It scalds us even on pilot! Also the floor under the container is wet and the heater has no feet. Re: Standard Water Heater Temp Setting; Author: hj (AZ) Usually the HOT setting is 150 or 160, and A, B, and C, are 120, 130, and 140. Reading this made me think of a recent lecture I attended. The recommended temperature setting is between 115 degrees and 120 degrees. Every other page I’ve been to has been long and pretty useless . Apparently the.water got too hot on high and the relief valve went off. Thanks for the simple, honest answer! And like another commenter said, we drink the cold water anyway. Thats why the blue/red plastic color markers are are on the tank! Most water heaters do not have a temperature gauge with a readout. Also, make sure elements working. They can be installed on new or existing water heaters. Advice? In the case of the video’s water heater, A, B and C each have an increase of about 10 degrees.  We pride ourselves on making sure each and every client gets our best work and same day reports. Locate the thermostat adjustment beneath the insulation. This mini-flush works great, taking a fraction of the time and can be done while the water heater is up and running.Â. Know the Ideal Setting: The best setting for gas water heaters is around 115 to 120 degrees Fahrenheit. With an old water heater, a broken dip tube is often the issue. I have had it for more than a decade. That could be your problem. 120 degrees is sometimes labeled “Hot” or with a little triangle icon. The odds are low you would get sick from it but there’s been many reported cases. Is it the relief valve or themostat or both? Check make sure the 2 elements are set to same temp. 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. Installed just over year ago in apartment complex, new one given me nothing but problems. I have a friend who replaced his own hot water heater but installed it backwards! Although manufacturer's usually set water heaters at 140 degrees F, you can reduce your carbon footprint and save money by adjusting your water heater thermostat. Gas water heaters have a setting knob that can be turned to adjust the temperature. Gas water heaters have a setting knob that can be turned to adjust the temperature. 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. 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.) I think. Insert your cooking thermometer, and then adjust the settings as desired. 120 isnt hot enough, 130 might be perfect, but i prefer 140. Don't go above b/120F. It probably takes a long time for a large growth to accumulate again in the sediment once it is sterilized. 2- Bottom is corroding already, called Reem, no replacement until visual water leaks. Nearly every other article on the internet recommends either 120 degrees (to avoid scalding risk) or 140 degrees (to avoid Legionella risk), but offers no middle ground to address both issues. Many modern homes come with dual-element water heaters. If you are running out of hot water too quickly (with a 40 gallon W.H. Fire or Explosion Harzard. Although I’ve done a lot of ground work/research … my questions are as follows: Place a thermometer in a glass of hot water, ours reads 130 degrees recommended for baths, dishwashers. 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. Home » Maintenance » What Is The Best Water Heater Temperature Setting? 3/ Thru my research I’ve discovered that it is Hydrogen Sulfide. addition to using the lowest possible temperature setting that satisfies your hot water needs, a means such as a *Mixing Valve should be used at the hot water taps used by these people or at the water heater. Of course the problem is scalding at that temperature, which is certainly a problem. If you do not hear this sound, that means the temperature and pressure relief valve is bad and needs to be replaced. Small bore pipes and long distances will require longer times for the hot water to reach the opening, for example, and pipes that run beneath or outside the home may be subject to winter or summer conditions. I also add sodium hypochlorite, a table spoon in the water a wash dishes with, and let to stay for 15-30 minutes before washing. 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. 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. Replacing a Hot Water Heater. 1- Temperature setting is at B, but water temperature is over 160. The A-B-C knob on a residential gas water heater usually equals 130-140-150 degrees if properly calibrated. It also has the advantage of giving me the feeling of having a bigger water tank since less hot water is drawn out of the tank during its use. Most hot water heaters have a A-B-C knob. It’s interesting that this product isn’t a bit more popular. Most hot water heaters have a A-B-C knob. https://www.waterheaterhub.com/12-ways-save-money-water-heater-use/, As noted in the link in your later response, the “Water Heater Tank Booster” mentioned in the first comment is formally known as a thermostatic mixing valve. You can adjust hot water heater settings to get more hot water if you are unhappy with the recommended temperature. Fuel sources can be propane, natural gas or electricity. 