kWp query

[Countrypaul]

In this country the temperature does not normally get that cold for us to worry about the air being too dry. However if you spend winter time in Switzerland, or parts of North America it does get very dry and feels uncomfortable indoors just due to dryness. It is very common to find humidifiers running (like large kettles the ones I've seen) just to make the air a little more humid and bearable.

One example of the dryness that I found hard to understand when I first was confronted by it in Switzerland was that in the morning after a cold night the car had virtually no frost on it, but in late afternoon when it had been warmer (still below 0C) the car was covered in frost. During the morning things warmed up and the air became more moist, but as it cooled down in the afternoon the water had to go somewhere and cold metal/glass was ideal. Not sure when the frost disappeared, but I assume that as it got colder the air got dryer and the frost sublimed away. Any other theories?

[AE-NMidlands]

In this country the temperature does not normally get that cold for us to worry about the air being too dry. However if you spend winter time in Switzerland, or parts of North America it does get very dry and feels uncomfortable indoors just due to dryness. It is very common to find humidifiers running (like large kettles the ones I've seen) just to make the air a little more humid and bearable.

One example of the dryness that I found hard to understand when I first was confronted by it in Switzerland was that in the morning after a cold night the car had virtually no frost on it, but in late afternoon when it had been warmer (still below 0C) the car was covered in frost. During the morning things warmed up and the air became more moist, but as it cooled down in the afternoon the water had to go somewhere and cold metal/glass was ideal. Not sure when the frost disappeared, but I assume that as it got colder the air got dryer and the frost sublimed away. Any other theories?

In "this country" (UK, where I live) dry indoor air definitely is an issue, and at times in most winters I find that uncomfortably low indoor RH gives me dry/split lips.
I hadn't thought of humidification as I assume our house plants deal with it - and boiling kettles costs money - but I might consider it now...
A