Derin Williams
  • Portland, OR
  • United States
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Derin Williams's Page

Latest Activity

Derin Williams replied to Evan Riter's discussion Making crawlspaces conditioned space
"Jerry,   Why duct seal when the ducts are brought into conditioned space? Maybe to improve air flow to the registers?   Thanks"
Jan 26, 2012
Derin Williams is now a member of Home Energy Pros
Jan 5, 2012

Profile Information

Company
Efficiency Service Group
Professional Certification
BPI Building Analyst/Envelope, PTCS, PATS, SBA
Professional Interests
Tiny Houses

Comment Wall (1 comment)

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At 9:34pm on January 9, 2012, Diane Chojnowski said…

Hi Derin,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!

Don't forget to upload your profile photo. And add your location on our Member Map!


Thanks!
Diane, HEP Moderator

 
 
 

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Bud Poll replied to Chad Mcaulife's discussion BPI QCI Cert.
"I can't think of any test I've ever taken where I wasn't able to determine what I…"
12 hours ago
jerry gentile replied to Chad Mcaulife's discussion BPI QCI Cert.
"you are spot on my friend-- during the exam I said this is ridiculous--- I have bpi certs for…"
17 hours ago
Eric Kjelshus commented on Jeremy Begley's blog post The Home Envelope : Does it Really Matter in a Heat Loss Caculation
"IT all matters,  I lot of sealing,  A lot of air barrier.  A lot of "R" A…"
yesterday
Michael Dunseith posted a status
"BPI Infiltration and Duct leakage (IDL) Certified"
yesterday
Jeremy Begley posted a blog post
yesterday
Kim Burnett joined Sean Lintow Sr's group
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Best Practices (Residential)

Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what…See More
yesterday
Kent Mitchell commented on Adam Swain's blog post Top Worst Crawl Space Insulation Ideas
"Hi Adam - It sounds like you may be referring to enclosed crawlspaces - Here in the NW we've…"
yesterday
peter chang replied to Damien Greenfield's discussion Is there is cost saving for you in having a tankless water heater?
"I think it is quite possible the greatest savings will be realized by the lowest volume users. I…"
yesterday

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