Naming is allowed, linking less so. I just don't know if I would feel comfortable leading the fumes, for my part also with a filter, into the duct system of the Controlled Residential Ventilation.
Naming is allowed, linking less so. I just don’t know if I would feel comfortable leading the fumes with a filter, for example, into the duct system of the controlled residential ventilation.
Then I trust you that it is allowed to name "Systemair" rotary ventilation units. ;)
I would inquire directly with the manufacturer here, they can surely also answer how it behaves with KFW40.
What I wonder more is how often the duct system needs to be cleaned. Above all, maintenance possibilities should be planned in directly.
We fry (Russian cuisine) a lot at home and, for example, I have had bad experiences with recirculating range hoods.
Why do people actually spend a hell of a lot of money on an innovative energy-efficient house and then ruin it with an idea like that? I think you inform yourself about the advantages and disadvantages of a Kfw40 house with controlled residential ventilation and co?! o_O
The point is that a house manufacturer is playing nanny here. If the customer wants exhaust air, he wants exhaust air. It's that simple.
Nope, the home builders also have their obligations and laws that they must adhere to.
I am not entirely sure if everyone has understood this yet, so I will repeat it a third time:
The EXHAUST AIR function is used when it is NOT cold outside, to replace the expelled air with non-cold air from outside.
The RECIRCULATION function will be used in all other scenarios.
This is called the HYBRID function.
The manufacturers Berbel and Homeier offer this function. The associated wall box for the exhaust air function is certified for low-energy houses.
Both manufacturers are experienced in installing their systems in KW40 houses. I already knew that. I have confirmed this through phone calls.
Then I'll trust you that "Systemair" can be called rotary ventilation devices. ;) I would contact the manufacturer directly here, they can surely also answer how it behaves with KFW40. What I rather wonder is how often the duct system needs to be cleaned. Above all, maintenance options should be planned in directly. We fry (Russian cuisine) a lot at home and I have, for example, bad experiences with recirculation range hoods.
Because I am an amateur cook, fat extraction :cool: was important to me from the start, since it can get quite smoky here as well (sometimes unintentionally). Also, nothing is steamed, but rather cooked in fat. My chrome shiny espresso machine witnesses every one of these cooking events with a film of grease. According to a test by the Swedish equivalent of Stiftung Warentest, the best grease separators even achieve a success rate of almost 90% in recirculation mode. That is quite decent. The remaining 10%, however, end up on furniture or settle in the depths of the controlled residential ventilation system, provided they overcome ITS filters. To be safe in this regard, I want HYBRID. If that proves useless, I can still rely on recirculation. The only problem is when the house manufacturer doesn’t want to deal with certification at all and categorically decides that a HYBRID hood expels *Warning quote! Not from me!* 6,000 m³ of air per hour outside. And always.
What exactly is your problem then – your house is already built, right? If you should have your KFW confirmation, get the breakthrough made. The house builder apparently hesitates, so just hire someone else. The function seems to be more important to you than possible warranty claims anyway. So just do it (have it done)! And if anyone ever rats you out to the KfW because of it, then be a man and own up to it.