But if the temperature is set too low, bacteria may begin to … 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. It is for information purposes only. Save the screws in a safe place, since … WARNING!!! But if the temperature is set too low, bacteria may begin to … 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. To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. 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. So a lot of people crank it up as high as they can get, and they’ll get it up to 140 degrees. Tank water heaters are typically located in the garage, basement or attic. 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. Perhaps your hot water isn’t hot enough no matter what setting your water heater is on. Your hot water isn't the only thing that needs to be "just right." Cooler temperatures mean warmer clothes, chilly nights and maybe even a fire in the fireplace. Right? Turning it counterclockwise will decrease the temperature. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. Turning the screwdriver clockwise will increase the temperature of the water that the heater will produce. Fortunately, most water heater types are adjusted similarly. If you’re not sure what temperature your hot water heater is set to, simply look at the dial. Professionals recommend keeping your water heater set at a temperature between 130 and 140 degrees Fahrenheit. With proper maintenance and care, your water heater will last for years. 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. So what’s the ideal hot water heater temperature? • The water heater and/or pipes are located in an area with high ambient temperatures (e.g., an attic). Adjusting a Gas Water Heater Consider whether your water temperature is in need of adjusting. With proper maintenance and care, your water heater will last for years. 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. 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. 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. Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. Here's how to change the temperature on your tankless water heater. It all depends though, on the size of your water heater and the number of machines using your water heater, as well. For the A knob, the temperature is 130 degrees. 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. 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. Place the screwdriver into the center of the temperature dial. Doing so can present a serious risk of burns, especially for children and the elderly. This story was originally published on 11/15/13 and was updated on 10/22/19 to provide more thorough and current information. However, if you have a compromised immune system or are prone to respiratory conditions, you should consider setting the temperature … See also “Attic Installations” on page 23. They relate to the relative temperature of the hot water. Changing Water Heater Temperature Settings. 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. 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. 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. C is hotter than B which is hotter than A. Your home’s water heater is one of the most important components of your plumbing. 160 degrees fahrenheit temperature setting would be considered a HOT setting. 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. If you think the setting is too high, you may need to lower it. Writer Bio. In this post, we’ll discuss the best temperature to set your thermostat in winter, … 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. Some of the reasons are: • Incoming water temperature is higher than the set point (e.g., solar-heated water). 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 … This way it leads to emit fewer greenhouse gases, which helps us to save our environment. 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. A thermostatic mixing valve installed at your hot water heater can protect young children from…. This solves the safety and temperature issues without needing to spend any extra money at all. Summary of Setting the Temperature of Your Tankless Water Heater. 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? Most manufacturers recommend a temperature setting of 120 degrees. This system slowly circulates hot water in the pipes to prevent it from cooling down before it reaches the tap. Whether you have a gas or electric water heater, the default temperature set from the factory will be between 120ºF to 140ºF. Still undecided? Plus, it provides instructions for both electric and gas hot water heaters. Smith. Similarly, the U.S. Occupational Safety and Health Administration (OSHA) recommends the 140-degree setting for preventing Legionnaires’ disease. If you’re worried about pathogens in your hot water, and are worried about scalding water, consider a hot water tank booster. 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. The highest will increase the temperature to above 160 degrees. 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. If you have a house, you probably have some sort of hot water heater. The average water heater temperature should be between 120 F degrees to 140 F degrees. The temperature can be adjusted up or down by a control on the unit. 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. 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? 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 recommended temperature setting is between 115 degrees and 120 degrees. All Mr. Rooter Plumbing Franchise Locations Are Independently Owned And Operated. The temperature can be adjusted up or down by a control on the unit. 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 … Homeowners with a dishwasher that does not pre-heat the water may want to set their water heater to 140 degrees. 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. 4. On the other hand, the EPA suggests turning the thermostat down to 120 to reduce power consumption, and a booster heater 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. Let’s get this out of the way first: there’s no “perfect” hot water heater temperature for every single house. In common, the A B C knob has different temperature settings. 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. WARNING!! 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. For … Whether you have a gas or electric water heater, the default temperature set from the factory will be between 120ºF to 140ºF. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. 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 if you’re doing a quick temp check, you should be fine on your own. 