Hello,
During our kitchen planning, the kitchen fitter recommended a ventilation hood with an exhaust air system.
Which is better for a KFW55 house: exhaust air or recirculation?
Advantage of recirculation: you don’t lose the heat to the outside.
Advantage of exhaust air: odors are removed much more effectively to the outside.
Is an exhaust air system even possible with a KFW55 house?
During our kitchen planning, the kitchen fitter recommended a ventilation hood with an exhaust air system.
Which is better for a KFW55 house: exhaust air or recirculation?
Advantage of recirculation: you don’t lose the heat to the outside.
Advantage of exhaust air: odors are removed much more effectively to the outside.
Is an exhaust air system even possible with a KFW55 house?
P
Pwnage61918 Nov 2021 19:02We do not have a mechanical ventilation system.
We need to ventilate by opening the windows.
We need to ventilate by opening the windows.
Pwnage619 schrieb:
We do not have mechanical ventilation with heat recovery.
We have to ventilate through the windows. In a KFW55 standard building? That seems contradictory: figures versus actions.
P
Pwnage61919 Nov 2021 08:47It is like this: we have a KfW55 house and no mechanical ventilation system, so we have to regularly ventilate through the windows.
Is it really possible to lose the KfW status with a blower door-tested exhaust hood?
The developer said I should just do it myself after the final inspection.
What could happen in the worst case?
Is it really possible to lose the KfW status with a blower door-tested exhaust hood?
The developer said I should just do it myself after the final inspection.
What could happen in the worst case?
So, we want a controlled residential ventilation system, with exhaust air routed through the floor slab, no wall duct, and a fireplace with fresh air supply also through the floor slab.
Our energy consultant said that the kitchen exhaust is not an issue and is simply accounted for in the blower door test and the KFW55 standard. Worst case, a window contact switch will be installed to ensure a window is slightly open when the kitchen exhaust is running. We don’t live in Siberia where -40°C (-40°F) air would be coming in. So let’s keep things realistic. 🙂
Our energy consultant said that the kitchen exhaust is not an issue and is simply accounted for in the blower door test and the KFW55 standard. Worst case, a window contact switch will be installed to ensure a window is slightly open when the kitchen exhaust is running. We don’t live in Siberia where -40°C (-40°F) air would be coming in. So let’s keep things realistic. 🙂
Pwnage619 schrieb:
The developer said I should just do it myself after the final inspection.
What could go wrong in the worst case? Why are you asking here about recirculation or exhaust ventilation if you definitely want exhaust ventilation? There are some supporters of recirculation here, but you are ultimately focusing only on the possibility of implementing exhaust ventilation in a KfW55 standard building.
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