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> you can change the top end by lowering the temperature of your hot water heater. We have ours set at 120 I’m not sure that’s a good idea. 120F is in the dang
by Someone 4y ago
> you can change the top end by lowering the temperature of your hot water heater. We have ours set at 120
I’m not sure that’s a good idea. 120F is in the danger zone for Legionnaires' disease. https://en.wikipedia.org/wiki/Legionnaires%27_disease#Prevention https://en.wikipedia.org/wiki/Legionnaires%27_disease#Preven...:
“Keep water temperature either above or below the 20–50 °C (68–122 °F) range in which the Legionella bacterium thrives.”
- adamj9431 4y agoInteresting. On the other hand, when bringing a newborn home from the hospital, the take-home literature instructs new parents to turn the water heater down to 120 F to prevent risk of scalding.
- stdbrouw 4y agoI wouldn't worry about it. Almost every modern boiler will bump up the temperature to 60C / 140F once a week to prevent Legionnaire's, may even be a mandatory feature depending on where you live.
- exmadscientist 4y agoThe "right" way to do this is a thermostatic mixing valve at the water heater output. This lets you keep the tank at 150°F (or whatever) but the output gets mixed down to 120°F (or whatever). It also gives you an effectively-larger tank which can be very useful in certain cases. Of course, you might say, why not put the thermostatic mixing valve at or in the shower, which also works pretty well!
- kps 4y ago> the 20–50 °C (68–122 °F) range That's clearly a case of conversion results being given unwarranted precision.