ᐅ Quiet decentralized ventilation system for new single-family home construction
Created on: 1 Mar 2015 12:48
L
Legurit
Hello everyone,
During our first consultation with a building professional for a quote, we were asked to choose a ventilation system ourselves, as we are still somewhat skeptical about the "SEVi 160" model proposed by them. Our planner recommended a Halmburger ventilation system – we definitely want to see and listen to it in person. He also mentioned BluMartin, which personally seems a bit bulky to me – and once additional rooms are connected, it starts to feel more like a “central” system again. I also find the cassette filters quite expensive at 50 € (about $55) per unit per year.
We found the videos on the Bayernlüfter website quite appealing, but we are somewhat skeptical about the maximum airflow of 20 m³ (about 710 cubic feet) per hour. We also couldn’t find any information about noise levels at different ventilation rates (which is also missing for the SEVi – but the building professional mentioned that it can be heard).
We are looking for a ventilation system that can achieve an air exchange rate of 40 m³ (about 1,400 cubic feet) per hour (approximately 1 air change per hour for our bedroom) without being audible. Does such a system exist, or does anyone have experience with the mentioned brands? Is an air exchange rate of 1 per hour even necessary for a bedroom with two occupants?
Thank you and best regards.
P.S.: I have the impression that the decentralized ventilation industry is very fragmented with many small players.
During our first consultation with a building professional for a quote, we were asked to choose a ventilation system ourselves, as we are still somewhat skeptical about the "SEVi 160" model proposed by them. Our planner recommended a Halmburger ventilation system – we definitely want to see and listen to it in person. He also mentioned BluMartin, which personally seems a bit bulky to me – and once additional rooms are connected, it starts to feel more like a “central” system again. I also find the cassette filters quite expensive at 50 € (about $55) per unit per year.
We found the videos on the Bayernlüfter website quite appealing, but we are somewhat skeptical about the maximum airflow of 20 m³ (about 710 cubic feet) per hour. We also couldn’t find any information about noise levels at different ventilation rates (which is also missing for the SEVi – but the building professional mentioned that it can be heard).
We are looking for a ventilation system that can achieve an air exchange rate of 40 m³ (about 1,400 cubic feet) per hour (approximately 1 air change per hour for our bedroom) without being audible. Does such a system exist, or does anyone have experience with the mentioned brands? Is an air exchange rate of 1 per hour even necessary for a bedroom with two occupants?
Thank you and best regards.
P.S.: I have the impression that the decentralized ventilation industry is very fragmented with many small players.
EveundGerd19 May 2015 17:31f-pNo schrieb:
.
As I read, you received an invitation from @EveundGerd. If I remember correctly, they also installed a decentralized system.That’s right. However, it has not been fully installed yet. It will take about two more weeks until the installation is complete.
Hello BeHaEIJa,
Yes, such systems do exist…!
This system has been on the decentralized ventilation market with heat recovery since around January 2015 and delivers about 37 m³/h (approximately 1 per hour) on the lowest setting at an almost whisper-quiet 18 dB. I have attached the performance data, although these still need to be verified by an institute. The system currently does not have DIBt approval and is therefore not yet eligible for KfW funding. However, it is already well suited for basement ventilation and commercial areas. I have also successfully used it in residential construction.
Generally, air exchange rates of 0.3 per hour are sufficient to ensure continuous fresh air and a good indoor climate.
Theoretically, an inverter-based system such as the iV14 delivers about 13 m³/h on the lowest setting. At full capacity, and assuming paired operation, it reaches around 29 m³/h. However, noticeable noise can be heard then, which may disturb falling asleep. To ensure quiet sleep, it is now possible to temporarily switch off ventilation in the room for a set period on any decentralized ventilation system using additional components, with an automatic restart guaranteed.
But some questions:
1. During the planning of the single-family house, did no one create a specific ventilation concept? Usually, the planner, architect, or other qualified persons are responsible for planning the ventilation concept. You can’t just send the homeowner off saying, “Just pick any system you like!”
2. Has the natural infiltration rate been calculated? Could it already be sufficient to provide moisture protection in the building? (When creating a ventilation concept, at least moisture protection must be ensured. I have attached an example of such a calculation. It can look like this or something similar.)
Feel free to send me a private message if you have any questions.
-----------------
Hello,
I have deleted your self-promotion; there is space for that on your profile. Please observe the forum rules. Thank you!
Best regards, Building Expert
Building Expert
BeHaElJa schrieb:
We are looking for a ventilation system that can handle an air exchange rate of 40 m³/h (about 1 per hour for our bedroom) without making any noise. Does such a system exist, or does anyone have experience with the mentioned devices? Is 1 per hour even necessary for a bedroom (2 people)?
Yes, such systems do exist…!
This system has been on the decentralized ventilation market with heat recovery since around January 2015 and delivers about 37 m³/h (approximately 1 per hour) on the lowest setting at an almost whisper-quiet 18 dB. I have attached the performance data, although these still need to be verified by an institute. The system currently does not have DIBt approval and is therefore not yet eligible for KfW funding. However, it is already well suited for basement ventilation and commercial areas. I have also successfully used it in residential construction.
Generally, air exchange rates of 0.3 per hour are sufficient to ensure continuous fresh air and a good indoor climate.
Theoretically, an inverter-based system such as the iV14 delivers about 13 m³/h on the lowest setting. At full capacity, and assuming paired operation, it reaches around 29 m³/h. However, noticeable noise can be heard then, which may disturb falling asleep. To ensure quiet sleep, it is now possible to temporarily switch off ventilation in the room for a set period on any decentralized ventilation system using additional components, with an automatic restart guaranteed.
But some questions:
1. During the planning of the single-family house, did no one create a specific ventilation concept? Usually, the planner, architect, or other qualified persons are responsible for planning the ventilation concept. You can’t just send the homeowner off saying, “Just pick any system you like!”
2. Has the natural infiltration rate been calculated? Could it already be sufficient to provide moisture protection in the building? (When creating a ventilation concept, at least moisture protection must be ensured. I have attached an example of such a calculation. It can look like this or something similar.)
Feel free to send me a private message if you have any questions.
-----------------
Hello,
I have deleted your self-promotion; there is space for that on your profile. Please observe the forum rules. Thank you!
Best regards, Building Expert
Building Expert
L
Lebensprojekt23 May 2015 19:50Which company produces the system? What is it called?
L
Lebensprojekt23 May 2015 20:47We already discussed this system in a previous thread; it has been available for some time and also comes with DIBt approval. However, it is true that the new system (I’ve already seen it at the building trade fair) does not yet have approval... I expect it will receive it later this year.
Best regards
Best regards
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