Too warm bedroom

  • Erstellt am 2021-02-04 10:16:57

Janbaut

2021-02-04 10:16:57
  • #1
Hello,

we moved into our new build exactly one year ago. We have a KFW55 house with a geothermal heat pump, triple glazing, a ventilation system, and of course underfloor heating. We are very satisfied with the house, but only one thing bothers me, and that is the temperature in the bedrooms. It is always between 20 and 22 degrees (using different thermometers) even though we do not heat there. On the one hand, it is too warm for me and I would like it cooler, and on the other hand, I am surprised about the temperature. Of course, one could sleep with the windows open, which we do quite often, but I am not really satisfied with this solution.

The thermostat in the room is set to 0 degrees. Even the valves for the bedrooms are all turned off. Only the bathroom on the first floor is heated. However, the floor in the bedroom feels noticeably warm in some places. Of course, we have contacted the sanitary company, and they were here and said that the valves are closed and that it cannot be... but I just cannot shake the feeling that the room is still being heated. What do you think? Could it be that the room is only warmed by the heat from the living space below (kitchen/dining and living room)?

Do you have any ideas what it could be due to? Or is it simply like this with such a configuration, room below being heated, good insulation of the house, that the bedrooms are just warmer than they used to be?

Thank you for your advice!
 

FloHB123

2021-02-04 10:31:18
  • #2
Just for comparison:

We live in an end-terraced house, built in 1997.
The radiator in the bedroom is usually in night mode, so basically off.
We sleep with the window open and still always have between 19 and 21 degrees in the room. Even at outside temperatures around 0 degrees. Obviously, if we close the door during the day, the room doesn’t get that warm, but it only really gets cold if we fully open the windows.

What’s against ventilating and leaving the window open at night?
 

Zaba12

2021-02-04 10:45:48
  • #3
Yes, the probability is quite high that this is the case. How high is your flow temperature? How warm is it in the bathroom? Both must be quite high in order to reach 22 degrees in the bedroom by heating only the ground floor and the first-floor bathroom. My suspicion is simple: you are just using your underfloor heating with the heating circuit valve incorrectly. Also, you need to forget the desire for the bedroom to be 18 degrees and the bathroom 23-24 degrees.
 

Lumpi_LE

2021-02-04 10:59:35
  • #4
That is quite normal for a kfw55 house. Just use thinner ceilings.
 

Janbaut

2021-02-04 11:03:01
  • #5


Of course we do air, but the room really heats up quickly again. An open window at night has several drawbacks. Besides the light (because then the blind is raised a bit) but especially the noise. Somehow the wind seems to be directed at our window and because of that the blind rattles quite a bit. Also, I don’t have a nine-to-five job and it sometimes happens that I come home late / at night and would definitely like to sleep longer (until 9) in the morning. However, it is simply too loud here for that.
 

Zaba12

2021-02-04 11:03:11
  • #6
...and please take a look at how many compressor starts your heat pump had in the year.
 

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