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Posted by on December 29, 2008, 7:42 am
> On Sun, 28 Dec 2008 12:25:12 -0800 (PST), woger...@jqpx37.cotse.net
> wrote:
> >Bought a house last June, a two-story brick colonial with a gas
> >furnace and AC.
> >The supply in the master bedroom on the second floor is really weak.
> >Had a guy come out from a furnace/AC place I've been happy with so
> >far. =A0He said the only way to really find the problem directly would
> >be to start ripping up walls, which isn't worth the expense.
> >Does anyone in the home HVAC industry ever use a fiberscope/borescope
> >for this kind of thing? =A0(To inspect the ductwork for obstructions.)
> >TIA,
> >S
> There is a whole lot easier faster cheaper way. Look at what size the
> pipe is going to that room. Do and estimation of how many feet of pipe
> and elbows are hidden in the floor and walls. Do a friction loss and
> figure up how many equivalent feet of pipe you have on that run.
> There's your answer. An improperly sized run.
That's a reasonable hypothesis, but every other supply on that floor
is pretty strong.
The pipe to the weak one is longer than the one to the bathroom, but
not nearly enough to explain the difference.
> C'mon, whad you really expect? Some giant size dust ball just happened
> to be clogging the run?........maybe a nerfball fell down the pipe or
> some dead gerbil?
> Bubba
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>furnace and AC.
>The supply in the master bedroom on the second floor is really weak.
>Had a guy come out from a furnace/AC place I've been happy with so
>far. He said the only way to really find the problem directly would
>be to start ripping up walls, which isn't worth the expense.
>Does anyone in the home HVAC industry ever use a fiberscope/borescope
>for this kind of thing? (To inspect the ductwork for obstructions.)
>TIA,
>S