ᐅ Decentralized ventilation system with minimal visibility on the exterior facade

Created on: 8 Apr 2021 11:18

Hausbauin2021

Hello dear building forum,

We are constructing a 210 sqm (2,260 sq ft) single-family house to KfW 55 standard and want a decentralized ventilation system. (We have deliberately decided against a central ventilation system, but this is not the topic here.)

I am looking for a system that is discreet on the exterior of the house, for example, integrated into the window reveals. We do not want to have fans visible on the facade in every room.

Who has experience and can recommend something? I look forward to the exchange. Best regards

nordanney16 Apr 2021 20:03

#19

Bookstar schrieb:

Central systems have much quieter operating noise,

Quieter, but not by much.

Bookstar schrieb:

no holes in your exterior walls (noise from outside),

Can be installed almost invisibly in the window reveal. Outside noise is only noticeable in very noisy environments.

Bookstar schrieb:

easier to keep clean (only regular filter changes),

Same applies to decentralized systems.

Bookstar schrieb:

much better ventilation performance

The ventilation performance is properly calculated for both types and is identical.

Bookstar schrieb:

Heat recovery

... over 90% with decentralized systems.

Bookstar schrieb:

It’s just a poor low-budget solution. I’d rather skip it altogether and ventilate manually.

Nonsense!

Bookstar16 Apr 2021 21:05

#20

We had decentralized units from Meltem, which are supposed to be among the better ones. We hardly ever used them because they were very loud, caused drafts, and couldn’t be controlled centrally. Now with a central system, it’s a world of difference.

i_b_n_a_n16 Apr 2021 22:56

#21

I-Tec from Internorm meets almost all your requirements, though it is priced at the higher end.
With an integrated heat exchanger, it is said to achieve heat recovery rates of up to 93%.

Bookstar16 Apr 2021 23:19

#22

i_b_n_a_n schrieb:
I-Tec from Internorm meets almost all your requirements, but unfortunately it is at the higher end of the price range. With an integrated heat exchanger, a heat recovery efficiency of up to 93% is claimed.

😀 Just searched for user reviews on this. Devastating. Already loud buzzing at the lowest setting, and on setting 3 it becomes unbearable in the room. Who would install something like this??

i_b_n_a_n16 Apr 2021 23:22

#23

Bookstar schrieb:

😀 I just googled some user reviews about that. Devastating. Even on the lowest setting, it makes a loud buzzing noise, and on level 3 it becomes unbearable in the room. Who would install something like that??

By the way, this was not a recommendation from me! I simply refrained from commenting on decentralized ventilation systems because the original poster explicitly did not want a central system. So here is my opinion to avoid any misunderstandings: Who would do something like that? Do it properly – done.

askforafriend17 Apr 2021 08:45

#24

Bookstar schrieb:

We had decentralized units from Meltem, which are supposedly not the worst. We basically never used them because they were very noisy, caused drafts, and couldn’t be controlled centrally. Now that we have a central system, it’s a world of difference.

We also have decentralized units from Meltem—one in the living/dining/kitchen area and one in the bathroom. In the new build, there will definitely be a central system in every room.

ᐅ Decentralized ventilation system with minimal visibility on the exterior facade

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