Mysterious black hose connected from wall under my bathroom sink to the sink drainpip

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by joe pipe, Aug 7, 2006.

  1. joe pipe

    joe pipe New Member

    Messages:
    1
    Anyone know what this hose is comming from wall going to my sink drain pipe under my bathroom sink...the otherside of the wall is a fire place in the bedroom.......anyone?
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,045
    Location:
    Cave Creek, Arizona
    hose

    The most common reason for it is that it is the condensate drain from your air conditioner.
  3. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    The first thing that comes to mind is a condensate drain from an air conditioner. Do you have an A/C above, such as in the attic? It is common to run the condensate drain down to a wye tailpiece under a sink.
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