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farseer · Guest

Hi,
most of the duct work in my basement comprises of what looks like a
flexible silver insulation which wraps a pink fiber like insulation
which wraps a black plastic like coil. I noticed that in one place in
my basement, for about 5-6 feet or so, the duct work has no insulation,
just the black plastic is showing. is this a big problem? Does it
cause the overal system to be less efficient?

Also, if i wanted to replace a duct myself, can someone recommend a
resource for reading up on installing ducts and what i would need to do
so? I understand special consideration has to be made regarding the
size of the opening used at the unit self that sources the airflow to
the ducts. is this correct?

lots of question i know...but i have had such a problem with
contractors when it comes to this system, i'd like to just finish it
myself if i can.

thanks