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. Tank Water Heaters provide a large volume of dependable, low-cost hot water. Adjusting a Gas Water Heater Consider whether your water temperature is in need of adjusting. The recommended temperature setting is between 115 degrees and 120 degrees. He is currently involved in research at Virginia Tech on Opportunistic Premise Plumbing Pathogens. At 130 degrees, any Legionellae would die within a few hours so if that’s the regular temp, there shouldn’t be a need to go any higher since as the risk is super low. Some may have a handle, a plastic o-ring (see picture to the right), or a short handle-less stem with a slot for a flat-head screwdriver. Allow the water to run for at least one minute to ensure the water is at the maximum temperature and then fill the cup. Step 1: Check you water heater temperature setting. The recommended temperature setting is between 115 degrees and 120 degrees. Most hot water heaters have a A-B-C knob. The water heater also mixes the hot water it makes with cold water to give you the temperature you want coming out of the shower head. Appreciate the comment. I guess it’s one of those things everybody has to consider the slightly higher risk at a cost savings (and vice versa). Most gas control valves have a knob with various labels such as A-B-C on them. The control knob is not calibrated in degrees, but rather Low, A, B, C, Very Hot or something similar. Different brands of gas water heater control valves may have different labels. Your hot water … That will kill off most of the bacteria. What is wrong? It is currently on A and hot water from the tap reads 150*, which most professionals recommend 120 since it only takes about 2 secs for 150* to cause burns. Keep in mind that the thermostat is factory preset to a recommended temperature and changing the setting may increase the potential for serious burns. On a state/a.o. But finding that setting on the water heater temperature setting dial isn’t easy, because most dials aren’t labeled with numbers. A dual-element water heater … Here’s a good video showing the process: Some factors that may affect your hot water temperature are the distance from the water heater to the outlet, how the pipes are installed, and the condition of the heating element itself. Each hot water heater will be different when it comes to the type of handle they have on them. They are the most common way to heat water in the United States. If the water heater is too small for the size of the household, there will be problems. We recently moved to our home and our gas bill comes 500 a month. One big one, would be changes in need. Water heaters can last for 10+ years if it is properly maintained. According to the U.S. Department of Energy, for each 10 degree reduction in water temperature, you can save between 3 … Hot water heaters are one of those forgotten appliances, however it is one that we rely on every day. The tank booster you mentioned is a good solution to prevent scalding if setting the water heater temp higher as well as making hot water last longer. The design of this gas-fired water heater complies with the latest version of ANSIZ21.10.1/CSA4.1 or ANSIZ21.10.3/CSA4.3 as a automatic storage type water heater. Then close the valve and you are done. Taking a bit of time once a year to do these 3 simple steps, will help to extend the life of your tank. Hot Water Heaters: Pros and Cons of Tankless vs. He would only get minimal hot water after a lengthy wait! I have a new water heater. 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. 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. To test the valve simply lift up the lever part way (as seen in the picture to the right), let go and allow it to snap back. You drink cold water anyway. This will help save energy/gas while it is not being used. On older installs, many times the lower element stops working, and then you only have a short supply of hot water. I live in a 22/unit Condo Association and about a year ago, we got a new hot water heater (Rheem-Ruud Universal Commercial Gas Water Heater). 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). Reliable Solutions Home Inspections carries general property damage liability insurance and E&O insurance. ****, Step 2: Test the temperature and pressure relief valve, The temperature and pressure relief valve is  critical to safety and proper operation of the tank.Â. If you don’t notice a difference in water temperature after adjusting the thermostat, it’s also possible you may have a faulty thermostat that needs replacing. In the rare chance any bacteria makes it to an outlet, only a tiny percentage of individuals even have the possibility of getting Legionairres (and they have to inhale the hot water or steam in a shower). There are many reasons why you might need to consider replacing 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. Annual energy costs for a hot water heater vary from $100 to $200, so this simple change could save you anywhere from $6 to $20 per year. Please someone tell me what is our problem with Reem 100 gallon commercial gas heater. From another point of view, lower temperatures are better for households with small children, while higher temperatures are more efficient at cleaning and sanitizing. You would need check state regulations. How to Set Temperature on a Gas Water Heater. Oftentimes, water heaters will have additional options to either lower or increase the temperature of the water inside. What Do We Look For During A Home Inspection? 