Hi,

Suppose i am unable to get one duct run from the heating unit to where
the vent will be and i am forced to use two ducts instead. What is the
best way to connect these ducts? is using tape sufficient or are there
specialized connections for these types of situations?

Also, currently, the duct that i see used are the black plastic ones,
very thin it seems. Is insulation needed on these ducts?

Now i am not necessarily asking this so that i can do it myself, i am
asking to see if it was done correctly by someone else.

thanks

On the outside of the box for the flexible duct is usually a drawing of
how they are to be spliced together. It says to use a sheet metal
collar and clamps. That said I have inserted one section into the
other (overlap) about 6" and used the aluminized tape to seal the joint
and then to seal the insulation cover, again overlapped. Its been five
years with no problems and no leakage on at least five connections.
Since the duct comes in 50 foot lengths sometimes a splice can't be
avoided, sometimes its spliced just to use up the remaining length.

On Dec 6, 10:25 am, "farseer" wrote:
Hi,

Suppose i am unable to get one duct run from the heating unit to where
the vent will be and i am forced to use two ducts instead. What is the
best way to connect these ducts? is using tape sufficient or are there
specialized connections for these types of situations?

Also, currently, the duct that i see used are the black plastic ones,
very thin it seems. Is insulation needed on these ducts?

Now i am not necessarily asking this so that i can do it myself, i am
asking to see if it was done correctly by someone else.

thanks

thanks much. I don't know what they did here...but in my basement,
most of the ducts have a silver outer insulation, and within that is
the pink insulation and within that is the black plastic wrapping the
flex coil. However, for one particular duct, about 10 ft or so from
the unit, it appears they stripped all of that out and left just the
black plastic for about 5 feet then joined this to a duct leading up
into the the first floor. It appears they did this so the duct could
fit within the space between beams in the basement cieling. Is it ok
to have just the black plastic uninsulated? How difficult would it be
to replace this particular duct and run just one long duct?

On Dec 6, 10:49 pm, "Howard" wrote:
On the outside of the box for the flexible duct is usually a drawing of
how they are to be spliced together. It says to use a sheet metal
collar and clamps. That said I have inserted one section into the
other (overlap) about 6" and used the aluminized tape to seal the joint
and then to seal the insulation cover, again overlapped. Its been five
years with no problems and no leakage on at least five connections.
Since the duct comes in 50 foot lengths sometimes a splice can't be
avoided, sometimes its spliced just to use up the remaining length.

On Dec 6, 10:25 am, "farseer" wrote:



Hi,

Suppose i am unable to get one duct run from the heating unit to where
the vent will be and i am forced to use two ducts instead. What is the
best way to connect these ducts? is using tape sufficient or are there
specialized connections for these types of situations?

Also, currently, the duct that i see used are the black plastic ones,
very thin it seems. Is insulation needed on these ducts?

Now i am not necessarily asking this so that i can do it myself, i am
asking to see if it was done correctly by someone else.

thanks- Hide quoted text -- Show quoted text -

Looks like a wye connector allows splitting one duct into two. What i
would like to do is simply join two ducts to create one long duct.
seems there are some "industrial strength" type of duct tape i must use
for such a job...

On Dec 9, 2:27 am, Al Moran wrote:
On 6 Dec 2006 07:25:31 -0800, "farseer" wrote:

Hi,

Suppose i am unable to get one duct run from the heating unit to where
the vent will be and i am forced to use two ducts instead. What is the
best way to connect these ducts? is using tape sufficient or are there
specialized connections for these types of situations?

Also, currently, the duct that i see used are the black plastic ones,
very thin it seems. Is insulation needed on these ducts?

Now i am not necessarily asking this so that i can do it myself, i am
asking to see if it was done correctly by someone else.

thanksUse a wye connector.

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