Do you need a kitchen extractor hood?

Hello everyone,

we are building a Kfw40 house and have been advised against using a hood with exhaust by several sources, because otherwise you have to take care of sealing when the hood is off. Exhaust is not extremely important to me either.

This raises the question: with a ventilation system, do you even need an exhaust hood, or doesn't the ventilation system take care of it anyway?

Counter-question: where should the fat from cooking go? Into the ventilation system or into the grease filter of a hood?

I would choose a cooker hood in the recirculation version. They filter the cooking air through a built-in filter, which you then replace regularly (e.g., once a year, depending on the manufacturer). This way, your home ventilation does not have to deal with the cooking air.

Do you still need an exhaust hood with a ventilation system, or doesn't the ventilation system take care of that anyway?

Controlled residential ventilation delivers significantly smaller air volumes than an exhaust hood/recirculating hood does, so controlled residential ventilation doesn't do much against odors and grease from cooking. Also, what others have already said is true: no one wants greasy exhaust air in the controlled residential ventilation system. Therefore, you should not do without the exhaust hood/recirculating hood. With controlled residential ventilation, I also see the recirculating hood as an option, but you have to pay a lot of money if you want it to be reasonably quiet.

Especially since the grease fumes would not be captured at all by the controlled residential ventilation, even if the exhaust of the controlled residential ventilation were directly in the ceiling above the cooktop. The grease fumes have already cooled down enough about 100 cm above the pan so that they sink back down. As a result, they settle on the surfaces in the room.

A circumstance that renders ceiling-integrated hoods absurd. And those things suck considerably stronger than a controlled residential ventilation system.

then tell me how the grease always ends up on the wall cabinets