ᐅ Hot water set to 60°C due to risk of Legionella bacteria

Created on: 29 Jul 2021 08:28
P
Pädda
Hello.
It is often recommended to set the hot water temperature to 60°C (140°F) on the heating system when using a boiler (in our case, a 300L (79 gallons) unit with gas heating) as a precaution against Legionella bacteria. Since my family’s health is the top priority, I don’t mind that. What I don’t understand is whether the hot water should be maintained at 60°C (140°F) continuously for 24 hours, or if it is recommended to turn off the hot water preparation at night using a timer. If you switch it off at night, it seems somewhat inconsistent because the water would cool down again and drop below the recommended 60°C (140°F).
Do you have any opinions on this?
4
4lpha0ne
20 Aug 2021 11:23
Our shower times are quite predictable, and we make sure the little one doesn’t spend too long playing inside.
Therefore, currently a slight heating increase in the morning and a stronger one in the evening works well. This can be easily adjusted using the respective hysteresis settings for each stage.
Regarding Legionella, there is a set periodic temperature increase.