A new building was recently described in a newspaper where the air exchange is regulated through window rebate ventilation.
Is this a reasonable alternative to a controlled ventilation system, and does it help prevent mold?
How exactly does it work?
Is this a reasonable alternative to a controlled ventilation system, and does it help prevent mold?
How exactly does it work?
D
Deliverer23 Oct 2019 15:06We also have window frame ventilators with exhaust fans in the bathrooms and utility room. Apart from the bathroom, you can’t hear them at all; there are no issues with drafts or mold. Heating costs (with an air-to-water heat pump) are as low as €50 per month (about $55), so heat recovery ventilation would never have paid off. There are no maintenance costs, and I still need to figure out the electricity costs for the fans...
However, in our case, the price (self-managed with an architect) for a central controlled residential ventilation system was over €20,000 (about $22,000) in total, including all involved trades. Since the architect was very accurate with all his estimates, I assume it would have ended up that way. For our decentralized ventilation, we have now paid around €2,000 (about $2,200). Since money was tight, that was the main point of discussion.
In short: We would do it again.
However, in our case, the price (self-managed with an architect) for a central controlled residential ventilation system was over €20,000 (about $22,000) in total, including all involved trades. Since the architect was very accurate with all his estimates, I assume it would have ended up that way. For our decentralized ventilation, we have now paid around €2,000 (about $2,200). Since money was tight, that was the main point of discussion.
In short: We would do it again.
Mottenhausen schrieb:
Edit: I'll add that this is mainly ironic, before the first ones here start hyperventilating and having heart attacks again.Wrong: the second ones – that is quality!Original nonsense, where Mom usually only...
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Controlled mechanical ventilation systems hardly pay off financially, but regardless of mold prevention, the air in a new build quickly becomes stale when rooms are closed. We recently experienced this with four adults and four children in a 70m2 (750 sq ft) living room—after just one hour, the air was so heavy you could cut it, so the window had to be opened. All of this is a matter of comfort and must be affordable. With future energy saving regulations, it will probably no longer be possible to go without such systems, and they will become standard. It would be like having a car without power steering—also a matter of maintaining value.
Egberto schrieb:
We recently had four adults and four children in a 70m2 (750 sq ft) living room – after just one hour, the air was so thick you could cut it, and we had to open a window. Although I usually support "natural" ventilation, in this case the mechanical ventilation system can’t be blamed – it would need to adjust automatically via sensors if the number of occupants increases noticeably. Of course, the air exchange rate must be regulated accordingly, which can also be done by "manual airing."
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