Featured Blog Posts (759)

DOE's Building Science Education efforts - a request

In recent years, DOE has developed the DOE Guidelines for Building Science Education - a set of job-specific checklists intended to be used by partnering training organizations, universities and certification bodies to self–certify that their programs include these important aspects of…

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Added by Stacy Hunt on July 6, 2015 at 1:31pm — 1 Comment

Building America Webinar: Put New Tools and Content on the Building America Solution Center To Work for You! July 22, 3pm ET/1pm MT/12pm PT

The Building America Program is hosting a no-cost, webinar-based training on the Building America Solution Center. The Building America Solution Center is known for its easy-to-follow, illustrated, step-by-step guides for installing the measures that make up high-performance homes.  A number of updates have been implemented that offer exciting new tools and content that builders and industry professionals can put to work immediately.  Tune in to this webinar to hear about the latest Solution…

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Added by Stacy Hunt on July 6, 2015 at 1:27pm — No Comments

ENERGY EFFICIENCY RETROFITS.....IN NUMBERS WE TRUST

There has been much ado about the recent paper published by E2e; Do Energy Efficiency Investments Deliver? Evidence from the Weatherization Assistance Program, the final word on which is yet to be written.

Decades of experience and verification prove energy efficiency programs deliver huge benefits to consumers and the environment - and these benefits far exceed the costs. But numbers can be distorted and therein is the bane of Energy efficiency projects.

E2e has some heavy…

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Added by Bijou Lulla on July 5, 2015 at 8:05pm — 2 Comments

More Ways in Which You Can Use Your Laser Measuring Tool

laser measure devices are quickly replacing the traditional metal tapes due to their effectiveness and accuracy. While the simplest use of this kind of artifacts is measuring the distance between two points, there is a wide variety of extra applications you can find for your laser measurer.

Below you’ll find a large list of additional applications for your laser measurer.

Large storage facilities equipped with…

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Added by Lars olsen on July 3, 2015 at 11:00am — No Comments

Embodied Energy: Minimizing Waste with Off-Site Construction

Matthew Wadlund is adding infill housing stock to the Oceanview neighborhood of Berkeley, California, where he is replacing a single-family house with four single-family, three-story detached houses. The wall panels in Matthew's Oceanview Orchard homes are constructed off-site and craned into place, resulting in maximum material efficiency and near-zero waste. Tom White, Home Energy's publisher, spoke with Matthew about his decision to prefabricate wall panels…

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Added by Tom White on June 23, 2015 at 5:01pm — 1 Comment

Water Conservation

By now you are probably aware of California’s drought. But other states are experiencing droughts—and where there aren’t droughts, there are probably floods. Water and energy consumption are becoming more and more closely connected, and the situation is not likely to improve. Here are some of the ways our clients experience these connections in their homes.…

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Added by Home Energy Magazine on June 29, 2015 at 2:06pm — No Comments

Revisiting Heat Pump Water Heaters

Most of the recent trade press seems focused on tankless water heaters.  Whether used in whole-home or point-of-use configurations, tankless water heaters solve some of the efficiency problems associated with storage tank heaters.  While these systems are worthy of discussion,…

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Added by Charlie Hewitt on June 10, 2015 at 11:30am — 1 Comment

Participate in a study on Healthy, Efficient new homes

Healthy Efficient New California Homes – Pilot Study
Study participants wanted. Receive up to $560.

Lawrence Berkeley National Laboratory seeks volunteers who will make their home available for a three-week research study. The pilot study will occur in July…

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Added by Wanyu Rengie Chan on June 4, 2015 at 7:30pm — No Comments

Energy bills up? There may be humans in your building

Reposted from i.e., the Center for Energy and Environment's Innovation Exchange blog -- http://mncee.org/Innovation-Exchange/ie/

As you read this blog post, what room are you in? How’s the lighting? How’s the temperature? Do you control their levels — or is someone else, somewhere else, running the show? 



