How Hot Should Water Heater Be?

Is 140 too hot for water heater?

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 microorganisms.

Is 130 too hot for water heater?

Professionals recommend keeping your water heater set at a temperature between 130 and 140 degrees Fahrenheit. Any higher, or lower, could actually be dangerous for you and your family. While turning the temperature up higher can result in burns, turning it lower than the recommended setting can also be dangerous.

Is 150 too hot for water heater?

The recommended setting for household water heaters is not 150 degrees, but slightly less _ 140 degrees. Water temperatures higher than 140 degrees can burn the skin and are particularly dangerous for young children and the elderly. People with poor circulation can scald themselves without knowing it.

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What is the best temperature for domestic hot water?

A domestic hot water cylinder thermostat should be set at 60-65ºC. This is high enough to kill off harmful bacteria such as Legionella. If you set the thermostat much higher than this the water that comes out of the taps will be too hot and there’ll be a risk of scalding.

Can 140 degrees burn you?

Most adults will suffer third-degree burns if exposed to 150 degree water for two seconds. Burns will also occur with a six-second exposure to 140 degree water or with a thirty second exposure to 130 degree water. Even if the temperature is 120 degrees, a five minute exposure could result in third-degree burns.

Is 50 degrees hot enough for hot water?

Water that is 57 degrees can cause a major burn within a few seconds. This highlights just how dangerous water can be over the 50 degree temperature mark even if it is only a few degrees. In the case of how hot is too hot, the absolute maximum should be 50 degrees for every appliance located in a bathroom area.

Is 135 too hot for water heater?

The American Society of Sanitary Engineering recommends that hot water tanks be set from 135 to 140 degrees, to inhibit the growth of Legionella bacteria, with the installation of anti-scald devices and tempering valves to prevent hot water injuries.

Can bacteria grow in a hot water heater?

There are a few bacteria that are likely to grow in your water heater, but the most common is legionella. Legionella is the bacteria that causes Legionnaires’ disease. You can get Legionnaires’ disease by inhaling microdroplets of legionella-contaminated water. Legionnaires’ disease is a severe type of pneumonia.

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Is 125 too hot for hot water heater?

If you invest in one or more thermal protection devices to protect against overly hot water, the water heater could be safely set a little higher than 125 degrees. Most water heaters don’t have a thermostat control that is calibrated in such a way that you can just dial in 125 degrees.

How hot is too hot for water heater?

120 degrees Fahrenheit is the safety recommendation against scalding, but 140° is the common default setting. Most experts agree that anything below 120 degrees creates a risk for bacteria to develop inside your water heater from stagnant water, such as legionella that causes Legionnaire’s disease.

Does turning up water heater make hot water last longer?

Turn up the thermostat on the hot water heater. One of the easiest ways to make a hot shower last longer is by using less hot water while it’s at a higher temperature. To do this, turn up the temperature on the thermostat that’s attached to the hot water heater tank. Be conscious of other hot water in your home.

Should hot water heater thermostats be set the same?

The majority of electric water heaters have two thermostats: an upper and a lower, located under two control panels. To ensure your electric water heater works as efficiently as possible, you should set both of the thermostats at the same temperature.

Is 60 degrees too hot for water?

If your water is too hot, turn the dial toward the colder end of the scale. As a note, you should ideally set the temperature of the water between 60 and 65 degrees Celsius.

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