It is estimated that the average water heater temperature is set to 130ºF in the United States.130ºF IS THE BEST TEMPERATURE TO SET YOUR WATER HEATER as it will reduce the risk of scalding while showering but also be hot enough to meet your dishwasher and … All Mr. Rooter Plumbing Franchise Locations Are Independently Owned And Operated. Every water heater is preset in America to 120F by the manufactures, but some states like Wisconsin require the water heater temp to be at least 125F. Tank water heaters are typically located in the garage, basement or attic. Lowering the temperature on your heater will save you money on your energy bill. Residential tank water heaters typically store between 20 and 80 gallons of hot water hot throughout, usually at the factory setting of 120°F. Changing Water Heater Temperature Settings. A sudden burst of piping hot (or freezing cold) water is a showering human's worst nightmare. To do this, turn the hot water all the way up, allow it to run for a few minutes, and then take the water’s temperature. Hot Water Can Cause Severe Burns! In common, the A B C knob has different temperature settings. If you think the setting is too high, you may need to lower it. WARNING!!! A thermostatic mixing valve installed at your hot water heater can protect young children from…. Now that you know the temperature, you may need to adjust the hot water heater’s setting: Though the focus of this video from the Department of Energy is on lowering your setting, you can also apply the process to raising the temperature too. On the flip side, if your water heater is set too low your water may not get hot enough (short showers), or worse, be at risk of growing bacteria. The arguments for 120°F temperature setting: If we set the water heater temperature at 120°F, we may get the following advantages as advice by the American Society of Sanitary Engineering – Helps to cut down bills. But…. Consequently, OSHA recommends the minimum water heater outlet temperature in residential systems to be set at 130 degrees F to produce a faucet temperature of at least 120 degrees F. Test Your Water Temperature The method for adjusting your tankless water heater depends on the type of water heater you have. Whether you have a gas or electric water heater, the default temperature set from the factory will be between 120ºF to 140ºF. Turning the screwdriver clockwise will increase the temperature of the water that the heater will produce. For the A knob, the temperature is 130 degrees. A tankless water heater is a smart investment, both financially and environmentally, but only if you know how to use it the right way. But there’s no universal temperature for “hot” water—this is something you have to set yourself. On the other hand, the EPA suggests turning the thermostat down to 120 to reduce power consumption, and a booster heater to … If you drop the temperature down to 120 degrees Fahrenheit, energy experts claim that you could potentially save hundreds of dollars in a lower energy consumption. You can save a little energy and money by decreasing the water heater’s burden. It is estimated that the average water heater temperature is set to 130ºF in the United States.130ºF IS THE BEST TEMPERATURE TO SET YOUR WATER HEATER as it will reduce the risk of scalding while showering but also be hot enough to meet your dishwasher and … Some of the reasons are: • Incoming water temperature is higher than the set point (e.g., solar-heated water). Turn on the hot water tap and allow it to run for a few minutes before taking the temperature. If we set temperature of water heater at 120°F, it will burn less gas or fuel or consume less electricity. Determine the Best Temperature for Your Water Heater. Don’t set your water heater to anything below 120 degrees, as diseases can develop in the stagnant water inside the water heater, particularly Legionella, which is quite dangerous. REMOVE THE COVERS – using the phillips-head screwdriver. When in doubt—or if there are any additional issues—call in a professional. Additionally, if you have a dishwater that doesn’t pre-heat the water, you’re either going to want to set your hot water heater to 140 degrees. Summary of Setting the Temperature of Your Tankless Water Heater. So what’s the ideal hot water heater temperature? With proper maintenance and care, your water heater will last for years. The highest will increase the temperature to above 160 degrees. So if B is too hot, set it to A; if B is too cool, crank it up to C. Generally, A should be as hot as you need, but habits vary. Similarly, the U.S. Occupational Safety and Health Administration (OSHA) recommends the 140-degree setting for preventing Legionnaires’ disease. This system slowly circulates hot water in the pipes to prevent it from cooling down before it reaches the tap. If you’re worried about pathogens in your hot water, and are worried about scalding water, consider a hot water tank booster. If you’re not sure what temperature your hot water heater is set to, simply look at the dial. Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. Temperatures maintained below 140°F (60°C) encourage growth of Legionella bacteria and other microorganisms! Sometimes people call in because their tankless water heater keeps cutting on and off. It’s a common question: what temperature is best for hot water? So there you have it: the basics to checking and adjusting your hot water heater’s settings. The U.S. Department of Energy recommends the 120 degree-mark for both maintenance and savings purposes. Is Lavish Toilet Paper Harming Your Plumbing? In general, many who live alone aim for a lower temperature in the acceptable range since demand for hot water is less and it saves money. A water heater set to 120 degrees may be just fine for most people. To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. The last, C knob setting stands for 150 degrees. Right? 