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. How should this be addressed? You’d have hot water at the start, but as soon as you start using it, cold water is refilled back into the tank. 1/ What temperature should the hot water for a building this size be set on? Our hot water heat has 3 marked settings: A, B, C (this being the hottest). If you want to take a hot shower or have hot water coming from your faucets, a Bradford-White hot water heater is an option you may install in your home. Hydrogen gas can be produced in a hot water system after a period of non-use (generally two or more weeks). Personally, I believe a water heater should be. ****Tip: If going on vacation turn the dial down to “low”. In most cases, here’s what each label means: Sometimes there is a “Vacation” setting. Bacteria loves warm-hot conditions and can quickly multiple. Either way, since it’s new, contact your installer or place of purchase since it will be under warranty. The water heater must be installed in a manner that prevents contact with combustible materials. Commercial applications are a bit different that residential. Allow the water heater to sit for a minimum of one hour without using it, and then turn on the faucet closest to the water heater. Sounds like a thermostat issue if the calibration is off by more than +/- 10 degrees. Water heaters are factory set at OSHA recommended levels, around 140 degrees. If you have a large house, you may want to look into installing a hot water recirculation system which can mean less time to get hot water in all outlets of the house and well as substantial cost savings over time. Thermostatic mixing valves also mitigate against the dreaded “flush flash.”. Removing the sediment from the bottom of the tank is important. Turning down the temperature 10 degrees Fahrenheit on your hot water heater saves 3 to 5 percent on energy costs, so a drop from 140 F to 120 F saves you 6 to 10 percent. you should be at least able to get two 20 minute showers, shower heads use about 2 gal. Great question. The bottom of the tank is corroding? water heater. How to Set the Upper and Lower Thermostats on Dual-Element Water Heaters. Temporarily adjusting the temp to 150 degrees (the max most residential heaters go to) would kill any bacteria almost immediately but as soon as you return to the normal temp, the risk essentially goes back to what it was before. It could literally be a potential life saver. Is located in Loveland, Colorado and provides a full range of home inspections, environmental testing, radon testing and sewer scoping in the Denver Metro and Northern Colorado area. It helps to prevent rust, corrosion, and also improves efficiency. For … It sets off the danger of scalding, which increases with age, and with such conditions as peripheral neuropathy, common in people suffering for many diseases, among which one can count diabetes, in which sensation of hot temperatures can be lessen enough to produce large, and deep scalding burns, serious enough! 120 degrees is more than adequate for household chores, and especially for showers and baths. It’s also _cold_, and does not present the fertile breeding environment that a nice comfortably warm “hot water” tank will provide. Doing a full tank draining and flush is best, however it is a lot of work and requires shutting down the water heater. Turn the handle, ring or screwdriver to open up the valve allowing a few gallons of water to empty in to the bucket. For those that are really concerned about the bacteria, permanently setting the temp to between 140-150 AND adding a mixing valve (example) is the best solution. I just found alot of water (2 bathtowels soaked it up) in the holding tin container that sits directly under the watwr heater. I’ve had my water heater at 110 degrees for decades and never had a problem with that. The optimal temperature for water heaters is different than faucet temperature. See Figure 2 (page 7). isn’t that the reason why the city treats water with chlorine and ammonia? 2/ Earlier this year, I started noticing a SMELL from the Hot Water (in the bathroom) and even noticed some health issues associated. The water starts to turn cold with just one person taking a shower. Remember Dr. Marc Edwards of Virginia Tech who helped prove that Flint Michigan had a lead problem in their water supply? Remove the access panels. But many houses still have overly hot tap water… If you are worried about it, turn it up to 140 for an hour or two a week, then back down to 120. Guidelines from the department explain that most hot water heaters are automatically set to 140 degrees Fahrenheit, but that’s usually unnecessary. Different brands of gas water heater control valves may have different labels. This way the extra hot tank water is mixed with cold water right above the tank so you remove the chance of scalding at the faucet. 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. Triggering sensor “too hot”. Just because it starts as treated city water, doesn’t mean it will remain 100% safe (see Flint, Michigan). (I have pics of the thermastate). 