New A/C installed...wet slab..normal?

Discussion in 'HVAC Heating & Cooling' started by a12548, Jul 25, 2008.

  1. a12548

    a12548 New Member

    Jul 13, 2006
    I just had a 4 ton Goodman installed and its working great but the outside unit is on a new slab and it always has a puddle of water slowly seeping from under the unit and off the slab. The drain pipe is working ok..pumping water out. I looked inside and notice a brass colored pipe had lots of condensation on it, could that be the source and arent they usually insulated? or is this just normal. Im in Florida. thanks.
  2. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Nov 8, 2005
    Hansville, Washington
    That's the return line from the airhandler. It's normally below the dewpoint, and will sweat in high relative-humidity conditions. There's generally no reason to insulate them when they're outdoors, especially on a ground-level slab.
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  4. Marc46

    Marc46 HVAC Contractor

    Jul 27, 2008
    HVAC Contractor
    Central Florida
    It is likely coming from the suction tubing which is copper "inside" of the condensing unit.
    It is buiding up as it drips into the unit base, and then running out through the "weep holes" that let water out when it rains.

    I would not be concerned as long as the entire compressor is not "sweating" water. That would indicate an improper refrigerant charge, or possibly low air flow across the evaporator coil, due to a dirty air filter, or a partially plugged coil.

    BTW, I have run my own HVAC business for 17 years in Florida.

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