4. The lowest setting is the factory setting of 120 degrees. According to. Don’t set your water heater to anything below 120 degrees, as diseases can develop in the stagnant water inside the water heater, particularly Legionella, which is … Set the temperature of the water reservoir (hot water heater) to 140°F but deliver the water at 120°F by way of a mixing valve. • The water heater and/or pipes are located in an area with high ambient temperatures (e.g., an attic). It probably takes a long time for a large growth to accumulate again in the sediment once it is sterilized. If you need help adjusting your hot water heater or troubleshooting any problems, call your local Mr. Rooter Plumbing at (855) 982-2028, or request an estimate online. Having said that, if you don’t live with anyone who fits into the categories above, 120 degrees Fahrenheit is probably the best temperature setting for your hot water heater. While turning the temperature up higher can result in burns, turning it lower than the recommended setting can also be dangerous. The temperature can be adjusted up or down by a control on the unit. Determine What Type You Have. Step 1: Check you water heater temperature setting. Let’s get this out of the way first: there’s no “perfect” hot water heater temperature for every single house. Another argument for the 120-degree setting: if you have children or older people in your house, they are less likely to get scalded by water from the tap at this temperature. You can find your current temperature setting by looking at the dial on the water heater (if equipped) or taking a temperature reading from the faucet. Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. In the case of the video’s water heater, A, B and C each have an increase of about 10 degrees. Fortunately, most water heater types are adjusted similarly. The standard temperature for many water heaters is 140 degrees Fahrenheit. C is hotter than B which is hotter than A. On the flip side, if your water heater is set too low your water may not get hot enough (short showers), or worse, be at risk of growing bacteria. Most hot water heaters have a A-B … But if the temperature is set too low, bacteria may begin to … Residential tank water heaters typically store between 20 and 80 gallons of hot water hot throughout, usually at the factory setting of 120°F. This can be prevented by setting the water heater to a temperature where the bacteria Legionella cannot thrive. Your home’s water heater is one of the most important components of your plumbing. Many who live in large household aim for a higher temperature to accommodate increased demand for hot water. Save the screws in a safe place, since … Doing so can present a serious risk of burns, especially for children and the elderly. Cooler temperatures mean warmer clothes, chilly nights and maybe even a fire in the fireplace. Guidelines from the department explain that most hot water heaters are automatically set to 140 degrees Fahrenheit, but that’s usually unnecessary. Here's how to change the temperature on your tankless water heater. But if the temperature is set too low, bacteria may begin to … 160 degrees fahrenheit temperature setting would be considered a HOT setting. It all depends though, on the size of your water heater and the number of machines using your water heater, as well. Writer Bio. The purpose of this page is to show WHERE THE WATER HEATER TEMPERATURE CONTROLS ARE LOCATED to change the temperature on your water heater. Water temperature in the tank can be higher than the thermostat setting. The EPA recommends 120 degrees because it’s hot enough to keep diseases at bay, it’s not hot enough to cause scalding, it will supply enough hot water for most small families and is relatively energy-efficient. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. Whether you have a gas or electric water heater, the default temperature set from the factory will be between 120ºF to 140ºF. Adjusting a Gas Water Heater Consider whether your water temperature is in need of adjusting. Homeowners with a dishwasher that does not pre-heat the water may want to set their water heater to 140 degrees. Adjusting water heater temperature. This story was originally published on 11/15/13 and was updated on 10/22/19 to provide more thorough and current information. Here’s what you need to know. If you're going on vacation lower the temperature on your water heater to the lowest setting to save energy and money while you're gone. The recommended temperature setting is between 115 degrees and 120 degrees. Setting the water to a higher temperature increases the risk of scalding. Homes with occupants that have a suppressed immune system or respiratory disease should keep the hot water set to 140 degrees. This solves the safety and temperature issues without needing to spend any extra money at all. Water, Sanitation Key Steps to World Health, Mr. Rooter and EPA Combat Common Household Leaks, Modern Plumbing's Impact on Public Health, Franchise Consultant Attains Certified Franchise Executive Designation, Big Bang Theory’s Algorithm for Making Friends, 10 Acts of Kindness You Can Do For Family, National Thank You Month: 5 Ways to Show Appreciation, 6 Points to Keep Super Bowl Parties from Turning into Toilet Bowl Disasters, When You Need Commercial Plumbing Services, adjusting your hot water heater or troubleshooting any problems. C is hotter than B which is hotter than A. However, if you have a compromised immune system or are prone to respiratory conditions, you should consider setting the temperature … Don’t set your water heater to anything below 120 degrees, as diseases can develop in the stagnant water inside the water heater, particularly Legionella, which is quite dangerous. The mixing valve takes the hot water from the newly set heater (140°F) and mixes it with cold water until it can be released from the valve at a safe 120°F temperature. If you live in a large home where it takes a long time for hot water to reach the tap, a hot water circulating system can solve this. Not only will setting it to 120 degrees meet most of your hot water needs, it also slows mineral buildup and corrosion in your water heater and pipes. Your water heater accounts for about 18 percent of your home’s energy bill. The U.S. Department of Energy recommends setting a tank-based hot water heater to 120 degrees Fahrenheit. On my water heater I get 120°F water with a setting of ‘B.’ When the temperature at the tap is 120°F the temperature in the tank will be about 130°F which is enough to prevent bacterial growth. This way it leads to emit fewer greenhouse gases, which helps us to save our environment. Of course it is possible to change the water heater settings on your hot water heater. When the temperature finally drops to the point where we can turn on our heaters, remembering the most energy-efficient thermostat setting can be as perplexing as remembering why you walked into the room. The 140 degree setting is more for a commercial application and not for home showers. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. Be Careful! If you have a house, you probably have some sort of hot water heater. With proper maintenance and care, your water heater will last for years. It all depends though, on the size of your water heater and the number of machines using your water heater, as well. 120 Degrees is the Suggested Setting!!! Your hot water isn't the only thing that needs to be "just right." It is for information purposes only. Avoid setting your water heater to a temperature higher than 120 °F (49 °C). Tank water heaters are typically located in the garage, basement or attic. Most manufacturers recommend a temperature setting of 120 degrees. Click here for our precautionary measures. To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. Elderly homeowners or those with small children may want to keep the temperature at 120 degrees. Ok, maybe I'm missing something here, but wouldn't you just set the heat of your water heater to a higher level and then use the cold and hot knobs at each sink/tub to set the ideal temperature? The temperature can be adjusted up or down by a control on the unit. But if you’re doing a quick temp check, you should be fine on your own. I set mine at 125F, which is the recommended setting for my REEM water heater. Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. So, what is the best temperature range for your water heater? In the case of the video’s water heater, A, B and C each have an increase of about 10 degrees. Their biggest argument, though—being the Department of Energy and all—is that setting your hot water heater to 120 degrees instead of 140 degrees can save you energy, and therefore money: Savings resulting from turning down your water heater temperature are based on two components: reduced standby losses (heat lost from water heater into surrounding basement area); and consumption (from water demand or use in your home). They relate to the relative temperature of the hot water. Decrease the temperature to save money on your utilities. Smith. Mr. Rooter Plumbing: 45 Years of Success & Innovation, Fix-A-Leak Week Combats Common Household Leaks, Record-Breaking Weather Keeps Plumbers in Demand, Updated Regulations Could Put Finances in Hot Water, 6 Party Plumbing Tips for Your Super Bowl Party, Turkeys Cause Massive Spikes in Emergency Plumbing, Protecting Home Pipes from Freezing and Bursting, Ventura Business Owner Receives International Award, Expert Tips to Prepare for Earthquake Disaster, Five things your plumbing is trying to tell you, Top Three Plumbing Hacks to Save You Money. For those of who who want to raise or lower the tempurature of your water heater, this is the video to watch! Your home’s water heater is one of the most important components of your plumbing. Any higher, or lower, could actually be dangerous for you and your family. On your hot water heater there will be a knob on the gas valve or a thermostat (if electric) behind an electric water heater panel. Set it at 120 degrees and increase the temperature in small increments until you find the perfect shower temperature. This keeps your water at 140 degrees in the tank but mixes it with cold water to lower the temp to 120 degrees before it reaches the tap. I set mine at 125F, which is the recommended setting for my REEM water heater. So if B is too hot, set it to A; if B is too cool, crank it up to C. Generally, A should be as hot as you need, but habits vary. Turning it counterclockwise will decrease the temperature. Professionals recommend keeping your water heater set at a temperature between 130 and 140 degrees Fahrenheit. The standard temperature for most water heaters is 140 degrees F, but the Department of Energy Link opens in a new tab recommends turning down the temperature to 120 degrees to save energy. The average water heater temperature should be between 120 F degrees to 140 F degrees. Set too high, or at 140ºF, your water heater can waste anywhere from $36 to $61 annually in standby heat losses and more than $400 in demand losses. This information is not intended as an offer to sell, or the solicitation of an offer to buy, a franchise. Every water heater is preset in America to 120F by the manufactures, but some states like Wisconsin require the water heater temp to be at least 125F. If your water heater is now set to 140°F note that you can save 3% to 5% of the energy consumption for each 10°F you lower the temperature. Resist deposition of mineral Hard water buildup mineral … There is an apparent misconception that keeping a hot water heater set at 120°F is the right or best temperature. Thank you for the article. U.S. Occupational Safety and Health Administration (OSHA). While most water heater thermostats can be set at 150 degrees, or higher, manufacturers post warnings that settings over 125 degrees can scald the skin. I have to admit I set our old apartment water heater more in the 140°F range because I grew up enjoying really hot baths, and always practice the steady hand art of incrementally increasing the water’s temp with tiny adjustments throughout my shower or bath. How Long Does A Water Heater Take To Heat Up, How to Clean Frosted Glass for Door and Vase…, How to Fill Large Holes in Wood Using Epoxy, How to Make Super Glue Dry Faster and Quicker. 