ᐅ Mechanical Ventilation with Heat Recovery – You Can Hear Every Word from Another Room – Is This Normal?
Created on: 30 Jul 2018 22:43
D
Dodo86
Hello everyone,
We had the final inspection of our house two weeks ago. Now we have noticed that through the central ventilation system in the guest bathroom and utility room, every word spoken in the dining/kitchen/living area can be heard very clearly, as if you were sitting right next to each other. With the bathroom door open, the sound naturally carries up to the children’s bedrooms upstairs. On the upper floor, the sound transmission through the controlled mechanical ventilation system is significantly less.
Can I still report this as a defect after the final inspection?
Thank you very much and best regards!
We had the final inspection of our house two weeks ago. Now we have noticed that through the central ventilation system in the guest bathroom and utility room, every word spoken in the dining/kitchen/living area can be heard very clearly, as if you were sitting right next to each other. With the bathroom door open, the sound naturally carries up to the children’s bedrooms upstairs. On the upper floor, the sound transmission through the controlled mechanical ventilation system is significantly less.
Can I still report this as a defect after the final inspection?
Thank you very much and best regards!
There is the "Auspuff" model, about one meter (3 feet) long. These are so-called telephone silencers. They are specifically designed for this purpose and are installed directly in the supply and exhaust air ducts, providing noise reduction for all rooms. Alternatively, there are also soundproofed distribution boxes, and I believe even decentralized sound insulation on the valves.
In our case, the soundproofed distribution boxes have been planned from the start by the manufacturer.
In our case, the soundproofed distribution boxes have been planned from the start by the manufacturer.
Alex85 schrieb:
I find it quite strange that conversations from supply air rooms can be heard in exhaust air rooms. The common connection point of these rooms leads all the way back to the ventilation unit.This applies to all the ducts, though; each duct runs individually from the technical room into every single room, whether supply or exhaust air. I don't understand why voices can be heard from the openings, since there is no direct connection between the rooms except at the ventilation system, where silencers are installed.
Best regards,
Sabine
Curly schrieb:
This applies to all pipes; each pipe from the mechanical room runs individually to each room, whether it’s supply air or exhaust air.
I don’t understand why you can hear noises from the vents since there is no direct connection between the rooms up to the ventilation unit, and sound attenuators are installed there.
Regards,
Sabine Not all systems run individually to every room. There are also sub-distributions, etc.
Still strange, because supply air is mentioned but the noise is heard on the exhaust side. These are only connected through the heat exchanger in the ventilation unit.
So, aside from the possibility that the sound attenuators are missing, I also suspect mixed-up connections.
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