John Porterfield
  • Male
  • Oak Park, IL
  • United States
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A Spot for Tech Questions (Spot! Here Spot!)
1 Reply

My firm provides post-installation inspections and owners representative services - independent guidance during installation similar to independent construction manager.  In these (of many) roles we…Continue

Started this discussion. Last reply by Diane Chojnowski Oct 17, 2012.

 

John Porterfield's Page

Latest Activity

John Porterfield replied to Johnny Ritzo's discussion Selecting a Water Heater
"The American Council for Energy Efficient Economy water heater tool provides helpful comparison of technology, service life, installed cost, and cost to own.  The pace of energy efficient technology innovation is brisk, so installed costs and…"
Jul 11, 2013
John Porterfield's discussion was featured

Systematic Study of Retrofit Practices

I have questions about roof cavity insulation, have input from local experts, though welcome hearing from those who are practicing in cold climate and hopefully near/at the cutting edge of Wx knowledge and  building science.I am specifying flat roof insulation for projects that include 1) roof cavity (separate rafters and ceiling joists, "roof crawl space") and, 2) rafters with deck and ceiling finish attached top and bottom.  Building with roof cavity has solid brick walls with retrofitted…See More
Jun 20, 2013
Sean Lintow Sr replied to John Porterfield's discussion Systematic Study of Retrofit Practices in the group Best Practices (Residential)
"I was hoping someone in your neck of the woods would have replied & I can't seem to find the SWS so let me just offer a few quick thoughts - SWS are not the only way to skin a cat & if best practice or other trusted information says…"
Jun 15, 2013
John Porterfield added a discussion to the group Best Practices (Residential)
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Systematic Study of Retrofit Practices

I have questions about roof cavity insulation, have input from local experts, though welcome hearing from those who are practicing in cold climate and hopefully near/at the cutting edge of Wx knowledge and  building science.I am specifying flat roof insulation for projects that include 1) roof cavity (separate rafters and ceiling joists, "roof crawl space") and, 2) rafters with deck and ceiling finish attached top and bottom.  Building with roof cavity has solid brick walls with retrofitted…See More
Jun 12, 2013
John Porterfield replied to Doug Horgan's discussion Geothermal real-world performance
"Hi Joseph, I have a client w/ three GeoX systems in a 4000+ residence that clearly do not function properly & have ruled out envelope deficiencies that would explain discomfort and high use.  I want to recommend retro-commissioning and ask…"
Mar 4, 2013
John Porterfield commented on Home Energy Magazine's blog post Home Non-Energy - Preparing Homes for Future Blackouts
"This is a great concept.  I had approached the Illinois Institute of Technology with this concept as a student "Interprofessional" project (IPRO) some years back and will repeat this suggestion.  There is no "one size fits…"
Jan 7, 2013
John Porterfield joined Tom White's group
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Trainers and Mentors

Share your experience with different training and mentoring methods. Learn about new training tools, certifications and training programs.See More
Oct 17, 2012
John Porterfield 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 needs to find it's way to the dust bin of history?See More
Oct 17, 2012
Diane Chojnowski replied to John Porterfield's discussion A Spot for Tech Questions (Spot! Here Spot!)
"John, You're welcome to start a group on this topic. Sounds like a great idea! "
Oct 17, 2012
John Porterfield's discussion was featured

A Spot for Tech Questions (Spot! Here Spot!)

My firm provides post-installation inspections and owners representative services - independent guidance during installation similar to independent construction manager.  In these (of many) roles we are continually confronted by less than specified or agreed installation quality.  Difficulties inherent with work in existing construction is a constant reality that installers face.  We want to help installers get closer to effective installation WITH best practices and help owners and EE programs…See More
Oct 17, 2012
John Porterfield posted a discussion

A Spot for Tech Questions (Spot! Here Spot!)

My firm provides post-installation inspections and owners representative services - independent guidance during installation similar to independent construction manager.  In these (of many) roles we are continually confronted by less than specified or agreed installation quality.  Difficulties inherent with work in existing construction is a constant reality that installers face.  We want to help installers get closer to effective installation WITH best practices and help owners and EE programs…See More
Oct 17, 2012
John Porterfield joined David Eggleton's group
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1000 Home Challenge

Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from which we might propose when engaging with people, the ones who choose.See More
Oct 17, 2012
John Porterfield joined James White's group
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Building Simulations

Work collaboratively to find easier, more accurate and better ways to model, predict and verify a home's energy consumption.
Oct 17, 2012
John Porterfield added a discussion to the group HVAC
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Now for Something Different

Now that my wife and I are involved in BPI training and plan to conduct field test at our residence, the work scope for integrated HVAC has become more involved.   We'd like to use our efficient tankless boiler AND have old style equipment remain functional for use as a BPI field test site.We're looking for an HVAC installer who has thoroughly mastered combined heating w/ air/water option.I have also posted at Heating Help dot com > search Therm_lag (me) and scroll to Integrated…See More
Oct 17, 2012
John Porterfield replied to Andrew Vidal's discussion Looking for a good load calculation software in the group HVAC
"To determine heating capacity required for existing building one may simply extrapolate design load by graphing metered use to outdoor temperature for a series (preferably a minimum of 12) of billing periods.  See HeatingHelp dot com >…"
Oct 17, 2012
John Porterfield joined Allison A. Bailes III's group
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HVAC

HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part of home energy use, understanding HVAC is critical.See More
Oct 17, 2012

Profile Information

Company
eZing, Inc
Professional Certification
BPI, RESNET
Professional Interests
Figuring out smart things to do in buildings. Being a good person. Making sure things that are best kept in balance are, and things not not.
Website URL
http://www.ezing.pro
Blog URL
http://ezing.tumblr.com
Twitter ID
https://twitter.com/EnergyAuditing
Facebook Page
http://www.facebook.com/pages/eZing-Home-Energy-Audits/370653477511
LinkedIn Profile
http://www.linkedin.com/profile/view?id=9106639&locale=en_US&am...

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Hal Skinner added a discussion to the group HVAC
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Old ductwork efficiency file

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What an RCC can do with no R- insulation in the walls.

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