Insul;ated box duct

ratflingerNovember 23, 2011

On a new construction install is there a huge difference in price between insulated box duct for both supply and return verses flex duct? Obviously there will be some due to more detailed planning and placement issues, but should the increase in cost be enough to discourage me from having that done?

Also is there a rule of thumb about max return lengths, etc? My current design has about a 75' run for return and probably close to 100' for the max supply. This is using one unit for 2400sqft, with the unit in a utility room in the garage vs an attic unit. I was planning on a 2 or 3 zone system.

Thank you for reporting this comment. Undo

Also is there a rule of thumb about max return lengths, etc?"

Manual D.

    Bookmark   November 24, 2011 at 1:42PM
Thank you for reporting this comment. Undo

Get with a Nate Certified Contractor, insist on the J-manual load and a D-Manual,[In contractor wants to talk U out of the D-manual...get ride of him...many contractors will talk J manual, J-manual...but could not even explain how the D-manual is filled out and forget about zoning its over rated in benefits. Install 2 small units on the long ranch layout. this is my opinion.

    Bookmark   November 28, 2011 at 3:09PM
Sign Up to comment
More Discussions
HVAC design
In determining the HVAC system to use in our new construction,...
Advice on Attic insulation
So we just finished the second year in our house and...
Need help with selecting Eff Heat Pump replacement.
20 yr old American Std Heat Pump stopped working. ...
Seeking input on HVAC replacement
I am getting ready to do a full replacement. Current...
Blown in insulation vs spray foam
I am looking for advice. I have a home built in 2000...
Sponsored Products
Juno Trac 12 150 Watt 12 Volt White Canopy Transformer
Lamps Plus
Unfinished Solid Parawood Madrid Dining Chair (Set of 2)
Torll Wall Sconce - Brushed Nickel
$180.00 | Bellacor
Tools 4pc Place Setting - Mono
$265.00 | HORNE
Bruck | Silva Down Pendant Light
$317.25 | YLighting
Windster H Series Range Hood Ductless Kit - HDK
$55.00 | Hayneedle
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™