DIYbanter - View Single Post

On 3 Apr 2006 12:46:50 -0700, wrote:

Hello everyone, I have a 2 story home with a basement approx 3/4
finished. Each level is approx 1500 sq ft. My hvac unit is a Trane XV
80 ( gas ) that was installed about 5 yrs ago by the previuos owners.
The house is about 15 yrs old so I dont think the insulation is all
that bad. My problem is that about 30% of the first floor which is the
family/tv room has a vaulted ceiling and the master bedroom on the 2nd
floor sits directly above a 2 car garage. I am going to assume ( yes I
do know the ass out of you and me saying ) that the unit that was
installed is sufficent. I did do some homework and found that the 2nd
stage wasnt even hooked up, not even a jumper, so I jumped the
terminals and the 2nd stage comes on after a delay of about 10 min.
There was a big difference in the fan speed and made somewhat of a
difference. It still gets extremely cold in the master bedroom, I guess

from the garage ( We live in NJ so it can get pretty cold ). I had
installed an R-30 in the attic on top of the existing R-19, so the
combination of the two should be good. I am also going to remove the
ceiling in the garage and do the same (this should help with the
bedroom), and go for 2 new and well insulated garage doors. Would it be

worth putting the 1st and 2nd floors on two zones.With the heating
prices rising, I am not all that that comfortable for the price we are
paying, wouldnt be so bad if we were comfortable. We keep all the vents

in the basement closed because that space is rarely used. I have all
the access to both main feeds in the unfinished portion in the basement

and I can "do it myself", also would wrapping the ductwork also be
worth it. Sorry for the long story, but I wanted you to have all the
information to base your answer. Thanks for any info on this subject

Other than "we are not all that comfortable", you haven't described
what problem you're trying to solve.

(I'm guessing, although you don't ever say, that you're using
forced hot air, are are talking about your heating system)

During cold days, is the furnace running more or less
continuously? If not, then you have reserve heating capacity.

Which rooms are too cold, and are any too hot?
The basic principle is pretty easy: You want more
air into and out of the rooms that are too cold, and
less air into and out of the rooms that are too hot.
If you have a space with much wider temperature swings
than the others, (in other words, it gets too hot
while the heat is running, and then gets cold before
the other rooms) then you need to restrict the amount
of air that moves through that room when the heat isn't
on. (Stairs are a frequent problem), insulate it better,
or put that space on a separate zone. If you have a space
that you want heated on a different schedule than the
rest of the house, (That rarely used basement, and
possibly bedrooms) then again, they want a separate zone.
I dunno how easy it is to zone forced air, though.