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Old 08-13-2010, 10:08 AM  
Elen
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Default Suggestions/Help on AC

Hi all. Recently we had a new furnace and air conditioner installed. Works great - no problems there. However, when the AC comes on - I can smell an odor which I believe is coming from the upstairs. (We live in an up and down, with a tenant upstairs). Each time the AC comes on I swear I can smell a combination of wet dog and garbage. My husband thinks I'm imagining things, but I really don't think so.
So my question is: is this at all possible, or am I truly a nutbar?
Any suggestions you can give would be appreciated.



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Old 08-13-2010, 10:59 AM  
kok328
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Two possibilities:

1. Your smelling something being pulled into the return air ducts from the tenants upstairs.

2. Your condensate drain tube is clogged and building up water and possibly mold/bacteria in the drip pan.



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Old 08-13-2010, 11:08 AM  
gatorfan
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You might also want to open up your air handler and have a look at your evaporator coils. If there is a problem with your condensate drain they may also be moldy. If so, first fix the moisture problem, then spray the coils with evaporator cleaner or Lysol.

Matt

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Old 08-13-2010, 11:19 AM  
Elen
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From my limited knowledge of this system I would say that the smell is being sucked into the return air from the upstairs.
The condensate tube is downstaris with us, and it drains directly into a floor drain. I've looked at the floor drain and can't see a problem there with buildup, etc. So that said, it leads me back to the first sentence? If this is indeed the case, how do I combat this? (short of telling the tenant to clean up, which as you can imagine would go over like a lead balloon)

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Old 08-13-2010, 01:25 PM  
kok328
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The problem isn't necessarily with the floor drain. It could be in the condensate pan, drain line and/or evap coils. Otherwise, you might need to look into a furnace filter that removes odors. I believe these would be carbon fitlers. Short of that, place a air freshener in the return air duct.



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