This goes somewhat away from the topic, but I'm curious if you guys and girls use any room humidifiers. The heating season has started here and now it is possible to have outside at nights below freezing point already.
I my apartment I have central battery heating and air is changed by machines. So it is very dry at winter.
I have in my living room 2 acoustic guitars and 2 ukuleles, not in cases. While they are not solid, except maybe the classical one, the dryness affects their action. Plus it irritates my skin, eyes and my nose gets stuck.
So I took a steaming humidifier in use,
https://www.verkkokauppa.com/fi/product/49624/fbchr/Ufox-U3S-ilmankostutin
It steams in hot water principle about 5 liters of water at half power setting/day, but I use it only at night times about 12 h, to save electric power consumption (150W, but I measured it being just about 120W).
The difference between dry day time and humidified night time does not I think cause any bad effects to the instruments. I will also sort of almost close the living room door where there is no air exit because I many times fall asleep in the couch there after watching the TV, so it is mostly used for that maybe 25 m2 room space and should be enough.
Perhaps could be fine for solid wood instruments too?
The cold air comes inside to the room from above the window and it then goes downward. The humidifier does the opposite thing, so they should somewhat compensate each other. I also usually at winter minimize the air incoming gap, because the suction takes care of enough fresh air coming in anyways.
