I’ve got an indoor/outdoor thermometer & humidity guage.
What is an appropriate indoor humidity?
30 to 60 per cent
Agreed.
A/C systems are designed to manage temperature and humidity and the ‘target’ humidity for summer conditions is 50%.
In the winter, 15-40%. The colder it is, the less water vapor the air will hold. The warmer the winter weather, the more humidity the air will hold. (25-40% @ 30-50°)
At colder temps (0-25°) you’ll get maybe 15-25%.
YMMV.
If I can tack on a question:
At what level of humidity does static electricy buildup become noticable?
The kind where you walk across the room and then ZOT someone when you touch them.
I have humidity problems in my house, so got a humidifier, and made a humidity meter. I found that it had to be below 50% for it not to feel too cold in winter, but anything below 40% started getting too much static. What’s comfortable, however, is highly subjective, since people have differing temperature/humidity responses. I was still more comfortable at 35%, but the increasing static made me start fearing for my computers.
ETA: I keep my house at 60 degrees F. in winter. I don’t know how warmer temps would affect it.
Yeah, if I turn off the AC, I get 70%+.
I got a humidity problem.
in a cold winter climate below 30% will allow static, you will have a dry irritated nose and plants may have problems. above 60% you might get condensation on windows. between 40% and 50% will prevent static as well as let the air have a good heat capacity so you will feel warmer (if it is dryer you will run the heat more to feel as warm).