One or two dehumidifiers for a 4100 sqft house with two ac system?

  1. Today, 04:31 PM #1

    Join Date
    Mar 2023
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    One or two dehumidifiers for a 4100 sqft house with two ac system?

    Currently planning the HVAC for my 4200 sqft house in Mississippi. My HVAC contractor suggested 2 separate ac systems (2 ton and 3 ton) because the insulation will be spray foam. I like the idea of using whole house dehumidifier because of the green grass climate. My question is, do I need to install two dehumidifiers, one for each ac system, or will one unit be sufficient? I plan to have another ERV system to take care of the ventilation. Thanks.


  2. Today, 05:15 PM #2

    Join Date
    Aug 2002
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    Southold, NY
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    Wait for member Teddy Bear for dehumidifiers, spray foam and outside air recommendations.

    I’m more concerned with proper sizing.

    5-Tons for 4200sqft new construction sounds oversized from here!


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