About 40% of energy use in the U.S. is consumed in…

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Added by Lester Shen on June 3, 2015 at 10:04am — 6 Comments

Book Review—Green Building Illustrated

For those not familiar with “Ching books”, they’re essentially the gold standard for visual architecture reference and aid in the design process. Architect Francis D.K. Ching’s series of textbook-size volumes go through conceptual to intimate detail of design and construction for both novice and professionals alike. They’re commonly noted as the best and easiest-to-understand references for design…

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Added by Home Energy Magazine on June 23, 2015 at 1:58pm — No Comments

Storytelling Our Way to a Better Life



The poet Muriel Rukeyser once said something like this: The Universe is not made of atoms; it’s made of stories. I think that conferences are made of stories too, like the one I’m at this week, the National Energy and Utility…

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Added by Jim Gunshinan on June 23, 2015 at 5:00pm — 1 Comment

Unexpected Blessing

When I received an email from Larry Zarker of BPI, informing me that I had been inducted into the BPI Building Performance Hall of Fame, I thought it must be a big mistake. Then I looked at the list of previous inductees and was sure it was a mistake! I haven’t even done a blower door test all by…

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Added by Jim Gunshinan on May 27, 2015 at 4:30pm — 6 Comments

Survey - Healthy Efficient New California Homes Study

Lawrence Berkeley National Laboratory is conducting a research study on new homes in California. We invite you to participate in this survey if you live in a: 

  • House or townhouse or duplex,
  • AND if your home was built in 2002 or…
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Added by Wanyu Rengie Chan on May 28, 2015 at 7:00pm — No Comments

Why Don't Homeowners Spend Money on Energy Saving Upgrades??? Blame "Cognitive Biases"

A great transcript from a recent NPR "Morning Edition" broadcast about a recent California survey on water conservation efforts. The results are exactly what we find with energy conservation... When homeowners were asked what actions will save water, most said "taking shorter showers" (turning down the heat), or "keeping water off while brushing" (wearing a sweater) which of course is a complete mismatch of real saving efforts, like installing low-flow toilets (installing insulation).- which…

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Added by Jose Macho on May 18, 2015 at 4:30pm — 5 Comments

TV Sets, Homes, and QCI

I have had the pleasure of talking to a lot of wonderful people about the challenges of the BPI QCI Certific ation, and I am getting some unique insight.  I started out working on my book – Residential QCI Handbook on a quest to help candidates who are preparing to take the exam. …

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Added by Paul Raymer on May 18, 2015 at 8:17am — No Comments

Revisiting Electrification

I must admit that I am still having trouble getting my head around this idea. But the arithmetic is fairly simple: an 80% reduction in carbon emissions simply can’t be achieved without drastic cutbacks in residential natural gas use. In the residential sector, natural gas burned on site is responsible for about one quarter of carbon emissions. We can use carbon-free electricity generated…

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Added by Home Energy Magazine on May 4, 2015 at 12:37pm — 7 Comments

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 8:24am — 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 7:00pm — 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 10:19am — 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 9:08am — 4 Comments

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2018 Habitat X Summer National Conference at Big Sky Montana

June 27, 2016 to June 29, 2016
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Stuart Langley liked David Byrnes's blog post Strategies for Hiring and Interviewing for Home Performance Professionals
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Kevin Miller replied to Bob Krell's discussion What Do You Do When You Find Suspected Mold? in the group Healthy Indoors (IAQ)
"Visual inspection can only confirm the presence of mold, not the absence.   That said,…"
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Armand C Magnelli replied to Don Fugler's discussion joining ducts in the group HVAC
"I often suggest pop-rivets as an alternative to sheet metal screws for both clothes dryer duct work…"
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Kevin Miller replied to Bob Krell's discussion What Do You Do When You Find Suspected Mold? in the group Healthy Indoors (IAQ)
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Daniel Cullen joined Building Performance Institute's group
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Building Performance Institute (BPI)

BPI is the nation's premier standards development, quality assurance and credentialing organization…See More
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Daniel Cullen replied to Bob Krell's discussion What Do You Do When You Find Suspected Mold? in the group Healthy Indoors (IAQ)
"Can anyone tell me exactly HOW mold sampling impacts the mold remediation process or protocol? Why…"
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Daniel Cullen joined Bob Krell's group
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Healthy Indoors (IAQ)

The Healthy Indoors group is focused on indoor air quality (IAQ), mold, moisture control, radon,…See More
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