Pretty--But---Wrong

[Charley L. Bottger]

What do you see wrong with this duct install?????

[Brian A. MacNeish]

Originally Posted by cbottger

What do you see wrong with this duct install?????

Duct vapour barrier not sealed. Can lead to condensation in insulation when A/C is running......especially in very warm/hot humid weather.

[mnahrgang]

Originally Posted by Brian A. MacNeish

Duct vapour barrier not sealed. Can lead to condensation in insulation when A/C is running......especially in very warm/hot humid weather.

Brian,

Specifically speaking, what is you are looking at in the pictures that leads you to say that? Is it the white insulation visible on the large duct by hanger? Or are you looking at something else?

[wsiegel]

Outstide of an odd installation technique, I dont see anything wrong.

[Charley L. Bottger]

Originally Posted by wsiegel

Outstide of an odd installation technique, I dont see anything wrong.

I take it you have never professionally installed duct

[Charley L. Bottger]

Originally Posted by Brian A. MacNeish

Duct vapour barrier not sealed. Can lead to condensation in insulation when A/C is running......especially in very warm/hot humid weather.

Plenty of overlap at the seams no condensation going on here.

[Gary T. Heller]

Not properly supported and the duct laying against the insulation is not straight enough.

[Dennis R. Goudreau]

partially supported by a 2X4

[Peter Doane]

Improper duct support. Metal (plumbers tape)

[Marc D. Shunk]

From the IMC:
603.10 Supports. Ducts shall be supported with approved
hangers at intervals not exceeding 10 feet (3048 mm) or by
other approved duct support systems designed in accordance
with the International Building Code. Flexible and other fac -
tory-made ducts shall be supported in accordance with the
manufacturer’s installation instructions.

[Doug Edwards, CMI]

Charley,
Is the large trunk line metal snap lock wrapped in insulation? First thing I noticed is; why the hell did they put it so high up into the attic into the hotter area of attic? Next thing I see is it doesn't look like professionally constructed connections where the flex joins the collars; no zip ties, hard cast or for that matter even duct (code) tape. Some of the flex connections are too close together (cause a drop in pressure along the trunk). just to name a few things.

[Charley L. Bottger]

Originally Posted by pdoane

Improper duct support. Metal (plumbers tape)

The main trunk line was metal and plumbers strapping is the excepted method for metal duct, for flex duct its not allowed.

[Charley L. Bottger]

Originally Posted by gheller

Not properly supported and the duct laying against the insulation is not straight enough.

I did not have a problem with any of the supports and as for the small turn in the return air duct lying down on the attic insulation not a problem with me.

[Charley L. Bottger]

Originally Posted by dedwards

Charley,
Is the large trunk line metal snap lock wrapped in insulation? First thing I noticed is; why the hell did they put it so high up into the attic into the hotter area of attic? Next thing I see is it doesn't look like professionally constructed connections where the flex joins the collars; no zip ties, hard cast or for that matter even duct (code) tape. Some of the flex connections are too close together (cause a drop in pressure along the trunk). just to name a few things.

Master Chief now we are getting some where Thank you.

The trunk line is snap lock and yes they did not use wye connections on the two bottom connections and the two bottom connections should come off of the side not the bottom.

The ducts were installed in the hottest part of the attic because a upflow was installed in the up right position with the supply plenum on the top. should have used a horizontal or a downflow so the duct could be installed at a lower level.
They did use zip ties they were under the insulation as they should be. I did not have a a problem with the spacing of the drops.

I did not write up any corrective action on this just very poor craftmanship

[bzimbelman]

Originally Posted by cbottger

Master Chief now we are getting some where Thank you.

The trunk line is snap lock and yes they did not use wye connections on the two bottom connections and the two bottom connections should come off of the side not the bottom.

The ducts were installed in the hottest part of the attic because a upflow was installed in the up right position with the supply plenum on the top. should have used a horizontal or a downflow so the duct could be installed at a lower level.
They did use zip ties they were under the insulation as they should be. I did not have a a problem with the spacing of the drops.

I did not write up any corrective action on this just very poor craftmanship

For those of us who are not HVAC gurus, what is the functional problem with this installation?