Quiet decentralized ventilation for new single-family house

When it comes to protection against external noise, decentral systems cannot compete with a central one. That was the exclusion criterion for us for a decentral system, and that's why we decided on a central system.

That's not really that bad... As a comparison, central system; e.g. Tecalor TVZ 170 plus: Sound power level (EN 12102) - dB(A) 45 and decentral BluMartin, e.g.: free Air 100: Sound pressure level (EN 20140-10) - dB(A) 46 I currently have that in an offer, so I can get that info quickly Rhine greetings

It was not the noise caused by the devices that concerned me, but the noise from the environment through the openings in the wall, which you have in every room.

but the sound of the environment through the openings in the wall, which you have in every room.

With decentralized systems, such as Lunos for example, I agree with you, although the "noise" is in my opinion negligible; unless you live on a busy main road. We have sold many of these systems and have received no feedback regarding significant noise disturbance (not even from Cologne-Rath). With BluMartin, on the other hand, only one fan per floor and an average house size of up to 150 sqm is required. In that case, the external sound should no longer play a significant role

Rhenish greetings

As I said, it put me off. One should definitely have it shown on a reference object sometime. With the BluMartin, maybe, although with one device per floor you can't really call it a "decentralized" system anymore. In a typical house, you'd then have 2 central devices, which makes me wonder why not just go central from the start?

As I said, it put me off. It should definitely be shown on a reference object. With the BluMartin that may be the case, although with one unit per floor you can no longer really talk about a "decentralized" system.

I see it exactly the same way, that's why I call it a hybrid system when asked for my personal opinion. The manufacturer, on the other hand, calls his system a decentralized ventilation system.

You then have two central units in a typical house, which makes me wonder why not just go fully central?

Maybe because not every builder wants a complex duct system installed in their house? Maybe also because not every builder is willing – to avoid dry winter air – to spend extra money, while this is already standard in comparable systems? Maybe also simply the fact that an air-water heat pump with cooling function – if it is to be installed – makes sense for the first time here with this ventilation – usable as a small air conditioner in summer? There will always be supporters of this or that system; however, the days when decentralized systems were prematurely labeled as the "cheap option" are definitely over. Rhenish greetings

Maybe because not every builder wants to have an elaborate piping system installed in their house?

If this system works without a piping system, how are the rooms ventilated if only one device is installed?