Make sure you do set your thermostats both the upper and lower at the same temperatures. But if the temperature is set too low, bacteria may begin to grow in the tank. Having said that, if you donât live with anyone who fits into the categories above, 120 degrees Fahrenheit is probably the best temperature setting for your hot water heater. The water heater is built to produce hot water with the temperature ranging from approximately 80 F to 160 F, or higher when used in commercial applications. I donât recommend you set them this high just because thatâs a pretty high temperature. The thermostat(s) on this water heater have been factory set to 120°F to reduce the risk of scald injury. 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. Savings come from turning down of the temperature of your water heater subjected to standby loses and consumption. If you lack the necessary skills to install, troubleshoot or repair the water heater, get help from a qualified person. Sometimes, people want to turn up the water temperature hot enough that it kills bacteria and stops rotten egg smell.In order to kill the bacteria in your hot water, you need to raise the temperature of the water heater to over 160 degrees Fahrenheit (71 degree Celsius) or more. Water heaters are set from the factory to heat water to a maximum of 120 degrees Fahrenheit. Setting the hot water temperature lower also means a savings in energy bills for heating the home's water in many cases. A water heater should not be set beyond 125 degrees Fahrenheit. Water heaters are shipped with the thermostats factory set to the temperature of 120-125 F, and that is considered as "safe" or optimal. This article series describes the various controls used on different types of water heaters and explains how each control is used to set domestic hot water temperature. The printed Instructions and product labels contain model-specific information, important warnings and safety notices. You should always employ a professional to adjust the temperature of your hot water tank. Next, check the thermostats. A poorly functioning water heater could result in bigger electricity bills as well as water that is either piping hot or ice cold. Adjusting an electric hot water heater temperature thermostat setting is a little more involved, but still relatively easy. However, a lower temperature does mean you will run out of hot water more quickly. This delays the hot water recovery at the top of the tank and means the faucet temperature starts at 140 degrees but then drops to 130 degrees, which can be annoying for adjustment at the faucet. Under Australian law your hot water tank thermostat should be set at 70 degrees celsius. And you got that stacking that happens, that makes your water heater very efficient. 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. 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. A failed thermostat or heating element in an electric water heater can also cause hot water temperature fluctuations. So a lot of people crank it up as high as they can get, and theyâll get it up to 140 degrees. Most hot water heaters have a A-B-C knob. 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. Russ 3,114 views. This is known as a flip/flop system. In the case in which the upper thermostat is 140 and the lower is 130, the upper element heats the entire tank to 140 degrees and the lower element rarely turns on. Whether you have a gas or electric water heater, the default temperature set from the factory will be between 120ºF to 140ºF. Many people turn up the water temperature to kill bacteria in the water. For each 10° degrees you go up (meaning hotter), your electricity usage may go up 3% to 5% percent. - Duration: 4:14. If water temperature fluctuates below the set temperature, check for failed heating elements and thermostats. This item Ivation Precision-Temperature Electric Hot Water Tea Kettle Pot 1.7 Liter (7-Cup), 1500 Watt, Stainless Steel Cordless, 6 Preset Variable Heat Settings for Tea, Coffee or Baby Formula Bonavita 1.0L Variable Temperature Electric Kettle, 1.0 Liters, Metallic anything higher could cause problems. Most of the time we find that when we go out there that the water heater is set too hot. Pay attention to where the hand rests, as this will allow you to fine-tune your water temperature more precisely. Some people like to set their water heater on the high side, between 140-150 degrees, and make adjustments at the tap, while others believe that setting the thermostat above 120 can be dangerous , raising the potential for scalding. But finding that setting on the water heater temperature setting dial isnât easy, because most dials arenât labeled with numbers. Factors That Affect Hot Water Temperature Setting. If the water heater tends to overheat the water⦠If you are ready to adjust the temperature for your water heater, follow these steps. Homeowners with a dishwasher that does not pre-heat the water may want to set their water heater to 140 degrees. If you only set one of them at a different temperature, the other