The Optimal Water Heater Temperature Setting

Posted by on Jan 26, 2014 in Water Heater Repair Salem Oregon

There are diverse views on exactly what is the finest temperature level at which to set ones water heater. Water Heater Repair Salem Oregon will be sharing a few of the various views with particular proof from those sources in order for one to make his/her own decision on the topic.Water Heater Repair Salem Oregon

First off, the default setting most water heater producers have their tanks set at is 140 degrees. If you have actually never examined this already, that could be what it is set at. Likewise, it can be difficult to know for sure what the temperature setting is since many times the temperature level dial does not have actual degrees written on it, simply warm, hot, really hot … something to that end. Some people feel they are pre-set at a higher temperature so it feels excellent to have a great deal of hot water – kind of like trying to create good brand name awareness in customers.

In terms of energy cost savings, by turning a water heater down from 140 to 120 degrees, it will conserve in between 6 to 10 percent of energy usage. That equates to in between $6 to $20 a year in many cases.

Let’s begin with the probably the most popular source, the U.S. Department of Energy. They recommend a setting of 120 degrees. The link with their website above offers a great deal of excellent details on ways to decrease ones hot water usage and expenses. It is for sure worth a read.

Now for the health risks of too low of a temperature setting. It can be concluded that Legionella bacteria has the optimal growth range in between 68 to 122 degrees. Treehugger states that “25 percent of all water heaters have differing levels of Legionella bacteria contamination.”

According to The National Center for Biotechnology Information: “There are two opposing risks when it comes to water temperature inside domestic water heaters; exposure to Legionella, the bacteria responsible for Legionnaires’ disease (pulmonary legionellosis), and the risk of scalding.” (read more…)

Legionella bacteria triggers a form of pneumonia and is passed to human beings when one inhales water contaminated with the bacteria – usually in showers, whirlpool baths or even a/c systems. Drinking the water is generally ok. It is an issue with having the germs get in ones lungs.

The Centers for Disease Control and Prevention estimates 8,000 to 18,000 Americans contract the illness annually. Five to 30 percent of the cases are deadly.

According to the Occupational Safety & Health Administration, here are some of the factors that can increase the risk of getting the disease:

  • Organ transplants (kidney, heart, etc.)
  • Age (older persons are more likely to get disease)
  • Heavy smoking
  • Weakened immune system (cancer patients, HIV-infected individuals)
  • Underlying medical problem (respiratory disease, diabetes, cancer, renal dialysis, etc.)
  • Certain drug therapies (corticosteroids)
  • Heavy consumption of alcoholic beverages

Cases to not have the water heater temperature level set at 140 degrees would be if there are children in the residence or possibly with elderly individuals too. The danger of being burnt if the faucet was totally on hot water can be too great. Undoubtedly, anybody living in the house that is at danger of contracting Legionella Disease need to have it set at 140.


So choose if there are any issues of individuals burning themselves if the water temperature level is too hot. Also, be mindful of any individual who has issues of contracting Legionella Disease. Given that the yearly cost savings of turning the temperature level down is just about $20 the majority of the time with the average house’s hot water use, it could be a great option to keep the temperature above 120 degrees just for the wellness related benefits; nonetheless, Water Heater Repair Salem Oregon will let you make the call.

The following two videos demonstrate how to adjust the temperature on both an electric and a gas water heater in case you are uncertain the best ways to do so.

How to Change the Temperature on an Electric Hot Water Heater

How To Change The Temperature On A Gas Water Heater

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