ᐅ Central or Decentralized Ventilation System – Who Has Experience?
Created on: 26 Feb 2018 10:48
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Gerd&Jolanthe
Hello everyone,
We are going to build a single-family house to KfW55 standard. It will have a basement, ground floor, and upper floor. The living area is approximately 170m² (1830 sq ft) and the usable area 108m² (1163 sq ft) including stairs and basement – that’s the basic information.
Now we are wondering which ventilation system to choose, since new builds are very airtight due to the windows and insulation.
We were recommended a decentralized system, as it would be fully sufficient and requires less frequent maintenance and cleaning. Additionally, cleaning is easier and less problematic compared to a central ventilation system.
Could you share your views or experiences on which ventilation system would be most suitable?
Thank you very much.
We are going to build a single-family house to KfW55 standard. It will have a basement, ground floor, and upper floor. The living area is approximately 170m² (1830 sq ft) and the usable area 108m² (1163 sq ft) including stairs and basement – that’s the basic information.
Now we are wondering which ventilation system to choose, since new builds are very airtight due to the windows and insulation.
We were recommended a decentralized system, as it would be fully sufficient and requires less frequent maintenance and cleaning. Additionally, cleaning is easier and less problematic compared to a central ventilation system.
Could you share your views or experiences on which ventilation system would be most suitable?
Thank you very much.
G
Gerd&Jolanthe26 Feb 2018 14:07@andimann
Thanks for the information about Zehnder.
I wasn’t aware of that company until now.
Thanks for the information about Zehnder.
I wasn’t aware of that company until now.
Sorry,
I had overlooked that.
Then the answer is:
There is no such thing as a completely silent decentralized system!
With a decentralized system, you make holes in your walls, which means breaches in your sound insulation. It won’t be as bad as a tilted window, but it won’t be much better either.
Whether the system itself makes noise then doesn’t really matter.
Best regards,
Andreas
readytorumble schrieb:
quietest decentral system
I had overlooked that.
Then the answer is:
There is no such thing as a completely silent decentralized system!
With a decentralized system, you make holes in your walls, which means breaches in your sound insulation. It won’t be as bad as a tilted window, but it won’t be much better either.
Whether the system itself makes noise then doesn’t really matter.
Best regards,
Andreas
andimann schrieb:
With a decentralized system, you make holes in your walls, which means you also create holes in your soundproofing. It won’t be quite as bad as a tilted window, but it’s not much better either. That was our experience as well. Because we were annoyed by that, along with the noticeable noise from the ventilators, a decentralized system was no longer an option for us.
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Mastermind126 Feb 2018 20:30I often see these decentralized solutions in our new housing developments.
For retrofitting individual rooms, I think decentralized systems are excellent. But only for retrofitting.
In new buildings, you then see 10* of these holes in the wall with their housings.
That only causes disadvantages.
What happens on the windward side during a strong storm? (Is it airtight for 25 years of use?)
Am I going to change 2* 10 filters per year? (20* filters?)...
What does it look like if I have ten of these units in a room?
Estimated power consumption: 10 * 15 watts = 150 watts?
If you live in a rural area and the farmer spreads animal waste on the fields, do I have to switch off my central systems 10* times?
Our standard central mechanical ventilation with heat recovery consumes about 32 watts in normal ventilation mode. Most systems have air quality sensors that switch off when outside air quality is good (e.g., in rural areas). Or a single central switch.
Filter changes are done in one place.
If a builder sells "decentralized" ventilation for new builds, they usually only meet basic energy saving regulations, as they lack the expertise for more advanced solutions.
For retrofitting individual rooms, I think decentralized systems are excellent. But only for retrofitting.
In new buildings, you then see 10* of these holes in the wall with their housings.
That only causes disadvantages.
What happens on the windward side during a strong storm? (Is it airtight for 25 years of use?)
Am I going to change 2* 10 filters per year? (20* filters?)...
What does it look like if I have ten of these units in a room?
Estimated power consumption: 10 * 15 watts = 150 watts?
If you live in a rural area and the farmer spreads animal waste on the fields, do I have to switch off my central systems 10* times?
Our standard central mechanical ventilation with heat recovery consumes about 32 watts in normal ventilation mode. Most systems have air quality sensors that switch off when outside air quality is good (e.g., in rural areas). Or a single central switch.
Filter changes are done in one place.
If a builder sells "decentralized" ventilation for new builds, they usually only meet basic energy saving regulations, as they lack the expertise for more advanced solutions.
G
Gerd&Jolanthe27 Feb 2018 10:06readytorumble schrieb:
He is asking about the quietest decentralized system.
I am not familiar with that and did not want to have it in a new building.
If the provider insists on a decentralized system with the mentioned arguments, I would look for another home builder. If you are not familiar with it, that’s fine.
The question is not whether you want one, but which system has the lowest noise level measured in dB during operation.
There are also plenty of reasons against a central ventilation system, which are often not mentioned by the companies.
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