is there a humidity range that my A/C should keep the house at?
yesterday it was about 45% inside (about 80% outside).
usually when the outside humidity is less than about 50%, the inside is about 3% to 10% lower than outside. the difference is smaller when outside humidity is low, and bigger when the outside humidity is high. does this sound right?
the reason for my question?
we have a whole house humidifier (turned off now) that is set at approx. 35% in winter. i'm just wondering why the forced air heat would dry the house out more than A/C. i only know the very basics of HVAC, and know nothing about theory.

BTW: whole house/ central forced air heat and air
2 story brick house in western PA