lower thermostat should be set to around 120 degrees Fahrenheit, whilst the top thermostat can be set to 130 or 140 degrees Fahrenheit.

What can I do to Reduce the Energy Consumption of My Water Heater?

Washing your hair quickly and just doing full loads of dishes and laundry can help you save time. When you go on vacation, turn off your water heater and lower the thermostat on your water heater. Water heaters and pipelines should be properly insulated. Install low-flow faucets and showerheads to conserve water. Finally, use appliances that are water-efficient.

What is the Recommended Temperature for a Hot Water Heater?

It is advised that a heater be set around 120 degrees Fahrenheit to achieve maximum efficiency.

Why does My Water Heater Have 2 Thermostats?

Dual-element water heaters utilize two separate thermostats to regulate the temperature of the heating components in the tank. In the upper section of the water column, there is a heating element that provides heat. Depending on your needs, you may be able to lower the temperature. As a result, your power cost will be cheaper as a result of this.

What Happens If the Water Is Too Hot or Too Cold?

Increasing the temperature of the water heater may result in excessive water burning or scalding, and it may also cause leaks to form.The presence of germs and the development of water illness can occur when the levels are too low.If you don’t change the temperature of your water heater, you’ll be burned.

This is most likely the default temperature for most hot water heater manufacturers, which is 140 degrees Fahrenheit in most cases.According to reports, it should be set at 120 or 140 degrees.


Would you like to save more money on your electricity costs while also being more comfortable in your home?Consider the importance of carefully setting your water heater’s thermostat.While you set your higher and lower thermostats, it implies that when it’s chilly outdoors, you’ll be more comfortable.

Your water will be sufficiently heated for a period of time before heating up again.You’ll save money on both gas and electricity bills!In a similar vein, by doing so, you will be able to keep the temperature in your home consistent.

As a result, you won’t have to be concerned about being either too hot or too chilly.Reviews of the Top 10 Best RV Tankless Water Heaters

Adjusting Your Water Heater Settings: How To Maximize Efficiency

Not many people are aware that selecting the proper water heater settings may result in substantial savings.Indeed, while the majority of people don’t give their hot water heater settings a second thought, they are actually highly critical in many situations.Not only will it save you money, but it will also make your showering experience more pleasant as a result of it.

Here is a breakdown of the procedures.

Default Hot Water Heater Settings Can Vary

Water heaters in Phoenix are frequently shipped with preset temperature settings that are as high as 140 degrees Fahrenheit or more.That is far greater than the majority of individuals require, although manufacturers do so for a variety of reasons.For starters, germs cannot thrive in water that hot, according to the Department of Energy.

Increased gas or electric water heater settings can be beneficial for people who have weakened immune systems or respiratory illnesses.In addition to impressing consumers who have presumably recently replaced their tank since the previous one had ceased performing correctly, high temperatures can also be beneficial.Once this psychological trick wears off (and assuming you don’t have a sickness that makes you particularly susceptible to bacteria), you’ll likely receive far more joy from saving money on your water bill, which we’ll teach you how to achieve in the next section.

How Much Are Your Gas and Electric Hot Water Heater Temperature Settings Costing You?

As a general rule, every 20 degrees you reduce the temperature of your gas or electric water heater, you may expect to save as much as ten percent on your utility bill.That’s not too shabby after all!In reality, it adds up over time, and you can almost certainly come up with a number of better uses for the money you save.

″But hold on a minute,″ you may be thinking.″I really enjoy taking hot baths!″ However, you almost probably do not take showers above 140 degrees Fahrenheit, which can cause scorching because of the high temperature.It’s conceivable that you won’t even notice a difference.

No matter what happens, raising the temperature is a simple process.It has also been known to cause aged hot water heaters to stop functioning.

How To Adjust Your Gas and Electric Hot Water Heater Temperature Settings

Now that you understand why you should reduce the temperature of your water heater, let’s have a look at how to go about doing so effectively.

Step One: Get An Accurate Temperature Reading

It’s likely that the thermostat dial linked to your water heater tank is not functioning properly.As a result, you should really use a thermometer to monitor the temperature of the water flowing out of your faucet.The Department of Energy suggests that you measure the amount of water that is flowing out of the faucet that is the furthest away from your water heating system.

Make a note of the settings after you’ve found them.

Step Two: Figure Out Where to Make the Adjustment

There are several distinct types of water heaters, and we’ll go through each of them separately.

Electric Water Heater Settings

In the case of an electric water heater, you must modify the hot water settings at the top and bottom of the unit. Both controls, which are often concealed behind a panel and consist of knobs that you crank to establish the appropriate electric water heater thermostat settings, are typically located on the same side of the panel.

Gas Water Heater Settings

Newer gas water heaters are equipped with temperature controls that are similar to those described above in the section on electric water heaters. Most gas heaters, especially older models, feature a temperature knob near the base that may be easily adjusted to the appropriate temperature.

Tankless Water Heater Settings

Finally, tankless water heaters are available.This is likely the simplest modification to make because most thermostats include an LED screen that allows you to directly control the thermostat’s temperature.In addition to being convenient, these systems frequently allow you to modify the tankless water heater settings more accurately than you could with traditional dial-based adjustment methods.

Step Three: Make The Adjustments

If you have an electric unit, make sure to turn off the electricity to it before modifying the hot water heater settings at the top and bottom, as we previously discussed in detail.This may be accomplished simply turning off the necessary settings on your circuit breaker panel.Doing so is also recommended in the case of a gas water heater that consumes some power (as some newer units do).

But hold on a minute!What temperature should you choose as a starting point?The Department of Energy suggests that you set your heater to 120 degrees Fahrenheit for the best performance.

That should be sufficient heat for the majority of applications in your house.Some water heater temperature controls now include buttons that read ″A-B-C″ instead of numbers, which makes them easier to use.Generally speaking, A denotes 120 degrees, B denotes 130 degrees, and C denotes 140 degrees, respectively.To double-check these settings, consult the owner’s handbook for your water heater.

Step Four: Tweak the Settings as Necessary

After you’ve made the necessary adjustments to your gas or electric water heater thermostat settings, you may discover that you need to make a few more adjustments to get the best setting. You’re trying to strike the perfect balance between comfort and cost-effectiveness. If that’s more than 120 degrees Fahrenheit for you, there’s nothing wrong with that. Make the necessary adjustments!

Frequently Asked Questions

Is 150 Too Hot For A Water Heater?

It is nearly guaranteed that a temperature setting of 150 degrees will be too hot for your water heater. The likelihood of experiencing scalding is quite high at that temperature. You should be concerned about your youngsters, who may experiment with the temperature settings on the faucets while completely unconscious of the risk and end up scorching themselves.

What Is The Maximum Temperature For A Water Heater?

The highest temperature setting for the majority of water heaters is 150 degrees Fahrenheit.

Is 140 Too Hot For A Water Heater?

Yes, temperatures above 140 degrees Fahrenheit are uncomfortable for the majority of people.The only exception would be persons who require an additional layer of protection against germs, which cannot thrive in water at that temperature.However, because such a state d

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