We are planning our 40+ single-family house with a ground source heat pump and a ventilation system with heat recovery.
Some time ago, we visited a show home from a company that starts with "Finger" and ends with "Haus" (I'm not sure if the name can be mentioned). This show home also had a ground source heat pump with a ventilation system equipped. The air ducts for it were located on the floor, both on the ground floor and the upper floor. We already noticed the relatively loud noise from the ventilation downstairs, but when we were upstairs in a closed meeting room, it was really disturbingly loud.
I can’t quite describe it properly; it sounded like metal blowing air. Really hard to explain, but it was definitely noticeable and unpleasant.
On another occasion, we visited a show home by a company with "Streif Haus" in the name, but no extra suffix at the end. Here, however, there was a ground source heat pump with integrated ventilation. We absolutely couldn’t hear anything, not even with the door closed and my head (almost) right at the air outlet on the wall.
Actually, we have never heard the air in any of the houses; it was only noticeable in the first house mentioned.
Since we are considering the same system principle, albeit with different brands, I’m now a bit worried that it might be the same with us, and then this system would be turned off 100%, permanently! That’s simply not an option, not only when sleeping but in general.
Are there general things to consider in advance to reduce the "noise"?
Is the brand decisive?
Are the ducts included with the brand of the ventilation system, or do they generally come from somewhere else, so that one can be lucky or unlucky depending on what the builder installs?
I would appreciate your answers…
Best regards Dany250
Some time ago, we visited a show home from a company that starts with "Finger" and ends with "Haus" (I'm not sure if the name can be mentioned). This show home also had a ground source heat pump with a ventilation system equipped. The air ducts for it were located on the floor, both on the ground floor and the upper floor. We already noticed the relatively loud noise from the ventilation downstairs, but when we were upstairs in a closed meeting room, it was really disturbingly loud.
I can’t quite describe it properly; it sounded like metal blowing air. Really hard to explain, but it was definitely noticeable and unpleasant.
On another occasion, we visited a show home by a company with "Streif Haus" in the name, but no extra suffix at the end. Here, however, there was a ground source heat pump with integrated ventilation. We absolutely couldn’t hear anything, not even with the door closed and my head (almost) right at the air outlet on the wall.
Actually, we have never heard the air in any of the houses; it was only noticeable in the first house mentioned.
Since we are considering the same system principle, albeit with different brands, I’m now a bit worried that it might be the same with us, and then this system would be turned off 100%, permanently! That’s simply not an option, not only when sleeping but in general.
Are there general things to consider in advance to reduce the "noise"?
Is the brand decisive?
Are the ducts included with the brand of the ventilation system, or do they generally come from somewhere else, so that one can be lucky or unlucky depending on what the builder installs?
I would appreciate your answers…
Best regards Dany250
ypg schrieb:
That is done by the heating installer/plumber or someone experienced in that field. Now a really basic question: Do I get in contact with the heating installer before the house is built? I ask because the ducts for the ventilation should surely be taken into account during the wall assembly in the builder’s factory, right?
ypg schrieb:
You need to discuss that with the plumber. Why should you as a layperson influence that? For example, to make it quieter if that would be possible with minor measures (extra cost).
ypg schrieb:
Regarding your current questions, you will certainly find more information by searching the forum for “controlled residential ventilation.” I already did that, but unfortunately there isn’t much input about either system, except that Zehnder is supposedly better (which I’m not familiar with either).
AxelH. schrieb:
We have been running a Vitovent 300W continuously on level 3 for over 3 years now. Thanks to the valves in each room, you can hear absolutely nothing. Only the unit itself can be heard in the utility room, and it is very quiet in the garden where the exhaust air outlet is located. That sounds great!! Thanks for the feedback!
AxelH. schrieb:
The system was planned for us by the manufacturer. I assume you mean Viessmann, right?
R
RotorMotor19 Oct 2021 08:59Dany250 schrieb:
I was also active there, but unfortunately there isn’t much feedback on either system, except that the Zehnder is probably better (which I don’t really know). The units themselves are very simple. A motor, a fan wheel, a few bearings (often the weak point), and a heat exchanger.
So there is little potential for optimization.
Regarding bearing damage, just search online; I think you’ll find this issue with every manufacturer, and when it happens to you, it can get really noisy.
Otherwise, the planning matters more than the device itself.
Dany250 schrieb:
I assume you mean Viessmann, right?Yes, exactly. F.Haus often works with them because V. is located in the neighboring town of F. And no, we don’t have a house from F. After initial discussions, we decided not to proceed with them.@RotorMotor
Okay, thanks to you as well!
A bearing damage like that sounds unpleasant, but I think it’s easier to fix than a fundamental design flaw in the system throughout the entire house.
So it’s also interesting to know... Are Zehnder systems less sensitive in these respects?
@AxelH.
We’re also not working with F.Haus; as I said, it was mainly the ventilation that was very noticeable here. I’ve attached a picture of their equipment from the mentioned show home. I believe this is the heating system with integrated ventilation, not from V.
Okay, thanks to you as well!
A bearing damage like that sounds unpleasant, but I think it’s easier to fix than a fundamental design flaw in the system throughout the entire house.
So it’s also interesting to know... Are Zehnder systems less sensitive in these respects?
@AxelH.
We’re also not working with F.Haus; as I said, it was mainly the ventilation that was very noticeable here. I’ve attached a picture of their equipment from the mentioned show home. I believe this is the heating system with integrated ventilation, not from V.
Dany250 schrieb:
@AxelH.
We are also not planning with F.H., as I said, the ventilation was particularly noticeable here. I attached a picture of their system from the mentioned show home. I believe this is the heating system with integrated ventilation, and not from V.That's correct, this is not from V. And the crate of beverages shows me that you did not visit the show home exhibition at F.H.'s headquarters but were in the south of the country. Here in Central Hesse, F.H. and V. have a very good reputation. In their structurally weaker region a bit further north, they are among the largest employers. And at least from V., I know that they are not only very active as a sponsor in winter sports but also highly engaged in social causes.Similar topics