Exhaust hood in controlled residential ventilation: Your experiences?

Hello Manuel,

we have the wall-mounted hood Blockline from Berbel.

The standard LED lighting is completely sufficient for us, as we have installed a few nice lighting effects elsewhere (base lighting with color-changing option as well as LED spots in the ceiling) in the kitchen.

Regards,

Dirk

That's why I think it's complete nonsense to paint the energetic disaster on the wall. And even if you forget to open the window (we don't have a contact switch), it doesn't immediately create a vacuum in the house that causes suffocation.

Do you have a fireplace? Then keep the window closed and let the exhaust run. Maybe nothing happens, maybe nothing can be seen, but if it does, the outcry will be great.

Of course, we don't have a fireplace! Surely it is cozy and looks nice. I just don't want to deal with the work with wood, the mess, etc., especially since real (open) fireplaces are no longer allowed anyway. But sure, you are right, controlled residential ventilation, exhaust hood, and fireplace do make the whole thing more complex, however, controlled residential ventilation and exhaust is not a problem at all and that was what was asked about, there was no mention of a fireplace...

have you ever thought about why you would build a KfW70 house with controlled residential ventilation if you then have to leave the window tilted open every day while cooking? And it's not about 5 to 7 euros that you occasionally blow out...

??? Seriously, how long do you cook every day??? Even if I make myself a schnitzel or steak with fries, etc., it doesn't take longer than an hour, pasta, rice, etc. is even faster. We have an open living-dining room with an open kitchen, the room is about 60m² in total. If you then tilt a window in the kitchen and the extractor hood is running, you naturally notice that it gets a bit cooler in the kitchen area, here you basically have a cycle, cool air coming in through the window, cooking fumes going out. However, in the living and dining area, you hardly notice anything, no drafts, it doesn't get cooler or anything like that. So you don't pull all the warmth out of the entire room, but only cool down a maximum of one third of one room for max. 1 hour a day. Hallways, bathrooms, bedrooms, dressing rooms, guest rooms are all unaffected. You seriously don't believe that this causes extremely rising heating costs? I have already assumed about 10%, although as mentioned, you only open the window for about 10% of the living area for 5% of a day. Maybe someone can calculate what that would mean purely mathematically?

Hello,

I also cannot understand why on the one hand enormous effort is put into insulation, a controlled residential ventilation system is installed, and then a hole is made in the exterior wall, which despite the hopefully insulated masonry box still represents a certain thermal bridge.

Why should I make the (admittedly small) effort to tilt a window in order to operate my exhaust hood when there are now recirculating hoods that work just as effectively?

Apart from the fact that in certain seasons I would be unnecessarily blowing warmed air outside to a considerable extent and, in return, bringing cold air (through the tilted window) into the building.

By the way, this is also relevant in summer – in doubt, I blow out the cooler air that I have inside the building thanks to great insulation and controlled residential ventilation, and I let hot outside air come into the house through the tilted window.

In any case, we have a perfectly functioning system consisting of controlled residential ventilation, recirculating hood, and DiBt-certified wood stove, and despite the recirculating hood, we have no problems with cooking odors in our approximately 72 sqm open living/dining and kitchen area.

It is far from me to condemn other approaches as wrong – I can only report how trouble-free and comfortable our installed solution works.

Regards,

Dirk