Positioning of the air heat pump

  • Erstellt am 2022-11-01 17:30:17

wesson76

2022-11-01 17:30:17
  • #1
Hello everyone,

we are currently planning our semi-detached house and are dealing with the positioning of the outdoor unit of the air heat pump. The previous idea was to place the air heat pump in the carport (see picture, left dark gray area, to the left of the house). I think the air heat pump will take up about 1 width of the carport, making parking tight. In addition, the fan’s blower will be obstructed if the car is parked directly in front of it. The air heat pump will probably not be able to operate optimally.

Positioning in front of the house is also ruled out, as the path from the front door to the carport would not be open otherwise. Besides, I don’t necessarily want to see the thing every time I am standing in front of the house. The idea now is to place the air heat pump on the carport roof, see picture.

Questions:

    [*]4m to the left of the air heat pump is the window of the children’s room. Above the air heat pump is the bedroom window. Will it be audible with the window open when the air heat pump is running at full load? I think it should not be audible during normal operation.
    [*]Opposite the air heat pump is a side wall of a semi-detached house, about 7-8m away. The blower of the air heat pump will be directed at this side wall. On the air heat pump side, the neighbor’s house has the kitchen window on the ground floor and the bathroom window on the upper floor. The air heat pump should not be acoustically perceptible from there with the windows open either, am I correct?
    [*]Any other suggestions for positioning?

Air heat pump: Daikin Altherma 3 R 8kw (Dimensions (W x D x H): 884 x 388 x 740 mm)

a few additional key data about the air heat pump:

    [*]Sound pressure level heating (at 1 m distance): 49 dB (A)
    [*]Sound pressure level cooling (at 1 m distance): 50 dB (A)
    [*]Sound pressure level whisper mode 2/3 (measured at 3m distance): 47.5/34.5 dB(A)
    [*]Sound power level heating: 62 dB (A)
    [*]Sound power level cooling: 62 dB (A)
    [*]Sound power level whisper mode 2/3: 59/52 dB (A)


Thanks in advance.

 

Nida35a

2022-11-01 21:31:16
  • #2
Sound pressure levels are catalog values for new devices and optimal installation, not on a vibrating roof, not screwed to an exterior wall, not after 10 years of operation. It is no coincidence that the devices receive their own foundation and are decoupled from buildings as much as possible, with maximum distance from bedroom windows.
 

wesson76

2022-11-01 21:35:34
  • #3


The carport has a concrete roof. I strongly assume that the air heat pump will not be screwed to the exterior wall but placed on a foundation. However, I would need to clarify this exactly. The air heat pump blows away from the house wall towards the neighbor. For the DAIKIN, the sound pressure level at 3 m distance (directly in front of the air heat pump) is 47.5 dBA. The windows are each located to the side or above the air heat pump. Therefore, I expect even lower values.
Do you actually hear the fan inside the rooms when the windows are positioned as in the picture?

The other possibility would be to place it in the front yard, see picture. Here, I would need to install a cover so that it is not so conspicuous. Would you hear the air heat pump in this case with the kitchen window open?
 

kbt09

2022-11-01 21:59:37
  • #4
But it is just as noticeable on the roof of the carport.
 

Snowy36

2022-11-01 22:05:52
  • #5
So
you’d rather hear it in the kitchen than in the bedrooms …. At
first it will clearly catch your attention when it stands in the entrance, but later you won’t notice it anymore, it’s just a beginner thing …. I find these things acoustically annoying (I have one myself) … but
most of the time it works in winter and then you have the window closed … so put it in the kitchen where it bothers you the least
 

motorradsilke

2022-11-02 06:10:11
  • #6
Yes, I think so, with the window open you will hear it in the kitchen. But only very quietly, if you don't focus on it, you tune it out. What I definitely recommend to you: place it somewhere where you don't walk past. Much worse than the appearance and the noise is the draft that thing causes. Unfortunately, ours is directed exactly at our driveway, because everyone only talked about the noise and no one mentioned the draft. That really bothers us because we always get it when we park the car in the driveway.
 

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