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: 302

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

B Eric Bell liked Bob Krell's group Healthy Indoors (IAQ)
2 hours ago
John Krochmalny posted a discussion

Psychrometric Chart Training

Looking through the various areas of this site, I didn't see too much information or training on…See More
5 hours ago
Profile IconMike Malek, Avery T. Phillips and Sarah Burger joined Home Energy Pros Forum
6 hours ago
Dannie Jackson's blog post was featured

Core Heat And Other Concepts

  In some places the use of solar heated liquids from hot water solar panels are used to provide…See More
10 hours ago
Michael Duclos replied to Brad Cook's discussion Too many Heat Pump Water Heaters in a basement?
"I’ve been looking into Sanden for a multi-family PH near Laconia, NH, ASHRAE 99.6% temp is…"
10 hours ago
Profile IconTroy Spindler, Mike Berg, Andrew McDowell and 4 more joined Home Energy Pros Forum
yesterday
David Butler replied to Brad Cook's discussion Too many Heat Pump Water Heaters in a basement?
"theoretically, let's say you perfectly isolate the HPWH from a heat source. The HPWH's…"
Monday
David Butler replied to David Butler's discussion How would you insulate this roof?
"Interesting idea. Commercial roof on a slope! Typical density for roofing spray foam is 2.5 to 3.0…"
Monday

Photos

Loading…
  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service