This furnace was installed two years ago in a conditioned basement.  The ductwork is a thin flexible plastic like that of a clothes dryer (but with a 6" diameter).   This is the second one that I've seen in the past year (Oregon).   Is this up to code?

 

Views: 295

Replies to This Discussion

The plastic would need to be rated for the temps the furnace delivers.  Is there a tag on the plastic?  The maufacturer would have the specs as to temp and application.  It isnt pretty but it is functional.  The specs on the plastic will give you the information you need but you might have to call the manufacturer.  I personally would be very suspect about it.   Have you performed a Temp Rise on the furnace?
This is crap work and should be redone, but is allowed by code.
I agree that the quality of work on this radial system can be called into question. But I a, very surprised to hear this would meet code. Based on the 2009 IECC, that ductwork being in unconditioned space should have a minimum R-value. Here is MA and RI, inspectors hold the contractor to this spec, R-8 outside the building envelope and R-6 for inside - in a basement like this for example. This may be a place to start regarding this particular job, looks pretty recent...
I agree that the quality of work on this radial system can be called into question. But I am very surprised to hear this would meet code. Based on the 2009 IECC, that ductwork being in unconditioned space should have a minimum R-value. Here is MA and RI, inspectors hold the contractor to this spec, R-8 outside the building envelope and R-6 for inside - in a basement like this for example. This may be a place to start regarding this particular job, looks pretty recent...

RSS

Discussion Forum

HVAC integration – the past, the present, and the future

Started by Igor Mitbarg. Last reply by Lucifer Prescott Apr 11. 1 Reply

Target superheat formula

Started by Miguel Orduno. Last reply by John Proctor Feb 18, 2015. 6 Replies

Now for Something Different

Started by John Porterfield. Last reply by John Porterfield Jan 12, 2015. 2 Replies

Latest Activity

Caleb Hill is now a member of Home Energy Pros
6 hours ago
Mike Pagozalski replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"I would strongly recommend having an actual licensed electrician come out evaluate the entire…"
11 hours ago
Green ID posted blog posts
yesterday
Brad Cook replied to Brent Shapiro's discussion Investigating 3257KWH monthly usage issue.
"Jason's suggestion my be a quick way to isolate the high load, IF you have an old style meter…"
yesterday

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service