According to Dr. Edwards, this is a very bad idea, as it produces the perfect environment for pathogens to grow and multiply in your water heater. When the size of a household increases this may put strain on a hot water heater. Most hot water heaters have a A-B-C knob. The recommended temperature setting is between 115 degrees and 120 degrees. Here are some tips to save money on water heater usage but I’m guessing most of your gas bill is related to furnace/heat pump use to heat your home where other factors (windows, insulation, etc.) Apparently the.water got too hot on high and the relief valve went off. Most water heaters in the U.S. are the conventional tank water heaters — tall cylinders that heat water slowly at the bottom of the tank and need to run quite often to make sure there is hot water when you want it. On the other hand, the EPA suggests turning the thermostat down to 120 to reduce power consumption, and a booster heater to reach sanitizing temperatures at select outlets. Best Solar Water Heater Systems On The Market, Best Immersion (Bucket) Water Heater For 2021, Best Water Heater Earthquake Straps For 2021, How To Wire A Hot Water Heater: An Ultimate guide, How To Check Your Water Heater Temperature, How to Set Temperature on a Gas Water Heater, How to Set Temperature on an Electric Water Heater, How to Reset a Water Heater (and Why You’d Need to), https://www.waterheaterhub.com/hot-water-smells-like-rotten-eggs-fix/. Do not operate the water heater until it has been fully checked out by a qualified technician, if the water heater: • Has been exposed to fire or damage. You drink cold water anyway. Most gas control valves have a knob with various labels such as A-B-C on them. This has never happened with this heater. Fire or Explosion Harzard. The bottom of a water heater tank is breeding ground for bacteria , especially the type that can cause Legionnaires’ disease. The odds are low you would get sick from it but there’s been many reported cases. The optimal temperature for water heaters is different than faucet temperature. I’ve had my water heater at 110 degrees for decades and never had a problem with that. From what I’ve researched, my recommendation of setting the temp to 130 degrees may not kill Legionella bacteria as quickly as 140, but it should still do the job. Bacteria loves warm-hot conditions and can quickly multiple. Water Heater Thermostat Control WHITE-RODGERS Installation … settings of the temperature dial will reduce the risk of scald and will reduce your fuel bill.! but i do a lot of baking and cooking and the high temp keeps me from constant concern about bacteria and makes clean up a relative cinch. Normally this cold water goes to the bottom of the tank via dip tube but if the tube is broken, the cold water would refill at the top which is where hot water is normally taken from. Thank you for provided a wise, practical, “middle ground” solution. Here is what temperature each letter stands for: It scalds us even on pilot! Thermostatic mixing valves also mitigate against the dreaded “flush flash.”. This video will share the recommended temperature for all water heaters as well as show you how to adjust the temperature on your water heater control knob. Mixing valves are available at plumbing supply or hardware stores. Our hot water heat has 3 marked settings: A, B, C (this being the hottest). We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Taking a bit of time once a year to do these 3 simple steps, will help to extend the life of your tank. Is it the relief valve or themostat or both? I agree….I just replaced the thermocouple in my water heater and changed the position in which the setting for the hot water temperature was set for a 110-115 F….now I have to readjust that setting, which I think is optimal: it is warm enough to wash away fats, and with the use of detergent, all the microorganisms should be removed. Replace the insulation and panels, then restore power. Most gas control valves have a knob with various labels such as A-B-C on them. Remember Dr. Marc Edwards of Virginia Tech who helped prove that Flint Michigan had a lead problem in their water supply? i live in central arkansas and we happen to have great water here; but i do keep my gas water heater at 140. i thought about 150 for a while there, but i dont want to pay the bill for the extra heat i dont need. Also, make sure elements working. Use the labels as a starting point but measure the actual temperature at the closest hot water faucet if you want to be most precise. See: https://www.waterheaterhub.com/hot-water-smells-like-rotten-eggs-fix/. I added what they call a “Water Heater Tank Booster”. Gas and electric water heater temperatures are set at the factory, but can be adjusted for your own preferences with only a couple of tools. ****Tip: If going on vacation turn the dial down to “low”. A dual-element water heater … water heater. But in any case they do not necessarily relate to any specific temperature, just that B is hotter than A, and C is hotter than either A or B. Place a thermometer in a glass of hot water, ours reads 130 degrees recommended for baths, dishwashers. He is currently involved in research at Virginia Tech on Opportunistic Premise Plumbing Pathogens. 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