Results 1 to 10 of 10
  1. #1
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415

    Moldy musty smell?

    I have an account with 8 RTU's (Trane). It seems since I took over the account either "stuff" just happens a lot (my personal murphy's law I tend to bring with me), or perhaps some negligence.

    I got a call earlier this week, said that they think there's mold in the building, possibly in our HVAC system. Personally I think since it's a childrens hospital I think they are hypocondriacs lol.

    The RTU's are reasonably new (5-8 years?), they are pretty darn clean, filters changed regularly (by me)... so I doubt there's anything there. No drain pan tabs, but around here, hardly anyone uses them or needs them.

    I'm pretty sure I'll find nothing while I'm there... but I was wondering if you guys had any advise? The other idea I had was spraying the coils down with some antibacterial crap (Lysol? or some other stuff if a supply house has something).
    "If you call that hard work, a koala’s life would look heroic."

  2. #2
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    Ah, yeah, ignore the post count, I'm new here... guess we do have an IAQ section huh?
    "If you call that hard work, a koala’s life would look heroic."

  3. #3
    Join Date
    May 2005
    Location
    Lubbock Texas
    Posts
    773
    Most likely dirty sock syndrome. I would start with pan tabs if it isolated to the RTU you can get control of it there. If they are running at such low temps to make the ducts sweat that's a whole new ball game. Most mold spores follow the moisture. Aspergillus mold will thrive in a dry climate outdoors and enter the unit through the fresh air vents. If there is quite a bit of vegetation out side around the building. Make sure they are using at least a merv 10 filter but merv 13 is recommended. If all elese fails contact your local Trane dealer about us.

  4. #4
    Join Date
    Jan 2005
    Posts
    604
    Does this odor occur while you are in fan cabinet? LOL
    Coudn't resist that one.

  5. #5
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    Humm, now that you mention it, it is only when I'm there

    Seriously though, I could almost buy the dirty sock syndrome. Kinda odd that they've never had that problem before... course, maybe they have and I've never heard from them, or it's magical.

    I'm not sure what the filters are, just the "regular" 2" pleated filters... my mind is drawing a blank about the merv rating on them, am I right in assuming they are 10?

    Good point about the vegetation... They are on the outskirts of town, in fact aside from the parking lot around their building, and another strip mall/docors office place (smallish), it's surrounded by fields on every side. Might have to keep that in mind.

    I haven't made it there yet, been too busy. I'll be sure to keep y'all updated if I find anything though
    "If you call that hard work, a koala’s life would look heroic."

  6. #6
    Join Date
    Jul 2001
    Location
    Canada
    Posts
    1,813
    Had 1 at a school last week , the smell was WORK SOCKS after a lonnnnnnnnnnnnnngg hot day.

    Right at the OA intake rain water was pooling up , it is a gravel roof and 99% of it drains properly but for this spot. Someone had added additional gravel so that the water was not visible , but it just lays there and stagnats and the fan draws in the smell as its set for 10% min fresh air.

  7. #7
    Join Date
    Sep 2008
    Location
    Cedar Rapids, IA
    Posts
    486
    Whenever a client talks about mold. I ask them if they want me to bring in an IAQ specialist and test. We partner with a local company that provides the service. Now it is their decision not to test and I am no longer on the hook for their potential health problems. We can do some of the testing like CO2 levels to see if there is enough outdoor air ventilation, but testing for mold types and concentrations should really be done by a specialist.

  8. #8
    Join Date
    May 2008
    Location
    Jax Fl.
    Posts
    1,943
    The best thing we have found for temporary relief from "Dirty Socks Syndrome" is Ace Eco-Treat [time release encapsuled chlorine dioxide].

  9. #9
    Join Date
    Mar 2005
    Posts
    997
    Any chemical that you would spray inside the HVAC system to kill mold should be EPA approved.

  10. #10
    Join Date
    May 2004
    Location
    Rapid City, SD
    Posts
    7,415
    good point about the chemicals... and upon thinking about that more... I'm kind of leery of using chemicals especially if I'm not sure what the problem is or where it is. This could cause more irritation (although temporary) than one kid coughing when he was in the building.

    When I get there I'll look for the obvious, but if they are pressing for more, I like the idea of calling in a specialist.
    "If you call that hard work, a koala’s life would look heroic."

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event