I have four rooms where the air conditioning outlet (a 12"x12 square box) is
located at the center of the room.
I would like to install ceiling fans in three of the four rooms and
naturally I wish to mount the ceiling fans also near the center of the room.
This means the AC vents will be inside of the "sweep circle" of the ceiling
fan blades. I just mounted the fan box but has not yet installed the fan
yet, but I think this will look odd...
I thought about relocating the AC vents but it will be quite a bit of work,
and locating it somewhere else will not be as efficient.
So I want to ask if there are some guidelines regarding AC vents and ceiling
fans being too close to each other...
If I split them in two I should place them as far apart as possible? Does
it mean I need to replace the existing solid duct with two smaller ducts?
There may be problem with space it's very crowded in the attic I have 4
hihat lights, 1 AC vent, 1 AC air intake return, a ceiling fan and a ton of
EMT pipes cris crossing. If I put the two vents one on each side of the
ceiling fan, the fan blades are 26" long but the vent only 24" from the
center so it's still overlapping a bit is that acceptable? Otherwise I will
probably need to take down the entire ceiling sheet rock and shuffle all
fixtures to make that work...
MC, without seeing the whole situation, and being ready to crunch some
numbers, it's **highly unprofessional** to be giving out detailed advice
about how to modify a distribution system, and you can easily poke yourself
in the eye with a rule of humb. Seriously, even with what little I know
about it, there's way to little data on the table. "Fools rush in ... "
Get a little professional help if comfort is important to you in this space.
I have a great guy who might be persuaded to fly down for a free two hours
consult, given the state of our sidewalks right now...
You're assuming what exactly? That there are problems that require an
AC guy. Why? Have you ever worked with an AC guy dong a relocation?
They don't do any calculations, they see if it fits and stick it in.
If they have to throw in some new flex and plug the old hole in the
trunk line, they do it without calculating turbulent air flow
effects. You're overanalizing a simple relocation.
In MC's situation it's not necessary to even more the register since
the register is barely within the sweep of the fan blades - it's not
worth the effort. In the amount of time spent with this back and
forth, I could have finished the register relocation and gotten two
coats of tape on, but more likely I would have let it lie and moved on
to another project that actually needs to be done.
I thought I was the only one *not* assuming anything. Reread thread.
Gee, lemme check...yup, I think so. As I recall, I'm usually standing on
site next to them looking at the whole picture.
Maybe so, but I've never had a claim either. I haven't been told the entire
context, I know nothing about where this is in the system, the air volume
before the change or it's relation to loads, whether the room's been
Do the duct guys often spitball installations? Gee, lemme check...yup, I
think so. How often does that turn out well? I can't say, but,
annectdotally, I am currently involved in remedial work with a system
installed by hacks. The system is an unbalanced mess and the clients are
freezing in places.
My insurer, and my association expect me to be careful when offering advice,
and I try my best to oblige them. Never had a claim, let alone a
judgement....Now if only the hacks who do it all the time would find that
reflected in the premiums, I'd have something other than satisfaction to
show for it.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.