Modern whole house humidifiers employ a humidistat which senses outdoor
temperatures and adjusts indoor humidity accordingly. The specific %
humidity to prevent sweating windows changes with both indoor and outdoor
temperatures, window characteristics, etc. i would suggest you install such
a humidistat if you don't already have one. Aprilaire makes a very well
designed unit I use here. Their wrbsite also offers good information on
humidity control if you merely want more knowledge on this subject.
First where do you live? Do you have zone HVAC system?
Is your house pretty air tight(good insulation)?
Style of house? Even automatic humidifier needs manual tweaks.
When I installed Aprilaire I did not opt for automatic one.
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