Why I Set My Tankless Water Heater’s Temperature to 100 °F

Why we used to keep water very hot

Storage hot
water heaters are usually set to 120 °F and even to 140 °F. This can look weird
to anyone who knows what sort of temperature 120 °F is. Water that is so hot
will scald your hands in seconds so you have to mix it with cold water all the
time. The question is why heat the water to such a high temperature and then
add cold water to it? You have to do it because storage water heaters can run
out of hot water and they probably will run out of water very often if you set
the temperature to a low temperature. This is not the case for tankless water

One of the
things I love about tankless water heaters is that they never run out of hot
water so do not have to tell your water heater to overheat the water so that
you have more hot water stored for urgencies. That means you can set it to heat
the water to the temperature that you really need.

100 °F is the temperature you need

Setting the
tankless unit to 100 °F is a great idea for a number of reasons. This
temperature is quite hot and very suitable for washing the dishes or your hands
or showering. It will effectively clean stuff and remove soap but it will
almost never scald you. Plus, you do not have to tamper the temperature by
adjusting both hot and cold water taps and you can just open the hot water side
and start using the water. One instance where you might want a higher
temperature is using appliances such as the dishwasher and the washing machine.
In all other cases, there is no point in rising to water temperature to
dangerous levels.

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