Featured Blog Posts – April 2015 Archive (7)

Shades of Gray in Residential Construction Morality

I was called in to perform a last minute duct test for a modular home builder.  He was all in a dither to have a duct test and a blower door test done on a Friday so that he could get his Certificate of Occupancy (CO) so the homeowner could move in the following Monday.  He said that he’d just found out that he needed these tests.  The building inspector asked for them at the last minute!

I was glad to do it partially because it’s good to have builders aware of what is going on…

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Added by Paul Raymer on April 27, 2015 at 5:24am — 22 Comments

Residential Electric Load Disaggregation

“What gets measured gets managed” is a quote often attributed to the venerable management expert Peter Drucker.  The simple but powerful idea behind the statement is that without quantitative measurement, it is impossible to benchmark the current state and manage progress toward a desired state.  Variations of the quote abound but it is difficult to trace the quote to a specific book, paper, or speech.  As it turns out, an earlier incarnation of this idea predates Drucker.

Renowned…

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Added by Charlie Hewitt on April 26, 2015 at 4:00pm — No Comments

Which version of CAZ testing is used for BPI/QCI testing?

Combustion Safety Testing is one of the most important components of the HEP QCI exam.  Because it is linked to the safety of the occupants, it has been a fundamental element of BPI exams since the inception of the organization.  As we make homes tighter and more energy efficient, we cut back on the…

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Added by Paul Raymer on April 20, 2015 at 4:13am — No Comments

What does it take to be a certified Home Energy Professional Quality Control Inspector (HEP QCI)?

A quality control program requires knowing a lot about a lot of different subjects.  A HEP (BPI Home Energy Professional) Quality Control Inspector is qualified to compare a project outcome to the project requirements or work scope so that the final result is satisfactory to both the program and the homeowner.  It requires both technical knowledge as well as “soft skills” which are…

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Added by Paul Raymer on April 14, 2015 at 4:03am — No Comments

Working with Roofing Professionals

GAF has introduced training called the Home Energy Saver Certificate - Building Science for the Roofing Professional.  It's online, ondemand training narrated by Shane Monday of HUB Energy Group.  The professional roofing contractor sees a much larger number of existing homes than many other types of contractors. We're working to connect them with Home Energy Professionals.

You can check out the training we developed and register for free at:…

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Added by Martin Grohman on April 8, 2015 at 7:19am — No Comments

150 Years to 10

Houses should last a very long time.  The Knap of Howar was built approximately fifty-five hundred years ago.  Pueblos in New Mexico were built over a thousand years ago.  Saltford Manor House, in Somerset, England was built sometime in the twelfth century and is still occupied!  These houses are built of extremely durable materials like stone or adobe.  But even the wooden houses…

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Added by Paul Raymer on April 6, 2015 at 4:26am — No Comments

Programming in-floor electric radiant heat, is it worth it?

Does a programmable thermostat for an in-floor electric radiant heat system add efficiency, or is it faux efficiency?

My electrician installed in-floor electric heat in a second floor bathroom remodel I recently completed, and he used a non-programmable therm. I asked him to change it, and he pushed back that there is little efficiency gain because the thermal mass of the mud bed and tile create a long cycle time to raise the temperature. Better to leave the temperature set, and have…

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Added by Sean McLoughlin on April 2, 2015 at 6:08am — 4 Comments

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