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  1. #1

    Question Cannot Figure It Out. Help???

    Please reply with any thoughts. Our A/C unit in the closet has a lot of condensation on it. It only happens as the day goes on and it gets hot (TEXAS). Our A/C guy is stumped. He checked the evap coils and all was clean. He has been here twice and can't figure it out. It has a gas furnace so there is the opening to the attic. The filter is new too.

    The unit itself (case) is cold to the touch and that is where the condensation is.

    Suggestions for the next repair guy?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,807
    High humidity fresh air coming in teh furnaces combustion air intake. And possibly low air flow making the coil to cold.
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    How many times must one fix something before it is fixed?

  3. #3
    Join Date
    Sep 2007
    Location
    KY
    Posts
    79
    Is closet a conditioned space? ( same temp as rest of home)

    Has insulation in coil case been damaged or removed?

    is duct or furnace sweating?
    I'm lost, I've gone to look for myself.

  4. #4
    Join Date
    Apr 2006
    Posts
    143

    Lambfamily

    You need to insulate inside cabinet better than it is...it also sounds like you have a low return so if possible bring in a high return. And it is necessary to have fresh outside air in that mechanical room for combustion for that furnace so dont try to seal of all air inlets to remove humidity during summer. If condensation is causing mold after inner cabinet of unit has been re-insulated then I would suggest insulating exterior of cabinet with "BUBBLE FOIL" insullation...it glues on and looks o.k. But please have a tech due it and not yourself so as not to "screw up" something. "DO NOT" attempt to screw anything to the side of that unit. Also have tech check the blower speed on cool mode...to slow a speed will cause low temps but it is really bad for compressor and efficiency.
    Good luck

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