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Teufelchen198529 Nov 2013 09:44Hello everyone,
we are building a KfW 70 house, which is economic even without a mechanical ventilation system.
Now, like many others, we are uncertain whether we really want to install a mechanical ventilation system. It has been planned, but the prices quoted are quite high... A decentralized system also seems to be similarly expensive due to the number of rooms and additionally causes quite a few holes in the nice facade...
Our heating engineer, who also installs ventilation systems, suggested installing fans in the exterior walls of the wet rooms (guest toilet and bathroom). These would be controlled by a switch and/or humidity sensors to extract the moist air from the rooms.
Additionally, a cooker hood with exhaust ventilation is recommended for the kitchen.
What do you think about this?
From a cost perspective, it does seem to be considerably cheaper.
we are building a KfW 70 house, which is economic even without a mechanical ventilation system.
Now, like many others, we are uncertain whether we really want to install a mechanical ventilation system. It has been planned, but the prices quoted are quite high... A decentralized system also seems to be similarly expensive due to the number of rooms and additionally causes quite a few holes in the nice facade...
Our heating engineer, who also installs ventilation systems, suggested installing fans in the exterior walls of the wet rooms (guest toilet and bathroom). These would be controlled by a switch and/or humidity sensors to extract the moist air from the rooms.
Additionally, a cooker hood with exhaust ventilation is recommended for the kitchen.
What do you think about this?
From a cost perspective, it does seem to be considerably cheaper.
Umbau-Susi29 Nov 2013 10:33We are very satisfied with our Berbel extractor hood. I can definitely recommend it. It really clears the air well.
Sylvia
Sylvia
The benefit is quite limited, isn’t it? Then you can simply open the windows after showering? Or do you not have any windows in the bathroom/toilet? If there is no heat recovery involved, I would skip the fans and just open the windows.
Regarding the extractor hood: Have you planned a chimney? If so, an extractor hood becomes a bit more complicated (pressure switch, etc.).
Regarding the extractor hood: Have you planned a chimney? If so, an extractor hood becomes a bit more complicated (pressure switch, etc.).
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Teufelchen198529 Nov 2013 11:18No, a chimney is not planned.
The advantage compared to opening a window seems to exist only if the fan activates due to the humidity sensor and then turns off again once the humidity is no longer high; in that case, the window can be ignored...
The advantage compared to opening a window seems to exist only if the fan activates due to the humidity sensor and then turns off again once the humidity is no longer high; in that case, the window can be ignored...
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nordanney29 Nov 2013 12:55If you are building nowadays, a mechanical ventilation system with heat recovery should basically be mandatory. Can you really ventilate your airtight house properly, 24/7, by yourself?
By the way, your heating contractor offers great prices if it’s an electric model. Ask other families in your neighborhood. Almost everyone installs a ventilation system, and the comfort improvement is significant.
There are many posts on this topic here in the forum—mostly in favor of mechanical ventilation with heat recovery!
By the way, your heating contractor offers great prices if it’s an electric model. Ask other families in your neighborhood. Almost everyone installs a ventilation system, and the comfort improvement is significant.
There are many posts on this topic here in the forum—mostly in favor of mechanical ventilation with heat recovery!
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