I'm in the process of converting a brake shop into our home (don't
worry, all the environmentals came up clean) (http://
1923mills.blogspot.com for pictures). I'm about to hire an HVAC
contractor to install some ducts for A/C (it's a slab on grade with
cathedral ceilings, so heat will be provided using radiant tubes).
It's a loft style building so there is a huge open area (about 1200
sqft with a cathedral ceiling 22ft up to the center) and a few smaller
rooms with 9 ft ceilings (under the loft). For the big area what I
would like to see is commercial style exposed spiral ducting which
would work nicely aesthetically for the space. The other rooms would
have traditional resi ductwork. I have a few questions.
1) I don't know anything about flex duct other than it sounds like
it's often used inappropriately. If the contractor wants to use flex
duct for the smaller rooms what should I watch for?
2) The size of the large area is obviously relatively huge compared
to the small rooms. Does that matter? It seems like there would need
to be some sort of balancing. Is that true? What should I hear from
the contractor on that front?
3) Anything else I should know so that I can be a reasonably informed
customer? I seem to be bumping into some specialisation issues as far
as commercial people not wanting to do resi and resi people not
comfortable with spiral.
Thank you all so much.