A:Answer Air conditioners act like dehumidifiers and remove the humidity but also blow air through the chilled A coil in your furnace which goes into the home through your registers. The dehumidifier only remove humidity, however, removed humidity makes the living space more comfortable. You will still need to supplement this with air conditioning. For example 74 degree air with 43% humidity feels as comfortable as 71 degree air with 57% humidity. Removing humidity is a must for comfort. Your air conditioner fights the humidity that is rising from your basement.