Hot water 60 degrees due to Legionella risk

  • Erstellt am 2021-07-29 08:28:25

Bookstar

2021-07-30 08:19:01
  • #1
Why should this be customary and what purpose should it serve? The tank keeps the water warm quite well. Usually, you do quite well with a hot water temperature of 50 degrees. You actually don’t need more. Legionella are not an issue in a single-family house. However, after 2-3 weeks of vacation, you should heat the water once to over 60 degrees and then briefly open all the pipes.
 

halmi

2021-07-30 08:49:42
  • #2
Usually, you set it how you like it personally; when the kids bathe in the evening, I don't feel like taking a cold shower the next morning.
 

debaser

2021-07-30 14:05:24
  • #3

Strictly speaking, you would then also have to open all the taps so that the 70° reaches all the hot water pipes.

I see it the way the majority does: usually unnecessary in a single-family house. I only heat my hot water to 48°C. And only during the day; overnight, maybe 2 to 3 degrees are lost – so much for the topic of cooling down.
 

Joedreck

2021-07-30 16:04:25
  • #4
Just as says, it is completely OK. And I would only turn on the hot water generation with a heat pump especially when hot water is needed. Otherwise, the hot water cools down a bit during the day and the heat pump immediately kicks in to replenish it, even though it's not necessary. Hot water with a heat pump is one of the most inefficient things.
 

kati1337

2021-07-30 16:58:53
  • #5
I am the same way - efficiency is all well and good, but I want to be able to shower hot at any time of day or night if I feel like it. Our hot water is always heated up. When the sun is beating down on the roof, we heat it a bit higher because that's more economical than feeding electricity back into the grid.
 

rdwlnts

2021-07-30 21:07:11
  • #6
60° degrees do not kill Legionella either but only make them more heat-resistant. So it’s pointless. Take a look at the pink forum. It’s full of that. So you can safely skip the Legionella program. Frequent water changes are usually sufficient. Personally, I rely on fresh water. That way, there is no stagnant warm water anymore. The fresh water heats fresh water in a flow-through process via a heat exchanger. But of course, it is a bit more expensive than a pure water storage.
 

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