ᐅ Unfinished ventilation system (mechanical ventilation with heat recovery), noise disturbance when sleeping in the room below?

Created on: 23 Jun 2016 17:30
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Andre8999
Hello everyone,

The installation of the controlled residential ventilation system was planned for our attic. This way, the ducts can be better distributed to the rooms below, and we saved space in the utility room.

Our bedrooms are located on the upper floor (master bedroom, walk-in closet, two children’s rooms, and bathroom). The ceiling to the attic is a wooden beam ceiling with OSB boards, which is insulated but naturally does not provide as much soundproofing as a conventional concrete ceiling on the ground floor. The intended location for the unit is directly above the bedroom. The intake opening is planned to face the gable side. On this side, there is also a children’s room.

Now, I am a bit concerned about noise. I’m wondering if the operation noise of the controlled ventilation system might disturb our sleep at night, or if it is usually quiet enough not to be noticed?

Relocating the system to the other gable side would be possible (there is the bathroom and another children’s room on that side), so we would position the ventilation unit directly above the bathroom, hoping that the noise would then not be heard in the second children’s room.

The disadvantage is that the chimney is also located on this gable side, connected to a wood stove. Could it be possible that, depending on weather conditions and chimney draft, the intake opening of the controlled ventilation system might draw in exhaust gases from the chimney?

Has anyone else installed the controlled residential ventilation system in the attic (within the insulated building envelope)?
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Sebastian79
7 Jul 2016 07:07
It is difficult to do in the gable area – a grille also makes little sense there.