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. 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.)
On Sun, 28 Dec 2008 12:25:12 -0800 (PST), email@example.com
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.
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?
Although Bubba and KJPro are right, there still remains the possibility of
broken duct. Use your flashlight, look around at any exposed ductwork you
can find. Replace the air filter [a clogged air filter will reduce total
airflow]. If all else fails, it might be a poor design. Most designs fail
in the return air sizing [too small.] If you are willing to pay for the
time, a qualified HVAC contractor who's licensed in your area, and
knowledgeable will find and solve your trouble, but not for free.
Once on a new build resi job a long time ago I watched a clean up guy
do a bang up job sweeping the floors. Right into the supply openings
in the floor.
It wouldn't take much to block a piece of oval duct shoved in the wall
cavity feeding the upstairs.
The guy who checked out the ductwork for me says he's seen all sorts
of crazy stuff. Like a plumber who stood on ductwork in a floor and
crushed it, then covered the floor up. And a homeowner who had this
expensive refinish job done on their basement, then discovered they
forgot to look into putting in ductwork.
On Mon, 29 Dec 2008 04:49:09 -0800 (PST), firstname.lastname@example.org
A friend of mine who use to do concrete work once told me that some
guy he was working with took a dump on a freshly poured basement floor
then floated the hunk of shit into the fresh concrete. How nice..
Right. The guy who came out looked around and couldn't find anything;
he spent a long time looking.
The house is really old (1948). I'm sure it's had a number of
upgrades in that time. The guy who came out pointed out a number of
stupid things. E.g. there are two small bedrooms on the second floor
with two supplies eacha no return.
There's been lots of years for people to have done poor design and
Yeah, not expecting free. Quite happy to pay a reasonable fee, though
of course I would give up if the $$ required got close to what it
would take to just put in room-only heating and cooling.
That's why I'm wondering if any qualified contractors _do_ use scopes,
because I can't see any other way to diagnose the problem. (One
poster here already commented that one outfit does.)
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