HUMIDITY

Oh...
Not to mention the static electricity issues you'd have below 30%.

I should have said "above" the dew point (dry).

Forty five to sixty percent has worked well for me for over thirty five years. Lower end during summer months and closer to sixty during the winter. No worries!

 Hope you don't live in a cold winter climate to keep 60% humidity your windows will have ice on the inside. If you run a whole house humidifier beyween 35 and 45% and you will need to dial that down in very cold weather to around 25% maybe lower in sub zero weather. 

djones51

Hope you don't live in a cold winter climate to keep 60% humidity your windows will have ice on the inside.

You need new windows, or perhaps need to replace the glass in your existing windows.