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
Dany250 schrieb:
A quick basic question. Do I get in touch with the heating technician before the house is built? I’m asking because the ventilation shafts should probably already be planned when the walls are assembled in the builder’s factory, right? No, you generally don’t have contact during a general contractor build. But the specialist will know what to do—you’re not designing the heating system yourself, and your house isn’t the only one being built anyway. 😉
O
Oetzberger19 Oct 2021 09:50ypg schrieb:
But the professional will surely know -Especially in the field of heating and ventilation, this statement is extremely riskyOetzberger schrieb:
This statement is extremely risky, especially in the field of heating and ventilation.Not if I am a layperson and want to build with a general contractor. Otherwise, it is better to work with an architect, so you can consult the expert thoroughly in advance.ypg schrieb:
...it’s probably better to build with an architect so you can ask the expert questions in advance.Most architects are more like amateurs when it comes to technical aspects.
That’s why they need structural engineers for things like statics.
Architects would definitely not be my first choice regarding the technical aspects of construction.
These are fundamentally different ways of thinking, of course...
I believe what ypg meant is that as a layperson, I really don’t have much say because I have no expertise in the subject. In that respect, he is absolutely right! Nevertheless, I am gathering information and small pieces of knowledge here, which I can later bring up (whether with the heating engineer or the house builder) when it comes to planning. Maybe that will already help to spark some ideas.
In any case, during my next conversation with the house builder, I will ask how their planning process generally works. I will continue to share updates here, and hopefully (at least for me, since this is my thread) something useful will develop that improves the whole thing a bit.
I’m glad you all are here and supporting me (us) with advice and assistance... This might take a long time, but I prefer to ask questions early on (even if some things are not yet certain) rather than wait until it’s too late to ask.
I believe what ypg meant is that as a layperson, I really don’t have much say because I have no expertise in the subject. In that respect, he is absolutely right! Nevertheless, I am gathering information and small pieces of knowledge here, which I can later bring up (whether with the heating engineer or the house builder) when it comes to planning. Maybe that will already help to spark some ideas.
In any case, during my next conversation with the house builder, I will ask how their planning process generally works. I will continue to share updates here, and hopefully (at least for me, since this is my thread) something useful will develop that improves the whole thing a bit.
I’m glad you all are here and supporting me (us) with advice and assistance... This might take a long time, but I prefer to ask questions early on (even if some things are not yet certain) rather than wait until it’s too late to ask.
@ypg is, by the way, a woman.
Otherwise, this is really a double-edged sword. Or to put it another way: Blessed are the simple-minded, for they will always have a functioning ventilation/heating/photovoltaic system with storage.
If you invest the time to learn, you might squeeze out the last 20% more efficiency/performance/quietness, but it also requires about four times the effort.
The problem is that most heating professionals follow a standard procedure. Heating systems must provide warmth, ventilation must ventilate, and they often oversize components or play it safe to avoid extra effort before and after installation.
Heat pumps are oversized, flow temperatures are planned too high, ventilation is designed for too large an air volume, and so on.
There is definitely room for improvement. But keep in mind: craftsmen are often proud people. My first HVAC technician, a regular subcontractor of my general contractor, ended our collaboration because I asked too many questions.
My current one is much better, but it took a lot of effort to find him, and he’s still not perfect. And this doesn’t make the trade any cheaper.
What you can definitely do is at least let them know that low noise levels are important to you and think about which standard temperatures you want in which rooms.
Otherwise, the system will be designed strictly according to standards: 20°C (68°F) in living rooms, 24°C (75°F) in bathrooms.
If you prefer 22°C (72°F) in living rooms, depending on the design, the system might be undersized and energy consumption will increase.
Otherwise, this is really a double-edged sword. Or to put it another way: Blessed are the simple-minded, for they will always have a functioning ventilation/heating/photovoltaic system with storage.
If you invest the time to learn, you might squeeze out the last 20% more efficiency/performance/quietness, but it also requires about four times the effort.
The problem is that most heating professionals follow a standard procedure. Heating systems must provide warmth, ventilation must ventilate, and they often oversize components or play it safe to avoid extra effort before and after installation.
Heat pumps are oversized, flow temperatures are planned too high, ventilation is designed for too large an air volume, and so on.
There is definitely room for improvement. But keep in mind: craftsmen are often proud people. My first HVAC technician, a regular subcontractor of my general contractor, ended our collaboration because I asked too many questions.
My current one is much better, but it took a lot of effort to find him, and he’s still not perfect. And this doesn’t make the trade any cheaper.
What you can definitely do is at least let them know that low noise levels are important to you and think about which standard temperatures you want in which rooms.
Otherwise, the system will be designed strictly according to standards: 20°C (68°F) in living rooms, 24°C (75°F) in bathrooms.
If you prefer 22°C (72°F) in living rooms, depending on the design, the system might be undersized and energy consumption will increase.
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