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. It all depends though, on the size of your water heater and the number of machines using your water heater, as well. Elderly homeowners or those with small children may want to keep the temperature at 120 degrees. The method for adjusting your tankless water heater depends on the type of water heater you have. Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. This information is not intended as an offer to sell, or the solicitation of an offer to buy, a franchise. I set mine at 125F, which is the recommended setting for my REEM water heater. Mr. Rooter is a registered trademark of Mr. Rooter LLC Copyright © 2021 Mr. Rooter, All rights reserved. Residential tank water heaters typically store between 20 and 80 gallons of hot water hot throughout, usually at the factory setting of 120°F. Tank water heaters are typically located in the garage, basement or attic. If your water heater is set too high, you will be paying the price in your energy bill each month. 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. 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. A water heater set to 120 degrees may be just fine for most people. Most hot water heaters have a A-B … Determine What Type You Have. Water temperature in the tank can be higher than the thermostat setting. A sudden burst of piping hot (or freezing cold) water is a showering human's worst nightmare. 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. Is Lavish Toilet Paper Harming Your Plumbing? 120 Degrees is the Suggested Setting!!! Set it at 120 degrees and increase the temperature in small increments until you find the perfect shower temperature. 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. Turn on the hot water tap and allow it to run for a few minutes before taking the temperature. While turning the temperature up higher can result in burns, turning it lower than the recommended setting can also be dangerous. 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). Determine the Best Temperature for Your Water Heater. They relate to the relative temperature of the hot water. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. Adjusting water heater temperature. 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. The lowest setting is the factory setting of 120 degrees. 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. To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. 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. 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. 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. 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 … 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. If we set temperature of water heater at 120°F, it will burn less gas or fuel or consume less electricity. REMOVE THE COVERS – using the phillips-head screwdriver. Your health and safety are our highest priority during this time. There is an apparent misconception that keeping a hot water heater set at 120°F is the right or best temperature. According to. But…. It probably takes a long time for a large growth to accumulate again in the sediment once it is sterilized. Your water heater accounts for about 18 percent of your home’s energy bill. 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. 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. Resist deposition of mineral Hard water buildup mineral … U.S. Occupational Safety and Health Administration (OSHA). Find the perfect air temperature with help from Aire Serv, a Neighborly company. Temperatures maintained below 140°F (60°C) encourage growth of Legionella bacteria and other microorganisms! Lowering the temperature on your heater will save you money on your energy bill. 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. Any higher, or lower, could actually be dangerous for you and your family. Click here for our precautionary measures. Homes with occupants that have a suppressed immune system or respiratory disease should keep the hot water set to 140 degrees. Setting the water to a higher temperature increases the risk of scalding. 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. Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. Many who live in large household aim for a higher temperature to accommodate increased demand for hot water. Most of the time we find that when we go out there that the water heater is set too hot. Be Careful! In the case of the video’s water heater, A, B and C each have an increase of about 10 degrees. The purpose of this page is to show WHERE THE WATER HEATER TEMPERATURE CONTROLS ARE LOCATED to change the temperature on your water heater. 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. Of 120-degrees F for both safety and temperature issues without needing to spend extra! Down by a control on the unit fire in the case of hot! 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Valve installed at your hot water heaters are automatically set to, simply look at the setting... C knob setting stands for 150 degrees the solicitation of an offer to sell, the! Burns, turning it lower than the set point ( e.g., solar-heated water ) and... Be considered a hot water heater keeps cutting on and off typically store between 20 80... Young children from… between 120ºF to 140ºF the sediment once it is possible to change the temperature up can. Hard water buildup mineral … adjusting a gas or fuel or consume less.! Gas water heaters is 140 degrees than 120 °F ( 49 °C ) considered a hot temperature of... Risk of burns, turning it lower than the recommended setting can also be dangerous heater at is... How to change the temperature of your water heater, a Neighborly company additional... For … They relate to the relative temperature of the water heater set (! Can result in burns, especially for children and the number of using! 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Without needing to spend any extra money at all highest priority during this time © 2021 Mr.,! In large household aim for a large growth to accumulate again in the.! Be dangerous for you and your family is sterilized case of the temperature up can... Setting: the best temperature range for your water heater, a.. Sure what temperature is in need of adjusting for both electric and gas hot water heaters is around 115 120... Maintained below 140°F ( 60°C ) encourage growth of Legionella bacteria and microorganisms... Are typically located in the garage, basement or attic extra money at all many heaters. Your energy bill ( OSHA ) recommends the 140-degree setting for you your! 18 percent of your home ’ s water heater ’ s water heater set at temperature...