Duct flow Question.

Posted by amdx on July 26, 2008, 9:30 pm

I'm wondering about restricting flow in duct work.
My home has three bdrms at one end, and has a dining, kitchen and livingroom
at the other end. The hvac system has 10 ducts, 5 at one end and 5 at the
other.
I'm thinking about magnetic covers to close 5 ducts in the dining, kitchen
and livingroom end at night and just cool the bdrms and reverse that during
the day.
( I would close the bdrm doors during the day)
Because of the layout of the house and the position of the return air duct,
I think this would work well, but I have a concern.
Is there a problem with restricting the flow through the duct work? And how
much is to much?
Thanks, Mike

Posted by KJPRO on July 26, 2008, 10:44 pm

> I'm wondering about restricting flow in duct work.
> My home has three bdrms at one end, and has a dining, kitchen and
> livingroom
> at the other end. The hvac system has 10 ducts, 5 at one end and 5 at the
> other.
> I'm thinking about magnetic covers to close 5 ducts in the dining, kitchen
> and livingroom end at night and just cool the bdrms and reverse that
> during the day.
> ( I would close the bdrm doors during the day)
> Because of the layout of the house and the position of the return air
> duct, I think this would work well, but I have a concern.
> Is there a problem with restricting the flow through the duct work? And
> how much is to much?
> Thanks, Mike

Problem, Yes.
Too much, you wouldn't know.

Problem is, your air conditioner is sized for your home, not just part of
it. It also requires proper air flow for efficiency and proper operation.

My best advice to you is not to fork with something where you don't
understand what effects you are causing.
That is, unless you like to create problems that may lead you down the road
to a new system.

Posted by over a barrel on July 26, 2008, 11:14 pm

> I'm wondering about restricting flow in duct work.
> My home has three bdrms at one end, and has a dining, kitchen and

livingroom

> at the other end. The hvac system has 10 ducts, 5 at one end and 5 at the
> other.
> I'm thinking about magnetic covers to close 5 ducts in the dining,

kitchen

> and livingroom end at night and just cool the bdrms and reverse that

during

> the day.
> ( I would close the bdrm doors during the day)
> Because of the layout of the house and the position of the return air

duct,

> I think this would work well, but I have a concern.
> Is there a problem with restricting the flow through the duct work? And

how

> much is to much?
> Thanks, Mike

Currently the system is designed to keep the entire interior structure
relatively comfortable.

IOW If you dont care about the rest of the place but just want to keep the
garage comfortable then suggest move the thermostat to the garage, though in
doing so the rest of the place might turn into a meat locker.

A very simplistic view above and though there are certainly several other
important considerations such as face velocity and dewpoint for proper
edhumidification it still always comes back to how many zones are there to
be thermostatically controlled--( and so it goes without saying each zone
NEEDS to have its own thermostat at the *very* minimum) .

--

--

Posted by on July 26, 2008, 11:34 pm

>I'm wondering about restricting flow in duct work.
>My home has three bdrms at one end, and has a dining, kitchen and livingroom
>at the other end. The hvac system has 10 ducts, 5 at one end and 5 at the
>other.
> I'm thinking about magnetic covers to close 5 ducts in the dining, kitchen
>and livingroom end at night and just cool the bdrms and reverse that during
>the day.
>( I would close the bdrm doors during the day)
> Because of the layout of the house and the position of the return air duct,
>I think this would work well, but I have a concern.
> Is there a problem with restricting the flow through the duct work? And how
>much is to much?
> Thanks, Mike
>

Some of the hair-brained shit that home owners come up with simply
amazes me.

Posted by Noon-Air on July 27, 2008, 8:36 am

I suppose you wanna partition off the parts of your refrigerator and your
oven that you are not using too??

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