Blowing plain vent air will work, but it will take a long time.
Blowing air-conditioned vent air will work better, because one of the effects of air conditioning is that it removes moisture from the air. So you’re blowing cool, dry air.
Blowing warmed-up air-conditioned air works best. The air conditioning dries it out, and the heat warms it up without adding any more moisture, so now you’re blowing warm dry air.
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