: Of course, you can justify your decision against controlled residential ventilation. But I am also allowed to express my opinion on it!
Quick question: Do you also have ventilation in your car? No fear because of that?
-So I don’t have to take any additional measures regarding humidity.
-What’s so bad about it running continuously? 10 or 15W power consumption on the lowest setting? My heating controllers or the timer-controlled blinds consume more!
-Maintenance costs, I can’t deny that: but why should I care about almost 80€ per year if fresh filtered air is always available?
-When I see what my filters filter out, I wonder where the high dust load should come from? Window ventilation is of course not moving air?! Please name the study!
-I only hear my controlled residential ventilation on the highest level. But this is not even used during the quick airing function.
-I cannot understand noise pollution and fine dust pollution from a controlled residential ventilation system vs. a heavily trafficked street.
About the car:
Only at first glance a good example. Fresh air only comes in there; there is no extraction, so no condensation forms because of the ventilation. The air-conducting ducts tend to smell musty with incorrect use of the air conditioning in summer, namely when the air conditioning runs until the vehicle is switched off.
About power consumption:
Has anyone measured that? How is a fan supposed to generate such a high air exchange rate at only 15W against filters at all valves and in the central unit? Either the filters are very coarse, permanently clean, or the consumption seems a bit optimistic to me.
About dust:
Actually, neither side can complain who vacuums with a normal vacuum cleaner. Consequently, one must then work with a central vacuum system. However, that again is problematic with controlled residential ventilation.
About acoustics:
That cannot be generalized. On the one hand, it depends on sensitivity, and on the other hand, on the arrangement of the valves. Those who are acoustically disturbed by the airflow would probably also be disturbed by the telephony effects of the piping and the large door gaps, i.e., the associated noise transmission.
I am very glad to have an architect whom I know and trust, and who does not push me what puts the most money in his pocket.
In my circle of acquaintances, houses planned by the architect mostly have no controlled residential ventilation; the houses planned by the general contractor are exclusively equipped with controlled residential ventilation... one might think badly of that.
If you then ask why controlled residential ventilation was installed, you get the same arguments like a prayer wheel... and somehow you have the feeling that maybe sometimes one doesn’t want to admit that the 12,000-15,000 euros might not have been so well invested after all.
My favorite is the calculation that with an exhaust air temperature of 20° and supply air warmed up to 18° by the heat exchanger, a heat recovery rate of 90% is achieved... pure cooking of the books at its finest.