ᐅ Mechanical ventilation with heat recovery and exhaust ventilation from the kitchen hood

Hello everyone,

We are building a KfW70 house. We would really like to install a range hood with external ventilation.

Is that possible?

Are there specific mechanical ventilation with heat recovery (MVHR) systems that support this?

Best regards, Barossi

Hello,
yes, that is possible. Search the forum for pressure switches, you should find all the important information there.

Edit: Sorry, you need a pressure switch for a fireplace. A mechanical ventilation system with heat recovery and an exhaust hood should also work without it.

Yes, we did it that way and only need the proper exhaust hood with a chimney.

I’m very happy that we have a vented range hood – it’s incomparably better than the recirculating ones that smell.

Hello,

perfect!

We also have a tiled stove, so we will need the window switch for that.

Is exhaust air compatible with every ventilation system with heat recovery? We haven’t decided yet.

Best regards, Barossi

The mechanical ventilation system doesn't care – you need a pressure switch. Discuss all of this with your local chimney inspector – and do it now!

Over the weekend, we clearly realized how important a pressure switch is when used together with a fireplace and mechanical ventilation.

Our kitchen extractor hood only works when the window is open – not primarily because of the fireplace (although that is of course required), but because otherwise it hardly works properly in an insulated house.

Sebastian79 schrieb:

I’m very glad we have a ducted range hood – it’s not comparable to those recirculating stinkers anymore.

Objection.
We have a Berbel exhaust hood with an activated carbon filter, and even then you can’t smell fried fish... For example, I often fry fries and have no problems at all, no odors. However, it is quite expensive, and the filter eventually needs to be regenerated or replaced.
We have had ours for 2 years now, and the first filter is still working well. We cook daily and fry fries about twice a week.

However, the heat stays inside, which is an issue in our small kitchen... Because then it’s not only the cook who sweats, but also the refrigerator and freezer.