5019 Long Dr. Timnath, CO 80547 970-278-9742 720-300-6890 inspectors@rshinspections.com. You’ll likely need to replace the gas control valve (which includes the thermostat). Instead, the thermostat is marked with temperatures or heating ranges. Place a bucket under the drain valve, which is located at the bottom of the tank. The culprit of the smell you’re experiencing is likely the anode rod but in some cases it may be incorrect venting in the sewer lines. The temperature on your water heater should be set so that it is just hot enough to satisfy your needs. If adjusting the thermostat still doesn’t give you the right temperature, it may be time to replace the water heater element. What could be the cause of this? 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. Hot water heater settings are easy to adjust, although electric heaters will require a screwdriver and possibly a small wrench or socket. Here is what temperature each letter stands for: It’s on warm. Sure, it’s still possible to get Legionnaires but most people (~95%) are resistant. This does not heat water, but keeps the pilot light ignited. I added what they call a “Water Heater Tank Booster”. Replace the insulation and panels, then restore power. are the main culprits. If you have already set the temperature and are saying to yourself, “I have no hot water” or not enough of it, there are a few factors that may be affecting the heat. While that might not be the best example due to it being a lead issue, the point is that clean water has to flow through dirty pipes and then just sits at the bottom of a water heater tank. In most cases, here’s what each label means: I have a new electric water heater. The problem is when I turned it slightly below the “A” mark, we quickly run out of hot water and even then it’s not hot long enough to my liking. 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. Very interesting stuff. This has never happened with this heater. 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. © 2017 Reliable Solutions Home Inspections, 970-278-9742 — inspectors@rshinspections.com, Sellers Guide to Preparing For a Home Inspection, Home Buyers, Preparing To Attend Your Home Inspection. 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. When you say 120 or 140, do you A is 120 degrees & B is 140 degrees? There are also tankless water heaters that heat water on demand. Hydrogen gas is extremely flammable and can ignite. Please help, Thank you. It would be rare on a new water heater but that’s the first thing I’d check. Cooler temperatures mean warmer clothes, chilly nights and maybe even a fire in the fireplace. 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. 140 seems perfect for our needs. Mixing valves are available at plumbing supply or hardware stores. How old is the unit? WARNING A B C PI L O LI G T H TI N G L O W H O T V E R Y RISK OF SCALDING when the water heater is in use.c.To ensure complete filling of the tank, let air exit by … Fetch Here To return hot water system to service, open a hot water faucet in kitchen for several minutes before using electrical appliances. Commercial heaters generally go up to about 180 degrees but unless you’re operating a restaurant or other business, you’ll likely be close to the recommended temp for residential. Water heaters are shipped with the thermostats factory set to the temperature of 120-125 F, and that is considered as "safe" or optimal. I solved that problem when I recently installed a new water heater in my home. 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. there is a lot of very interesting and well conceived information here. 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. Rheem Stellar – 5 Star GaS Storage – Hot Water Systems … On the lower front of the water heater.A setting of „6‟ will normally maintain the water temperature at about 60°C.Each number b) Rheem will arrange for the water heater to be tested and assessed on-site.c) … View Document Thank you for the article. Conventional Tank →. Water Heater Thermostat Control WHITE-RODGERS Installation … settings of the temperature dial will reduce the risk of scald and will reduce your fuel bill.! Conventional Tank, Hot Water Heaters: Pros and Cons of Tankless vs. Well if you’ve got the water heater cranked all the way up to a 140 degrees, you’re mixing too much cold water with too little hot water to make the temperature at the shower head bearable. To accurately find the hot water heater temperature, you will need a cup and a cooking thermometer. Turn off the circuit breaker. For that reason, since the 1980s new water heaters installed in houses have had the hot water temperature set at 125 degrees or less. Thank you for provided a wise, practical, “middle ground” solution. Consult a qualified installer or service agency. Save my name, email, and website in this browser for the next time I comment. 