1950 home on slab, returns on floor

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by karen1234, Oct 10, 2009.

  1. karen1234

    karen1234 New Member

    Messages:
    1
    Location:
    illinois
    Our home was built in 1950. It is on a slab, and the returns are in the floor, run through concrete ducts. Where the returns come together under the furnace, there is an about 8" drop. While my husband was putting a new filter in, (under the furnace) he noticed that this area is filled with water, but only about an inch or two. He used a wetvac to suck the water out, and slowly but surely, the water returned. It does not reach the return ducts, and they are dry, however, in looking at this area below the furnace more closely, this has been happening for a while, because there is a line where the water has been and never rises above. I guess that explains why in the past when the furnace turns on it smells musty. This smell is bad today though. Any ideas?
  2. seaofnames

    seaofnames DIY Senior Member

    Messages:
    162
    Location:
    Mission, BC
    Sounds like a low point in the system. Condensation is building up on all of the vertical runs or the duct work is pitched slightly so it all runs down to the bottom where the water is collecting. A small hole drilled where the water collects would drain the water out of the duct work, but you'd have to patch up all the holes and see if there are any other areas where water or condensation could occur.

    Check the humidity levels in your house since the lack of a proper vapour barrier may be causing too much humidity. Especially with the weather getting colder and wetter, this is a good time to fix it now. You may have to replace some ducting if it is rusted out as well.
  3. nhmaster

    nhmaster Master Plumber

    Messages:
    3,189
    Location:
    S. Maine
    I might worry about mold and airborne bacteria also. Is the bottom of the furnace all rusty?
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,515
    Location:
    Cave Creek, Arizona
    water

    There are many ways the water could get in there. If it always stays at a certain level it could be a high water table, or that could be the point where there is a hole so the water cannot get any higher. You could have leaking plumbing or soaked ground after a rain. Without checking the ductwork and other inspections there is no way to diagnose your situation.
Similar Threads: 1950 home
Forum Title Date
Plumbing Forum, Professional & DIY Advice, Tips & 1950s home - copper type/diameter? Apr 6, 2006
Plumbing Forum, Professional & DIY Advice, Tips & Sewer line embedded or below slab? (1950's house - St. Paul, MN) Oct 27, 2011
Plumbing Forum, Professional & DIY Advice, Tips & Is a 1950s rough-in code compliant for a new bathroom? May 20, 2009
Plumbing Forum, Professional & DIY Advice, Tips & replacing 1950's bathtub Feb 5, 2008
Plumbing Forum, Professional & DIY Advice, Tips & shower head 1950's Jan 13, 2008

Share This Page