Don’t make a science out of it: you’re humidifying the air additionally:
but expect that the controlled residential ventilation will quickly ventilate this additional humidification out before it condenses on surfaces with dew point undershoot? A local electronic room humidifier regulates very ... digitally, if it measures too little, it briefly increases to 60%+ in the immediate vicinity and expects that it mixes to 40% throughout the room. In practice, that simply doesn’t work: the rain cloud from the humidifier moves along the natural circulation towards the ceiling and falls back down along the windows, where it can nicely condense.
How warm is it at night in the rooms with condensation formation? If you absolutely want to maintain 40% humidity, then you must also ensure that the necessary room temperature is maintained, i.e. around 22°C+ around the clock.
those are only the values from the bedroom (that's how I understood it) The values for the whole house must look quite different, but a simple controlled residential ventilation system cannot differentiate that.
I can only agree with that. The air gets too dry for us in winter as well, but thanks to Venta, it’s bearable. Still, no windows fog up.Nonsense! We have the Q450 with enthalpy exchanger and 2x large Venta air HUMIDIFIERS (Lw45) currently in use because I want a humidity level of >45%. We achieve that (at -10 degrees outside and daily use of the fireplace). Usually, we have between 45 and 50%. So optimal. I've never seen wet windows here. Not even in the bathroom after showering with a humidity of 90%.