Domestic Hot Water Heater Temperature

Test your water temperature.

Domestic hot water heater temperature. Set the temperature of the water reservoir hot water heater to 140 f but deliver the water at 120 f by way of a mixing valve. Hot water water at a temperature greater than or equal to 110 f 43 c. Not only will setting it to 120 degrees meet most. The occupational safety health administration osha recommends water heaters be set to at least 140 degrees fahrenheit 60 degrees celsius to minimize the growth of legionella and other.

Best hot water mixing valve for hot water tank. Guidelines from the department explain that most hot water heaters are automatically set to 140 degrees fahrenheit but that s usually unnecessary. 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. No there is no code language addressing a minimum domestic hot water storage temperature.

However there is less danger of bacterial growth in smaller domestic hot water tanks. Elderly homeowners or those with small children may want to keep the temperature at 120 degrees. Avoiding burns for vulnerable people. Consequently osha recommends the minimum water heater outlet temperature in residential systems to be set at 130 degrees f to produce a faucet temperature of at least 120 degrees f.

Recommended temperature settings water heaters are factory set at osha recommended levels around 140 degrees. If you drop the temperature down to 120 degrees fahrenheit energy experts claim that you could potentially save hundreds of dollars in a lower energy consumption. The standard temperature for many water heaters is 140 degrees fahrenheit. Inhaling water vapour contaminated with legionellosis bacteria causes pneumonia like symptoms that can kill you if left untreated.

Homeowners with a dishwasher that does not pre heat the water may want to set their water heater to 140 degrees. This does not mean it is good design to store the hot water at 110 f.