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Posted by on November 16, 2007, 10:19 am
I have a single story house built on a slab with a furnace (actually a
heat pump) roughly in the center of the house. The main supply and
return ducts go up thru the ceiling and into the attic. These are
wrapped with some foil faced insulation and project up into the attic
maybe two feet. Then there is the expected octopus of flex ducts
connected to these mains and running out to all the vents.
The flex ducts are the insulated type and once they get a few feet
from the connection to the main, they drop down to run on top of the
joists and are burried in the loose fill insulation.
While this setup is about as good as it can be, I've been thinking
about adding some insulation to that central distribution point, or
the hub of the octopus if you will, since that is the duct insulation
alone exposed to the attic. I've thought about just blowing in some
extra loose fill, just heaping it around and on top of the hub, but
was wondering if someone had done this before and had come up with an
easier way.
As it turns out, while there might be 8" or more of loose fill
insulation in the attic, some places have more than others. Rather
than get up there with a rake and even it all out, I have considered
just blowing some more into the low spots and leveling it out to maybe
12". So I'd have the blower and bags of the inulation on hand anyway
for tackling the duct distribution if there isn't a better way to do
it.
Christopher
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