Avoid legionella bacteria

Avoid legionella bacteria!

How to check the temperature in the hot water tank

• Choose a faucet that is located a good distance away from the hot water tank.
• Let the water run until it is as hot as possible.
• Fill a cup with hot water so that the cup is warmed up. Empty the cup again.
• Place a thermometer in the hot cup and refill it with hot tap water.
• If the water is above or below 50°C, adjust the temperature in the hot water tank. Check the system’s manual for how to do this. You can contact us and we can help you set up the installation.
• Wait a few hours before measuring again.

Therefore, the water in the hot water tank should be 55 °C.

The optimal temperature in a hot water tank is 55 ºC. The water is then approximately 50 °C when it comes out of the taps.

If the temperature is higher, you use an unnecessary amount of energy and the container will release limescale that can affect the container’s lifespan. If it is colder, it can provide good growth conditions for, for example, legionella bacteria.

How to check the temperature if you have a flow-through water heater
With a flow-through water heater, there is a significantly lower risk of legionella bacteria developing as there is not much stagnant hot water. It is always a good idea to check the hot water temperature as there is increased energy consumption if the hot water temperature is too high.

• 1. Choose a faucet that is located a good distance away from the instantaneous water heater.
  2. Run the water until it is as hot as possible.
  3. Fill a cup with hot water to warm the cup. Empty the cup again.
  4. Place a thermometer in the hot cup and refill it with hot tap water.
  5. If the water is above or below 50 °C, adjust the temperature in the installation. Check the system’s manual for how to do this. You can contact us and we can help you set up the installation.

The optimal temperature for tapping hot water is 55 ºC. The water is then approximately 50 °C when it comes out of the taps.

If the temperature is higher, you use an unnecessary amount of energy and produce limescale that can affect the lifespan of the installation. If it is colder, it can provide good growth conditions for, for example, legionella bacteria.