I have several times found return and/or supply ducts lying completely
open/disconnected under houses and in attics. Luckily not my houses.
Wilton
----- Original Message -----
From: "LWB250" <lwb...@yahoo.com>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Monday, July 13, 2009 9:52 PM
Subject: Re: [MBZ] Speaking of hot....
Thanks, Peter.
I have pretty well gone over everything from the basement to the second
floor and only found a few things that weren't totally right. I have
dampered down the downstairs and made sure everything is open upstairs, too.
I'm suspecting that I have some return issues on the second floor, as the
returns in the rooms are on the ceiling, and in a couple of them I find
little or no airflow (the "tissue test" like the one used for a 123 or 124
thermistor fan.)
Based on the "workmanship" (and I use that word loosely) I suspect I've got
some crushed or crimped flexible return ducts in the attic space. Right now
it's just too hot to be up there for any length of time, but on the next
cloudy day or early on Saturday morning before things heat up I'm heading up
there to check things out.
Again, thanks!
Dan
--- On Mon, 7/13/09, Peter Frederick <psf...@earthlink.net> wrote:
From: Peter Frederick <psf...@earthlink.net>
Subject: Re: [MBZ] Speaking of hot....
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Date: Monday, July 13, 2009, 6:44 PM
I almost forgot -- you should also
look for in-line dampers! Depending on the age and
installation, there may be dampers in the supply ductwork,
usually well hidden.
Sadly, it's likely that the ductwork to the upstairs is too
small. Might run through the attic and be
un-insulated, too, I'd check that as well. Flexible
ducting isn't a problem really, unless badly installed so
that the ducts are not open (as in stuffing excess ducting
in rathe than trimming it to lenght, resulting in a crimp
and no flow).
Especially check for loose connections for the upstairs --
I'd hate to think you were attempting to cool the attic!
Peter
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