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Inspecting HVAC Systems Topics include heating, venting, and air conditioning inspections.

 
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  #1  
Old 10/8/10, 10:50 AM
Calvin D. Cowles's Avatar
Calvin D. Cowles Calvin D. Cowles is offline
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Default Two Questions
Two questions:

Why would I see water staining on ceilings around HVAC supply vents?
Is it OK to discharge a bathroom vent fan into the HVAC return plenum?
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  #2  
Old 10/8/10, 11:44 AM
Joshua L. Frederick Joshua L. Frederick is offline
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Default Re: Two Questions
Quote:
Originally Posted by ccowles View Post
Why would I see water staining on ceilings around HVAC supply vents??
Condensation? Were ducts insulated in attic?? Moisture meter? Regardless they're there for a reason & need fixin'

Quote:
Originally Posted by ccowles View Post
Is it OK to discharge a bathroom vent fan into the HVAC return plenum?
What do you think, Calvin? Of course it may have been one of those Redneck brand humidifiers.
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  #3  
Old 10/11/10, 4:15 PM
Charley L. Bottger's Avatar
Charley L. Bottger Charley L. Bottger is offline
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Default Re: Two Questions
Quote:
Originally Posted by ccowles View Post
Two questions:

Why would I see water staining on ceilings around HVAC supply vents?
Is it OK to discharge a bathroom vent fan into the HVAC return plenum?
Some contractors do not insulate the ducts properly especially at the end of the run of duct where it connects to the square ceiling register a lot of the time one will see no insulation at all on the attic side and especially like in your area high humidity will result in condensation dripping and or soaking the ceiling near the register,

No it is not alright to discharge bath exhaust into or near a return air 3 areas that returns are not allowed bathrooms,kitchens, and garages


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  #4  
Old 10/11/10, 4:30 PM
Mark Thorman Mark Thorman is offline
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Default Re: Two Questions
Quote:
Originally Posted by ccowles View Post
Why would I see water staining on ceilings around HVAC supply vents?
Around here the moisture stains on the walls below the registers appears to be a result of vacationers (its most often noted in vacation condos) who turn on the a/c at the same time that they open the doors and windows. Condensation collects and drips from the cold metal registers hitting the warm moist air. The solution here is a shutoff switch on the doors and windows. Open a door or a window and the unit shuts off.

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  #5  
Old 10/11/10, 4:40 PM
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Joe Funderburk, CMI Joe Funderburk, CMI is offline
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Default Re: Two Questions
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Originally Posted by ccowles View Post
Is it OK to discharge a bathroom vent fan into the HVAC return plenum?
Sure. It's the latest in recycling.


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  #6  
Old 10/11/10, 8:48 PM
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Stephen W. Stanczyk Stephen W. Stanczyk is offline
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Default Re: Two Questions
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Originally Posted by ccowles View Post
Is it OK to discharge a bathroom vent fan into the HVAC return plenum?
Why of course it is. Then you can share with the whole household......



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  #7  
Old 10/12/10, 12:03 PM
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Sean Fogarty Sean Fogarty is offline
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Default Re: Two Questions
I would think the first issue could be the result of the second.



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  #8  
Old 10/13/10, 3:09 PM
Calvin D. Cowles's Avatar
Calvin D. Cowles Calvin D. Cowles is offline
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Default Re: Two Questions
I guess I should have reversed the questions!

Sean finally got it.
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