Originally Posted by
avbcon12
Having built Geo unit homes, one cause I've seen for dehumidification can be longer fan run times. Make sure the blower motor/fan isnt set to run any longer than the compressor is on. Between this and possibly slowing down the fan you could see about a 10% increase in RH.
One client of mine had set their blower to On in the winter, not Auto thinking the more air circulating led to more consistent temps throughout the home. It didnt, all it did was cause more air to travel past the coils constantly which continued condensing the air (pulling out moisture). We set the fan to auto and the RH rose by 10%
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