https://www.googlenestcommunity.com/t5/Nest-Thermostats/Preventing-Legionella-and-setting-of-hot-water-thermostat-setting/m-p/578552#M115061 <P>Hi</P><P>I know that the Nest Thermostat will automatically heat hot water to kill legionella bacteria. I don’t understand how this links to the hot water thermostat setting. If this is 60C plus then Legionella will be killed when the water is heated. If the thermostat is set less than 60C, say 50C, then the Nest won’t be able to heat the water beyond 50C.</P><P>so it looks like the legionella protection also requires the hot water thermostat to be set to the correct level otherwise the Nest legionella protection won’t work.</P><P>Can you confirm if I have understood this correctly?&nbsp;<BR /><BR />Thanks</P><P>&nbsp;</P><P>&nbsp;</P><P>is this&nbsp;</P> Sun, 21 Jan 2024 16:51:39 GMT Stuntdouble100 2024-01-21T16:51:39Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Preventing-Legionella-and-setting-of-hot-water-thermostat-setting/m-p/578552#M115061 <P>Hi</P><P>I know that the Nest Thermostat will automatically heat hot water to kill legionella bacteria. I don’t understand how this links to the hot water thermostat setting. If this is 60C plus then Legionella will be killed when the water is heated. If the thermostat is set less than 60C, say 50C, then the Nest won’t be able to heat the water beyond 50C.</P><P>so it looks like the legionella protection also requires the hot water thermostat to be set to the correct level otherwise the Nest legionella protection won’t work.</P><P>Can you confirm if I have understood this correctly?&nbsp;<BR /><BR />Thanks</P><P>&nbsp;</P><P>&nbsp;</P><P>is this&nbsp;</P> Sun, 21 Jan 2024 16:51:39 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Preventing-Legionella-and-setting-of-hot-water-thermostat-setting/m-p/578552#M115061 Stuntdouble100 2024-01-21T16:51:39Z https://www.googlenestcommunity.com/t5/Nest-Thermostats/Preventing-Legionella-and-setting-of-hot-water-thermostat-setting/m-p/580967#M115513 <P>How this feature works is explained here:</P> <P><STRONG><A href="https://support.google.com/googlenest/answer/9256656?sjid=3443137876059243744-EU" target="_blank">How the Nest thermostat helps prevent Legionella bacteria - Google Nest Help</A></STRONG></P> Sat, 27 Jan 2024 14:46:23 GMT https://www.googlenestcommunity.com/t5/Nest-Thermostats/Preventing-Legionella-and-setting-of-hot-water-thermostat-setting/m-p/580967#M115513 David_K 2024-01-27T14:46:23Z