I know this because the humidity is just miserable. And it's only at 74%, but I just hate feeling the extra damp in my clothes, my sheets, everything. And that is with the air-conditioning on and the house cooled to 73 degrees F. I'm definitely a cold-weather person. I don't mind heat & humidity when I'm outside, poolside, or beachside, but when I'm inside ... it'd better be comfortable! Ah, well...such is life with 4 seasons, and I adore the other 3, so I'll just tolerate this temporary discomfort!