ᐅ Positioning of Supply and Exhaust Air Ducts in the Interior Spaces

Created on: 9 Nov 2013 18:32
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Biggi12
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Biggi12
9 Nov 2013 18:32
Hello knowledgeable community,

I want to install a heat recovery ventilation system. Due to a limited budget, I am doing it myself. So far, I have been able to find helpful information through Google and YouTube. However, I am not finding much help here. I am not exactly sure where and how many ventilation grilles I need to install. The floor area is 160m² (1720 sqft). I plan to install the system on the floor.

Maybe someone with experience in this topic can mark this on the attached floor plan and send it to me? I am really uncertain about how to proceed.

Thank you, dear community

Grundrissplan eines Hauses mit Küche, Wohnzimmer, Bad, Dusche, Schlafzimmer und Eingangsbereich
€uro
10 Nov 2013 08:20
Hello,
Biggi12 schrieb:
...want to install a heat recovery system...
Why? New build or existing building?
Biggi12 schrieb:
...due to lack of money, I’m doing it myself...
First, prepare (or have prepared) an energy balance.

Best regards
Mycraft10 Nov 2013 11:51
Is the floor insulated?
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Biggi12
10 Nov 2013 12:58
Hello,

thank you for the quick response. The house is a Haacke house and was built in 1996. I have already installed an air-source heat pump system and added a 15 kW photovoltaic system on the roof. The heat pump provides heating, domestic hot water, cooling, and also heats a pool. I would like to install heat recovery ventilation to reduce the humidity inside the house, since we are also smokers and I prefer not to keep the windows open continuously during winter.

I believe (correct me if I’m wrong) that this could save on heating costs during winter, prevent mold, and ensure fresh air indoors at all times.
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Biggi12
10 Nov 2013 12:59
Oh, I forgot to mention that the floor is an uninsulated cold roof.
Mycraft10 Nov 2013 13:25
Yes, your plans are feasible and should work... but significantly reducing heating costs is unlikely... however, you will always have fresh air in the house and keep moisture outside.

That said, I see a major issue with the cold roof... because a ventilation system must be installed within the building envelope; otherwise, the moisture you want to remove will condense inside the ducts, which will create an even bigger problem.

So, either insulate the roof, or insulate the ducts and ventilation system very well, or choose a different location for installation.