Pros and Cons of Ventilation and Exhaust Systems

Old building? Or what?

Try doing that with a KFW 55, not ventilating for 2-3 days

Besides, it is also relatively pointless to have the door open at 30 degrees outside temperature. That way I bring the humid hot air into the house.. And seriously: I have insulated and upgraded my current old building, especially under the roof. It doesn’t work without ventilation. Everywhere else, by the way, too. I would very much like to have a central ventilation system

Our BU, a typically conservative pragmatic person like almost everyone here, told us. We will and must and also want to build densely so that you as a customer will need little energy. Therefore, I strongly recommend forced ventilation. But it doesn't have to be expensive... a controlled residential ventilation system is not necessary. It is sufficient, he said, to install window rebate vents and a humidity-controlled Helios exhaust fan in the main bathroom. It is quiet, consumes little electricity, and can run continuously. The extra cost of this simple ventilation à la Holstein was simply zero, it is his standard. If I absolutely didn't want it, he would have credited us 1000. Now the thing is here, the rebate vents are also installed. The electrician put it on a light switch, I could turn it off. But I don't do that. It runs all the time. It is really quiet. And even if all the windows are closed, the house is not stuffy. Well, the place is small, only one story, but apparently that is enough for such a building. Nevertheless, we constantly have the windows open, I feel like a house like this gets warm incredibly fast. So the wind is gladly allowed to blow through. But I believe, without anything at all would not be good, even though it is only KfW 70 standard. Looking forward to winter. Karsten

Quickly warm is not nice, the blinds would have helped [emoji16]

Winnetou, have you ever been to Spain? There they have all these shutters in front of the windows, the precursors of roller shutters. Always closed, locked, tight, unwelcoming. Like the Spaniard, so his house. Terrible, I don’t like it. Not at all. Oppressive, awful. And then these shutters are often still gray. And have such boxes. The sky is being shut out. No, I am firmly convinced, not the microwave, but the shutter makes you sick. My opinion is firm, don’t confuse me with facts. Karsten

No, your sky should stay blue. Yes, I was there, and I can understand the poor Spaniards. And I don't like it without [Rollläden] anymore, without them it would be unbearable here in the apartment, they are on the west side downstairs in summer, mostly of course when we are not there, that helps enormously.