HVAC-Talk: Heating, Air & Refrigeration Discussion banner
1 - 8 of 8 Posts

GoodOlJoe

· Registered
Joined
·
29 Posts
Discussion starter · #1 ·
Hello new construction and remodeling air duct techs.
I am the owner of a 40+ yr family HVAC-R company in Phoenix AZ,

I am presently doing a complete gut, layout and install of a 3 BR home in the Phoenix area.
This is a flat roof home and currently the ceilings have been removed from all areas where I am installing the new duct system, so all good there.

My question, (for those honestly have more than a little experience air duct systems):

Once the new air duct system is installed and the ceiling is then re-installed, any branch dampers will be inaccessible for adjustment.
Would it cause any problems if the needed dampers were installed down stream toward the end of the runs?
I'm talking far enough in so the face air flow will not be terribly disrupted but can still be adjusted by sticking an arm 18" to 24" into the register box to make any necessary small adjustments?

I'd really appreciate what your thoughts and, and even better, what is your experience with this?

Thank you,
GoodOlJoe
 
I remember ,at least I think I remember, from a RSES Duct 2 day Class, that the best location is right at the branch takeoff at the main trunk. This is for ,when there is any air noise ,the noise is less heard at the registers due to the distance from the damper. Other than that you take your own chances. Even at 24" from the register how can you get to the damper adjustment arm and tightening nut?
 
Rarely are the dampers adjusted after installation & startup , especially if sized by manuals j & d, may not even be desired on most if not all runouts.
Size your runouts, boots & registers correctly and leave the dampers out.
 
As far from the supply grill as possible.
With good design there should be very little adjustment. A good system should be almost self balancing.
 
Save
Discussion starter · #6 ·
Hey thanks for the help! Yes you're right, but in this case it would be impossible so I'm trying to find out if anyone else has done what I'm thinking of doing with any success.
 
Discussion starter · #7 ·
Thanks for the advice man. Yes with a good design all is well but there are a couple runs in this particular home I'd like to have the option to damper if needed. Thanks again for your help.
 
1 - 8 of 8 Posts
You have insufficient privileges to reply here.