ᐅ Air-to-Water Heat Pump: Current Consumption and Data

How quickly did you reach 55-60% again?

I would estimate that this will happen within 4-5 hours.

halmi schrieb:

How quickly did you get back to 55-60%?

Does that really matter? 55-60% is perfectly fine for a bathroom without controlled mechanical ventilation. It doesn’t have to be 45%. As a "recommendation," you will find various sources suggesting somewhere between 50-60%. Only those of us with controlled mechanical ventilation have extremely low levels like 35-45% or even less.

Alessandro schrieb:

Maybe it’s normal, I don’t know.

That’s how it sounds to me at first. Just make sure to ventilate regularly and that should be fine. If the humidity is around 60% in winter, just open the windows again.

Zaba12 schrieb:

Does it matter? 55-60% relative humidity is completely normal for a bathroom without mechanical ventilation. It doesn't have to be 45%. As a "recommendation," you can find ranges anywhere between 50-60%. Only we with mechanical ventilation have extremely low humidity levels of 35-45% or even less.

That was just a question, but considering the timeframe, I don’t think there’s anything broken or leaking in the bathroom.

Especially if there is no controlled residential ventilation, this is completely normal. Where do these concerns even come from?
At your parents’ place, something is simply not airtight—whether it’s the windows, doors, or wastewater/ventilation pipes—there are many possibilities.