ᐅ Exhaust hood in a mechanical ventilation system with heat recovery: What are your experiences?

Hello everyone,

Does anyone here use an exhaust hood despite having a controlled mechanical ventilation system? Generally, recirculation is recommended with controlled mechanical ventilation, but it seems possible to use an exhaust system as well, which appeals to me (odors and dirt stay outside).

What are your experiences?

Thank you in advance!

Hello,

KfW 70 or better?

Regards, Bauexperte

no KfW standard

This topic is being discussed here:

https://www.hausbau-forum.de/threads/Dunstabzug-ueber-Dach-oder-wand.10575

Regards, Bauexperte

Thank you for the information. However, the topic does not discuss the exhaust hood in connection with a mechanical ventilation system with heat recovery. The ventilation system manufacturer generally recommends recirculation, but it still should be feasible.

Hello,

in my opinion, using an exhaust hood together with a mechanical ventilation system with heat recovery is quite pointless.

Take a look at how much air such an exhaust hood expels from the house – without opening a window (at least tilting it), you can no longer operate a modern exhaust hood without quickly creating a significant negative pressure inside the building, which will very likely disrupt your mechanical ventilation system.

If your main concern is effective removal of odors and grease particles, I would recommend checking out the website of the company "Berbel."

We have a recirculating hood from Berbel in our new kitchen – just two weeks ago, it completely eliminated the typical raclette smell within a very short time.

Our hood also has a self-regenerating activated charcoal filter (with a built-in catalyst) as an additional feature – so we probably won’t need to replace the filter media.

Thanks to a special design of the hood’s intake channels (similar to the profile of a jet wing), the majority of airborne particles in the suctioned air are flung against the wall by centrifugal force even before reaching the activated charcoal filter, where they stick and can simply be wiped off after cooking.

Best regards,
Dirk