Why Is My Home So Dry After I Got A New AC? - Ask The Expert Episode 320

Today's question is from Barbara Guyer

"Hey Dan, Since my daughter installed MRCOOL in my garage apartment, my eyes have been significantly dry. Any suggestions?"

All AC units and heat pumps dehumidify as they're cooling. That is just a normal byproduct of them. So that could be why you're feeling drier than before.

If you live in a dry area, just get a humidifier and a humidity sensor, and that should solve your problem.

2 comments (view/add)
  • Dan
    Posted on 9/12/2022

    I have a related question in the opposite direction:

    I live in a humid area, prone to moisture and mildew, and would like to use the MRCOOL dehumidifier function to reduce humidity... including over longer periods of time when the home is empty. I have used the DRY mode setting, but understand this setting alternates between fan only and cooling. I don't really require the latter, but cooling may just be part of the deal.

    My question: What is the most effective and efficient combination of settings for leaving MRCOOL running in DRY mode for longer periods of time, when no one is in the home and cooling is not really required as much (or at all)?

    P.S., My neighbor also installed MRCOOL, once they saw how happy I was with mine, and has the same question. So your answer will be helping two satisfied customers!

  • Rebekah Muller
    Rebekah Muller from Ingrams
    Posted on 10/17/2022

    I apologize, but the DRY mode does not operate without also cooling, as that is how humidity is typically absorbed from a space by a heat pump system like this. If you do however need boosted dehumidification, we might suggest investing in a dehumidifier.

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