ᐅ Exhaust Air vs. Recirculation in a Mechanical Ventilation with Heat Recovery System
Created on: 4 Jan 2017 22:12
M
Momad
Hello,
we are building a KfW 70 semi-detached house with a controlled ventilation system, and now I am facing the decision between exhaust air or recirculating air in the kitchen. Unfortunately, I can’t find clear answers on this in the forum or online in general.
My general contractor said it’s no problem and that they can install an exhaust air system if desired.
In five different kitchen showrooms, I received five different answers and recommendations (definitely no exhaust air, exhaust air is prohibited, recirculating air is fine, exhaust air is better, etc.).
How have you solved this in your homes, and which factors are crucial for making this decision?
Thank you!
we are building a KfW 70 semi-detached house with a controlled ventilation system, and now I am facing the decision between exhaust air or recirculating air in the kitchen. Unfortunately, I can’t find clear answers on this in the forum or online in general.
My general contractor said it’s no problem and that they can install an exhaust air system if desired.
In five different kitchen showrooms, I received five different answers and recommendations (definitely no exhaust air, exhaust air is prohibited, recirculating air is fine, exhaust air is better, etc.).
How have you solved this in your homes, and which factors are crucial for making this decision?
Thank you!
Oh dear, that’s really frustrating.
Is your ventilation system unable to remove the humid air or vapor?
Which exhaust vent are you planning to install? A blower door certified one would be the ideal solution.
Long-term experiences from owners of such systems would be very helpful.
Is your ventilation system unable to remove the humid air or vapor?
Which exhaust vent are you planning to install? A blower door certified one would be the ideal solution.
Long-term experiences from owners of such systems would be very helpful.
K
Knallkörper5 Jan 2017 12:11We have the Berbel wall vent. We used it before as well, and it works very well. The flap opens motor-driven. I believe the Naber vent operates without an electric drive, but that can cause problems when the wind blows directly onto the opening or at building corners, where the covers can be forced open by suction.
Energy losses caused by the range hood are negligible. What matters is that moisture and odors are expelled immediately, rather than having to be ventilated out manually or through the mechanical ventilation system.
There is also a corresponding fresh air intake vent for the Berbel wall vent, in case pressure equalization is required. The downside is that this requires an additional wall opening.
Energy losses caused by the range hood are negligible. What matters is that moisture and odors are expelled immediately, rather than having to be ventilated out manually or through the mechanical ventilation system.
There is also a corresponding fresh air intake vent for the Berbel wall vent, in case pressure equalization is required. The downside is that this requires an additional wall opening.
K
Knallkörper5 Jan 2017 20:30Hello.
This is the BMK-L 150. The model works with "all" hoods and detects the pressure increase in the pipe.
In our old house, this device has been serving well for years. From what you can see from the outside, it looks clean. Due to the positive experience, I installed the same device in the new house myself. It’s actually quite simple, and the core drilling did not cost much.
This is the BMK-L 150. The model works with "all" hoods and detects the pressure increase in the pipe.
In our old house, this device has been serving well for years. From what you can see from the outside, it looks clean. Due to the positive experience, I installed the same device in the new house myself. It’s actually quite simple, and the core drilling did not cost much.
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