Right Temperature for Water Heater

Right Temperature for Water Heater
November 9, 2015 Lorelie

Next to the pleasures of sinking into a hot bath or indulging in a soothing shower, the heat level you set the water heater could possibly straight affect your health in an unsuspected and undetectable way. You see, unmoving water into water heaters, specifically those working numerous units in homes or old divided buildings, as well as the connecting piping system from heating unit to taps can end up being breeding grounds for a plethora of pathogens. Obtaining Legionnaires' disease- a type of pneumonia brought by stagnant water- is quiet troubling. So what is the best temperature should we set our water heating unit?

Certainly there are two main and opposing risks:

  • Extremely high, and clients get heated
  • Too low, and you run the risk of virus, specifically Legionella, that causes legionellosis (Legionnaires' disease)

Minimum Temperature

According to the note Legionella and the prevention of legionellosis, located at the World Health Organization website, temperature influences the survival of Legionella as follows:

  • 32 to 42 ° C (90 to 108 ° F): Perfect growth range
  • At 48 to 50 ° C (118 to 122 ° F): Can survive but do not multiply
  • At 50 ° C (122 ° F): 90 % die in 80-- 124 minutes, relying on strain
  • At 60 ° C (140 ° F): 90 % die in 2 minutes
  • bove 70 ° C (158 ° F): Legionella dies practically immediately


Most current-model dishwashers feature a minimum need of 49 ° C (120 ° F). Many get heating systems and will heat the interior as required. Dishwasher detergent changes, but "operates finest between 50 and 60 ° C" appears to be a fairly typical statement. If all yours is older you may want to inspect specifications. There is additionally cold-water detergent on the market that works at basically any temperature.

Maximum Temperature

The Consumer Product Safety Commission (CPSC) recommends setting to 49 ° C (120 ° F). Young children are at much higher risk because their skin is thinner. A number of people, especially the elderly, are at higher risk because they may be less delicate and slower to relocate away from scalding water. Setting too high can scald someone making use of the water. This is particularly easy because when you initially open the tap, the water in the pipes has cooled down some, and so its temperature level will rise (possibly dramatically) when the water from the tank arrives at the point of use.

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