ᐅ Which type of controlled residential ventilation system do we have?
Created on: 2 Jun 2017 23:42
4
4Motion
Hello everyone,
I have never read and researched as much as on the topic of mechanical ventilation with heat recovery and I am still undecided. So I’m opening a thread, like many others here have done. Yes? / No? / And which system?
About us:
- My wife is a fresh-air enthusiast :-) In our apartment, she constantly ventilates. During winter, she does shock ventilation; in summer, many windows are just tilted open. Will we be able to ventilate the house as well as a small apartment?
- She grew up in a multi-family building with solid concrete walls. It is always cool there. I find it uncomfortable, but she likes it. So it would be great if the mechanical ventilation system could keep our house cool in summer. But most systems only have a bypass and no cooling function.
- Strangely, she finds the air in prefabricated houses (which usually have mechanical ventilation) “like foam” and “as if you could cut it.” I cannot explain that.
- As for me, I am climate-flexible :-) but definitely want to avoid mold. So far, I have never had problems with it and I want to keep it that way!
About the building area:
- Rural and absolutely quiet, no noise pollution.
- Twice a year there is a strong odor for about a week when the fields are fertilized. Then with mechanical ventilation, I assume there is no chance to keep the smell out? You’re not supposed to turn the system off, right?
About the house:
- Because of mold risk, I want a vapor-permeable construction with brick blocks. Wood frame construction is not an option because wood wouldn’t store cold in summer as well as a solid wall house.
- Heating will be an air-to-water heat pump with underfloor heating.
- The builder also recommends red lime plaster for moisture regulation.
- The builder advises against mechanical ventilation, saying it is unnecessary and not cost-effective.
Conclusion:
I don’t have a conclusion yet. I’m undecided. I like the idea of mold protection, but the costs are high for something we might not need. We don’t even know if the indoor climate would really improve. My gut feeling says we might like the comfort.
Finding the right system:
If we go for it, I would prefer a central mechanical ventilation system installed in the technical room in the basement that is quiet and can be maintained by ourselves as much as possible. How can I best compare different providers? Are there any test reports?
Thanks in advance!
I have never read and researched as much as on the topic of mechanical ventilation with heat recovery and I am still undecided. So I’m opening a thread, like many others here have done. Yes? / No? / And which system?
About us:
- My wife is a fresh-air enthusiast :-) In our apartment, she constantly ventilates. During winter, she does shock ventilation; in summer, many windows are just tilted open. Will we be able to ventilate the house as well as a small apartment?
- She grew up in a multi-family building with solid concrete walls. It is always cool there. I find it uncomfortable, but she likes it. So it would be great if the mechanical ventilation system could keep our house cool in summer. But most systems only have a bypass and no cooling function.
- Strangely, she finds the air in prefabricated houses (which usually have mechanical ventilation) “like foam” and “as if you could cut it.” I cannot explain that.
- As for me, I am climate-flexible :-) but definitely want to avoid mold. So far, I have never had problems with it and I want to keep it that way!
About the building area:
- Rural and absolutely quiet, no noise pollution.
- Twice a year there is a strong odor for about a week when the fields are fertilized. Then with mechanical ventilation, I assume there is no chance to keep the smell out? You’re not supposed to turn the system off, right?
About the house:
- Because of mold risk, I want a vapor-permeable construction with brick blocks. Wood frame construction is not an option because wood wouldn’t store cold in summer as well as a solid wall house.
- Heating will be an air-to-water heat pump with underfloor heating.
- The builder also recommends red lime plaster for moisture regulation.
- The builder advises against mechanical ventilation, saying it is unnecessary and not cost-effective.
Conclusion:
I don’t have a conclusion yet. I’m undecided. I like the idea of mold protection, but the costs are high for something we might not need. We don’t even know if the indoor climate would really improve. My gut feeling says we might like the comfort.
Finding the right system:
If we go for it, I would prefer a central mechanical ventilation system installed in the technical room in the basement that is quiet and can be maintained by ourselves as much as possible. How can I best compare different providers? Are there any test reports?
Thanks in advance!
Yes, you’ve understood it correctly: one ensures air exchange while the other are just holes in windows (with all the resulting consequences).
P.S. The claim about leaks is not really true… you have been misinformed…
[B]Verification of the airtightness of the entire building
If an inspection is carried out to verify the requirements according to § 5 paragraph 1, the air volume flow rate measured according to DIN EN 13829 : 2001-02 at a pressure difference of 50 Pa between inside and outside – relative to the heated air volume – must not exceed for buildings
- without mechanical ventilation systems 3 h⁻¹ and
- with mechanical ventilation systems 1.5 h⁻¹.
[/B]
P.S. The claim about leaks is not really true… you have been misinformed…
[B]Verification of the airtightness of the entire building
If an inspection is carried out to verify the requirements according to § 5 paragraph 1, the air volume flow rate measured according to DIN EN 13829 : 2001-02 at a pressure difference of 50 Pa between inside and outside – relative to the heated air volume – must not exceed for buildings
- without mechanical ventilation systems 3 h⁻¹ and
- with mechanical ventilation systems 1.5 h⁻¹.
[/B]
Mycraft schrieb:
Is a verification of the requirements according to § 5 paragraph 1Isn't that only required if you are dependent on the "KFW funding"?
With or without KfW... this is just to illustrate how houses are built nowadays... the general contractors, or whatever you want to call them, all build according to their standard projects with more or less minor variations... especially in the case of prefabricated houses... (I’m not referring to the floor plans, but to the overall house concepts)
Similar topics