Hello,
we have a semi-detached house of 150 sqm (1,615 sq ft) plus a basement, newly built by a developer.
I wanted to ask if it makes sense to retrofit a decentralized ventilation system?
The semi-detached house is KFW 55 standard, and ventilation is planned to be ensured by opening windows (this is the current plan).
Installing a central ventilation system is not possible; the decentralized one would have to be installed by us after handover.
Are there decentralized ventilation systems with built-in air conditioning (for the bedroom)?
we have a semi-detached house of 150 sqm (1,615 sq ft) plus a basement, newly built by a developer.
I wanted to ask if it makes sense to retrofit a decentralized ventilation system?
The semi-detached house is KFW 55 standard, and ventilation is planned to be ensured by opening windows (this is the current plan).
Installing a central ventilation system is not possible; the decentralized one would have to be installed by us after handover.
Are there decentralized ventilation systems with built-in air conditioning (for the bedroom)?
N
nordanney20 Jul 2021 14:11Pacc666 schrieb:
I wanted to ask if it makes sense to retrofit a decentralized ventilation system? These units require electricity and a core drill hole. The latter is quite easy to manage. The former can be a problem. The electrician should already pull additional cables. Is there a chimney present?
Pacc666 schrieb:
Is there also a decentralized ventilation system with built-in air conditioning (for the bedroom)? Not to my knowledge. I also wouldn’t know how that would work.
What does "meaningful" mean? What purpose do you want to serve?
I have just retrofitted the bathroom and bedroom with decentralized ventilation units because a) controlling humidity in the bathroom is not straightforward, and b) the CO2 levels in the bedroom were noticeably too high when the door and windows were closed.
Even with decentralized units, you should consider the overall ventilation concept. It can make a significant difference whether someone (or how many people) are at home during the day or not...
Having the electrical wiring installed in advance would be a cost-effective preparation...
And: As far as I know, there are no decentralized units with built-in air conditioning. But here too, bypass functions can achieve some results. As I said, this also needs to be planned...
I have just retrofitted the bathroom and bedroom with decentralized ventilation units because a) controlling humidity in the bathroom is not straightforward, and b) the CO2 levels in the bedroom were noticeably too high when the door and windows were closed.
Even with decentralized units, you should consider the overall ventilation concept. It can make a significant difference whether someone (or how many people) are at home during the day or not...
Having the electrical wiring installed in advance would be a cost-effective preparation...
And: As far as I know, there are no decentralized units with built-in air conditioning. But here too, bypass functions can achieve some results. As I said, this also needs to be planned...
Pacc666 schrieb:
the decentralized system would have to be installed by us after handover In a new build, I wouldn’t add any modifications afterwards; it’s better to include any additional wishes during the construction phase.
Based on your thread history, I get the overall impression that you are actually a custom home builder who somehow ended up in a developer project, or that this is at best your Plan B and you are now trying to make the best of a difficult situation. If that’s the case, my suggestion would be: consider accepting some “optimality compromises” and resolve the conflict by planning to move into your dream home in about ten years from the start.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Pacc666 schrieb:
Ventilation is planned to be ensured by opening windows (this is the current plan) That is more wishful thinking. Or rather, since we have had COVID, it has finally become possible again. However, if the occupants are away from the house most of the time due to work, school, etc., ventilating by opening windows is mostly just theoretical.
The most comfortable approach is to have the systems installed from the start. Or at least to have core drillings/openings prepared and electrical wiring laid to the desired locations.
You can’t avoid having a ventilation concept, no matter how you approach it. Simply buying something and installing it is unreliable. That will fail (even if it seems to work).
Air conditioning (active cooling) and ventilation are two completely different things. The only overlap is air being moved and expelled somewhere.
If you want active cooling in the bedroom (which is very sensible with today’s building methods), have it installed right away or at least prepare for it. This also requires a core drilling (50mm (2 inches) is enough), power supply, and condensate drainage for the indoor unit.
Mycraft schrieb:
The most convenient way is to have the devices installed from the start. Or to plan the core drilling/openings in advance and run electrical wiring to the desired locations. Actually yes – but I suspect the difficulty here is that a building authority might say "no" if you submit an inappropriate request ;-) to build not two dozen identical houses but 23 identical ones and one with fairy dust and chrome trims, just because a princess (m/f) got lost in a standard project.
Therefore, as an alternative, I would reduce the suggestion to simple pre-installation as before. My "ideal solution" would still be, as mentioned, to make compromises (even if you’re not a professional in catering, *SCNR*) and focus on considering the unwanted suboptimal option as a transitional house.
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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