Hello everyone,
maybe someone here can give us a good tip, as we are quite uncertain about a ventilation system.
We are planning to build a house (solid construction) according to KfW 70 standards, with underfloor heating, a fireplace, and a solar system. That much is already decided.
We received an offer from Company A for a ventilation system with heat recovery, and the salesperson recommended it to us.
At Company B, the ventilation system is significantly more expensive, and the salesperson told us that since the house is so well insulated, moisture would not be an issue... where would it come from? The rest could be regulated by normal airing anyway.
(I also think he realized that his ventilation system would have blown our budget and now I worry that he advised us against it just for that reason!)
My husband and I are laypersons, but my instinct tells me that the better the house is insulated, the more problems I would have getting rid of moisture and stale air inside the house, right?
After all, a blower door test does show that there is very little air circulation.
Am I completely wrong?
We are a bit torn now, since such a system is not exactly cheap! But is it necessary, or just a nice extra?
Thank you very much for your help!
maybe someone here can give us a good tip, as we are quite uncertain about a ventilation system.
We are planning to build a house (solid construction) according to KfW 70 standards, with underfloor heating, a fireplace, and a solar system. That much is already decided.
We received an offer from Company A for a ventilation system with heat recovery, and the salesperson recommended it to us.
At Company B, the ventilation system is significantly more expensive, and the salesperson told us that since the house is so well insulated, moisture would not be an issue... where would it come from? The rest could be regulated by normal airing anyway.
(I also think he realized that his ventilation system would have blown our budget and now I worry that he advised us against it just for that reason!)
My husband and I are laypersons, but my instinct tells me that the better the house is insulated, the more problems I would have getting rid of moisture and stale air inside the house, right?
After all, a blower door test does show that there is very little air circulation.
Am I completely wrong?
We are a bit torn now, since such a system is not exactly cheap! But is it necessary, or just a nice extra?
Thank you very much for your help!
Bauplane schrieb:
....I cannot understand at all the often claimed necessity for a mechanically controlled ventilation system to remove moisture. In my opinion, this investment along with the associated ongoing costs can be avoided with a uniformly and well-insulated building envelope. Exactly! However, fear of mold can be used to drive good business Best regards
P
perlenmann3 Feb 2014 08:31I'm just wondering where the air that the range hood exhausts is being replaced from? Whether it causes mold or not is another matter, but for me, not having to ventilate right after showering, being able to leave immediately, no musty smell in the bedroom in the morning, and cat urine that doesn’t stink up the whole house, are worth it.
Also, I’ve become a bit of a wimp. I find it really uncomfortable now when visiting somewhere and having to quickly open a window. It’s disgustingly cold outside.
Also, I’ve become a bit of a wimp. I find it really uncomfortable now when visiting somewhere and having to quickly open a window. It’s disgustingly cold outside.
B
Bauexperte3 Feb 2014 10:51Hello,
Regards, Bauexperte
Bauplane schrieb:Hmm ... a "very well insulated" prefabricated house and it’s not even KfW 70 yet
I live in a prefabricated house that is very well insulated and sealed (not yet KfW 70),
Regards, Bauexperte
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perlenmann7 Feb 2014 10:26Bauplane schrieb:
Children cryingIn my case, the mechanical ventilation system doesn't help with that.
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