one will always be trying to heat up because of the temperature difference in the upper and lower water. ⢠The high limit opens at 170 °F, 190 °F with A7 circuit and can be manually reset. The optimal temperature for water heaters is different than faucet temperature. A hot water setting of 60C in hotels, hospitals and other large public buildings can control Legionnaires' disease. If you have a dishwasher without a booster heater, it may require a water temperature within a range of 130ºF to 140ºF for optimum cleaning. Whether your hot water is produced by a tankless coil, indirect water heater, calorifier, geyser, electric, gas, or oil fired water heater or other water heating device, the heater will have a control that allows you to manage the heater's output temperature. Higher temperatures increase the risk of scalding, but even at 120°F, hot water can scald in a matter of minutes. The BC Plumbing Code calls for an electric service water heater temperature of 60°C, because storing hot water below this temperature may lead to the growth of legionella bacteria, which poses a health risk (not a concern for gas-type water heaters). 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 ⦠(a) Storage calorifiers and recirculating hot water systems must store hot water at a minimum temperature of 60°C and deliver hot water of at least 50°C to the outlet. The temperature of your hot water is regulated by this adjustable thermostat which normally has a range between 90 and 150 degrees Fahrenheit. I like to see the top one set at the top side on the electric heater at about 110 to 115 degrees and the bottom one 105 to 110. It is important to schedule annual maintenance to ensure that your unit is clean (hard water build-up is damaging to your water heater) and is set to the right temperature range. Consequently, the minimum water heater outlet temperature in residential systems should be set at 54C to produce a tap temperature of at least 49C. Water heaters are typically set at 120 degrees. If the water heater is in a hot envi-ronment, the water in the tank can become as hot as the surrounding air, regardless of the thermostat se « ng. The 120-degree setting is standard. IMPORTANT - Read and follow the printed Installation Instructions that came with your water heater. On a 240 volt water heater, there will always be 120 volts to both elements. First, adjust the thermostat setting to lower the water temperature if the thermostat is set above 130 degrees. To reduce the risk of burns from hot tap water, the temperature setting on the water heater can be turned down. SETTINGS ⢠Temperature range on residential electric water heater is from 90 ° F to 150 °F, except for A7 circuit, which is 110 °F to 170 °F. The location of the dial will vary depending on the model and type of water heater. Well, the EPA recommends a hot temperature setting of 120-degrees F for both safety and energy-saving purposes. Setting the water to a higher temperature increases ... How to Fix the Thermostat on a Hot Water Heater. If the water supplied to the water heater is pre-heated (for example, by a solar system) the temperature in the tank may be higher than the water heaterâs thermostat se « ng. Summary of Setting the Temperature of Your Tankless Water Heater. How to set the temperature of an electric 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 â Helps to cut down bills. Change the temperature on electric hot water heater - Duration: 5:57. ... Set the temp of your electric hot water heater for savings and safety. 7 Steps for How to Set Water Heater Temperature. Step 1: Check you water heater temperature setting. Sequence of Operation for a Dual Element Electric Water Heater The basic operation of a two thermostat system (upper and lower) on an electric water heater of 240 volt supply is as follows: Only one element will come on at any one time. Sometimes people call in because their tankless water heater keeps cutting on and off. What is the correct temperature you should set your hot water heater? The majority of electric water heaters have two thermostats: ⦠If you want to increase the water heater thermostat(s) setting(s), install thermostatic mixing valves at each point of use. On most residential electric hot water heaters there will be both an upper and lower thermostat and they should be adjusted to the same temperature. 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. Adjusting an Electric Hot Water Heater Temperature Thermostat Setting. The adjusting screws on newer electric water heaters feature indicator hands which tell you approximately how hot the current setting is. Do not try adjusting your hot water thermostat yourself. Turn off the power to the water heater at the homeâs circuit breaker panel. [14] However, there is less danger of bacterial growth in smaller domestic hot water tanks. ⢠The water heater temperature is shipped with both thermostats factory preset at Contact the hot water service technicians at Cheapa Hot Water for more information. 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