ᐅ Central or Decentralized Ventilation System – Who Has Experience?

Created on: 26 Feb 2018 10:48
G
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.
T
Tego12
3 Mar 2018 11:56
Bookstar schrieb:
... back then, it was those drafty windows doing it, and they were free

Yes, including cold drafts and radiant cold from all possible building components... Brr
blaupuma3 Mar 2018 13:57
Phew, that is expensive.

I received a verbal offer for a central system for 6,000-8,000 euros (Schleswig Holstein) all inclusive.
blaupuma3 Mar 2018 14:14
No, another company that works with him.

Maybe he also wants his percentage, but that is negotiable.
Mycraft3 Mar 2018 14:25
I handled it similarly back then. I simply agreed in advance with the construction manager that an external company would come to install the system. This already saved about 7000.
B
Baumfachmann
3 Mar 2018 14:27
The Zehnder Q350 costs €2300 plus ventilation ducts and installation, which makes it feasible for under €10,000.
I paid €8,900 for 176 m² (1894 sq ft), 5 rooms, 2 bathrooms.
S
stefan_k
3 Mar 2018 15:27
Hello, does anyone know a reliable company near Düsseldorf? I would like to get a quote independently from the general contractor.

Best regards,
stefan_k