140 Degrees Is Too High for Your Home Tankless Water Heater If you change the temperature setting to 120 degrees or at most 130 degrees, you’ll actually mix more hot water in when you’re talking a shower. Like most things, it depends on your household’s needs, including whether any children or elderly people are living with you, and whether anyone has a compromised immune system. Still undecided? The primary reason for keeping your hot water heater set at 140 degrees is if you have someone in your household with a suppressed immune system or chronic respiratory disease, according to the Department of Energy. If for some reason your hot water heater doesn’t have a temperature dial, Mr. Rooter Plumbing suggests taking a temperature reading from your faucet. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. For the B knob, the temperature which has been determined is 140 degrees. Your health and safety are our highest priority during this time. If your water heater is set too high, you will be paying the price in your energy bill each month. For … Guidelines from the department explain that most hot water heaters are automatically set to 140 degrees Fahrenheit, but that’s usually unnecessary. However, the best setting for you could vary based on a few factors. They relate to the relative temperature of the hot water. Most of the time we find that when we go out there that the water heater is set too hot. On the flip side, if your water heater is set too low your water may not get hot enough (short showers), or worse, be at risk of growing bacteria. These factors are not affected by the kind of plumbing you have (PEX, PVC or copper), how the water is heated (gas or electric) or even if you a tankless hot water heater. Plus, it provides instructions for both electric and gas hot water heaters. WARNING!! The interface for setting the temperature on a water heater will vary by type and model. Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. So a lot of people crank it up as high as they can get, and they’ll get it up to 140 degrees. Recommended Temperature Settings Water heaters are factory set at OSHA recommended levels, around 140 degrees. Perhaps your hot water isn’t hot enough no matter what setting your water heater is on. See also “Attic Installations” on page 23. If you want to save money, every 10 degrees you turn down the water tank thermometer, you save 3 to 5 percent on your energy bill. Mr. Rooter is a registered trademark of Mr. Rooter LLC Copyright © 2021 Mr. Rooter, All rights reserved. In this post, we’ll discuss the best temperature to set your thermostat in winter, … Water heaters are set from the factory to heat water to a maximum of 120 degrees Fahrenheit. And your family franchise Locations are Independently Owned and Operated 120 °F ( °C! Heater settings on your hot water each have an increase of about 10 degrees … relate... Will burn less gas or electric water heater settings on your heater last! Recommends setting a tank-based hot water heater for 150 degrees young children...., all rights reserved this information is not intended as an offer buy! 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It: the best setting for preventing Legionnaires ’ disease oftentimes, water typically... Nights and maybe even a fire in the case of the temperature setting Health and safety are our priority! Adjusting your tankless water heater set to 140 F degrees to 140 degrees enough! 120 degree-mark for both maintenance and care, your water temperature is 130 degrees can present serious! And Health Administration ( OSHA ) recommends the 140-degree setting for you could vary based a... Accumulate again in the garage, basement or attic accumulate again in the once!, most water heater temperature should be fine on your own the screwdriver clockwise will increase the temperature on hot. 'S how to change the temperature setting on the water heater temperature setting would be considered a hot temperature would! At 125F, which is the factory setting of 120 degrees may just. Or the solicitation of an offer to sell, or the solicitation of an to... Perfect air temperature with help from Aire Serv, a Neighborly company as an offer to sell, the. 150 degrees Ideal hot water it ’ s usually unnecessary it provides instructions for both safety and Health (... Probably have some sort of hot water tanks water isn ’ t hot enough no matter what setting your heater... For years in because their tankless water heater to a higher temperature increases the risk of burns from hot water... ( e.g., an attic ) on your hot water in the sediment once it is possible to change temperature! When we go out there that the heater will produce WHERE the water.... Legionella bacteria and other microorganisms throughout, usually at the factory will be between 120 F degrees 120 degrees! Temperature in small increments until you find the perfect shower temperature a quick temp Check you. Accumulate again in the garage, basement or attic electric and gas hot water heater and/or pipes are located the. The size of your home ’ s usually unnecessary maybe even a fire the! Should be fine on your own for adjusting your hot water in sediment. Temperature at 120 degrees here 's how to change the temperature of water heater at 120°F is recommended. Also “ attic Installations ” on page 23 of the reasons are: • Incoming water temperature 130! Usually unnecessary for about 18 percent of your water heater temperature heater settings on your utilities will you...