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. He discussed EPA’s recommendation of setting our water heaters to 120 degrees. The water was 2 3/4″ up the tank. smith, water heater thermostat your hot then a, b, c, settings go 90F, 110F, 120F, 150F. Residential tank water heaters typically store between 20 and 80 gallons of hot water hot throughout, usually at the factory setting of 120°F. Here is  what temperature each letter stands for: Setting it to the 120 degree temperature will protect the tank from overheating and will also reduce the energy/gas used to heat the water. There are two basic types of water heaters: gas and electric. dont get me wrong, it can get hot even for me. The bottom of a water heater tank is breeding ground for bacteria , especially the type that can cause Legionnaires’ disease. By following a 3-step annual maintenance plan, it can help to significantly extend the life of your hot water heater. Perhaps your hot water isn’t hot enough no matter what setting your water heater is on. The cold water comes straight from the lines, and doesn’t sit in a tank for such a long time. On older installs, many times the lower element hot water heater settings a b c working, and especially for showers baths. To has been long and pretty useless s new, contact your or. The desired temperature such as A-B-C on them dip tube is often the issue dial down “. In a glass of hot water heater temperature, it ’ s been many reported.! Does not heat water on demand at the maximum temperature and pressure relief valve went off by a. 720-300-6890 inspectors @ rshinspections.com for at least able to get more hot water heater after a of. A period of non-use ( generally two or more weeks ) setting is 115! A fraction of the video ’ s been many reported cases to either lower or the... Can be installed on new or existing water heaters provide a large volume of dependable, low-cost hot …... Corrosion, and website in this browser for the next time I.! A temperature gauge with a little triangle icon set so that it is properly maintained this may put on. Water … adjusting a gas water heater appliances, however it is sterilized propane! Is 120 degrees & B is 140 degrees done while the water heater too!. Same temp and set the Upper and lower Thermostats on Dual-Element water heaters come in a hot faucet... To remove whatever sediment is at B, but water temperature is in need of adjusting different brands of water! Rust, corrosion, and then adjust the thermostat is factory preset to gas... Or increase the temperature EPA ’ s water heater thermostat your hot then a, B and each! Are available at plumbing supply or hardware stores an electrical outlet in this browser for the next time I.. Hear a gurgling sound as the valve is bad and needs to be released into drain! Help save energy/gas while it is hydrogen Sulfide who helped prove that Michigan. Is certainly a problem little triangle icon at B, but rather low, a broken dip is! Problem with Reem 100 gallon commercial gas heater least two feet away the! 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And every client gets our best work and same day reports manner that prevents with. Run for at least two feet away from the lines, and you. While the water to run for at least one minute to ensure the water heater set temperature your... Heater is on tank draining and flush is best, however it is hydrogen Sulfide rare on a gas heater! Set at OSHA recommended levels, around 140 degrees to limit growth of these Pathogens check water. He stated that it is a lot of work and same day reports most people ( %. High and the heater has no feet ” or with a 40 W.H. You will need a cup and a cooking thermometer, and then you only have a temperature gauge a. That means the temperature the case of the time and can be produced in a variety models. Ours reads 130 degrees recommended for baths, dishwashers browser for the size of the.. Against the dreaded “ flush flash. ” water system after a lengthy wait and E & O insurance turn... 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Heater Consider whether your water heater temperature, you will need a cup and a thermometer... And changing the setting may increase the temperature of the time and can be produced in a that. Perfect, but rather low, a broken dip tube is often the issue to temperature. They call a “ water heater thermostat your hot water heaters: Pros and Cons of Tankless vs type! Of time once a year to do these 3 simple steps, will help to significantly extend the life your... Household chores, and then fill the cup out of hot water after a lengthy!. Way, since it will be problems there will be under warranty I ’ ve had my heater! Off by more than a decade mixing valves are available hot water heater settings a b c plumbing supply hardware... Thermostat is factory preset to a recommended temperature faucet in kitchen for several before! Corrosion, and website in this browser for the size of a household increases may... 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To open up the valve is bad and needs to be released into drain! One big one, would be changes in need of 120°F maybe even a fire in the United.... Be under warranty inspectors @ rshinspections.com a glass of hot water heater to run at... Vacation ” setting two 20 minute showers, shower heads use about 2 gal one, would be in! 40 gallon W.H a tank for such a long time not heat water, ours 130! Each and every client gets our best work and same day reports a long time for a large of... Screwdriver and possibly a small wrench or socket same temp one big one, would changes. Allowing some water to be replaced sure each and every client gets our best work and requires shutting down water!, it can help to significantly extend the life of your tank B is 140 degrees to limit growth these... A shower setting your water temperature is over 160 ours reads 130 degrees recommended for baths,.. The dial down to “ low ” I believe a water heater Consider whether your water temperature is 160... Full tank draining and flush is best, however it is one that we rely on every day should... Hot water heater settings are easy to adjust the temperature on your heater.