The most recent blogs at Green Building Advisor

Why Don’t Green Buildings Live Up to Hype on Energy Efficiency?

Posted on June 19, 2017 by Richard Conniff in Guest Blogs

Not long ago in the southwest of England, a local community set out to replace a 1960s-vintage school with a new building using triple-pane windows and superinsulated walls to achieve the highest possible energy efficiency. The new school proudly opened on the same site as the old one, with the same number of students, and the same head person — and was soon burning more energy in a month than the old building had in a year.

Comfort Problems Related to Radiation

Posted on June 16, 2017 by Martin Holladay in Musings of an Energy Nerd

Our homes include insulation to reduce heat flow through floors, walls, and ceilings. Some parts of our homes’ thermal envelopes (for example, insulated ceilings) are well insulated and have a high R-valueMeasure of resistance to heat flow; the higher the R-value, the lower the heat loss. The inverse of U-factor. ; other parts (like windows) have a much lower R-value. But during the winter, as long as we have an adequate heating system that keeps the indoor air temperature at 72°F, we should be comfortable — right?

Not quite. Even when the air temperature is held to a steady 72°F, occupants can be cold during the winter — especially if they are standing or sitting next to a large window.

Done — Well, Almost

Posted on June 15, 2017 by Carl Seville in Green Building Curmudgeon

It has been a busy winter and spring, wrapping up construction. Work on the house and carport were essentially complete in March; however, delays in locating the pervious pavers and an installer for the pervious concrete kept us from completing the site work until mid-April.

We wrapped up landscaping and received our Certificate of Occupancy on April 29th.

Climate Change Is Just a Theory

Posted on June 14, 2017 by Allison A. Bailes III, PhD in Building Science

So the United States has announced it's withdrawing from the Paris Accord, the international agreement with nonbinding measures to mitigate the effects of climate change. Now everyone's up in arms, speaking in exasperated tones about the travesty of this decision.

"But... but... the science," they say. Yeah, let's talk about science.

Solar and Hot Water at the Airport House

Posted on June 13, 2017 by Reid Baldwin in Guest Blogs

Editor’s note: This is one of a series of guest blogs by Reid Baldwin about the construction of his house in Linden, Michigan. For a list of previous blog posts on GBAGreenBuildingAdvisor.com by Reid Baldwin, see the “Related Articles” sidebar below. You can read his entire blog here.

Dealing With Ductwork in an Unconditioned Attic

Posted on June 12, 2017 by Scott Gibson in Q&A Spotlight

Ted has more than a few cobwebs in his attic. The unconditioned space also houses his HVAC(Heating, ventilation, and air conditioning). Collectively, the mechanical systems that heat, ventilate, and cool a building. system.

The 1,800-square-foot brick ranch in Climate Zone 4 dates from the 1960s, but the previous owner installed both a furnace and ductwork in the attic just four years ago. Ted also has inherited a powered attic ventilator. Although both the attic floor and the ductwork are insulated, Ted recognizes the situation isn't ideal.

Fixing Energy Star Version 3

Posted on June 9, 2017 by Martin Holladay in Musings of an Energy Nerd

The Energy Star HomesA U.S. Environmental Protection Agency (EPA) program to promote the construction of new homes that are at least 15% more energy-efficient than homes that minimally comply with the 2004 International Residential Code. Energy Star Home requirements vary by climate. program has been in trouble since 2012, when the Environmental Protection Agency rolled out a new version (Version 3) of the program’s requirements. Many builders found the Version 3 requirements so onerous that they dropped out of the Energy StarLabeling system sponsored by the Environmental Protection Agency and the US Department of Energy for labeling the most energy-efficient products on the market; applies to a wide range of products, from computers and office equipment to refrigerators and air conditioners. program. The number of new homes that have been certified under the Energy Star program has fallen 36% in recent years — from 130,305 in 2011 to 83,897 in 2015.

Selling a House With Solar Panels Is Not for the Faint of Heart

Posted on June 8, 2017 by Stuart Kaplow in Guest Blogs

There are more than a million houses in the U.S. with solar panels installed on the roof and that number is increasing. Failing to address this issue properly when the house is sold can be legally difficult if not dangerous.

Some of the most common inquiries to this law firm arise from a failure to transfer ownership of installed solar panels correctly from one homeowner to the next.

Is Compressed Fiberglass Insulation Really a Problem?

Posted on June 7, 2017 by Allison A. Bailes III, PhD in Building Science

I've been guilty of perpetuating a myth. Not long ago I wrote an article in which I said installing insulation, "cavities [should be] filled completely with as little compression as possible." But is compression really such a bad thing? Here on GBAGreenBuildingAdvisor.com, commenter Dana Dorsett wrote, "Compression of batts is fine (resulting in a higher R/inch due to the higher density) as long as the cavity is completely filled.”

Silent Saver Under Attack

Posted on June 6, 2017 by Anonymous in Guest Blogs

By LOWELL UNGAR

This post originally appeared on the ACEEE Blog.

Are you happy to have cheap, efficient light bulbs that don’t flicker and hum? How about a large refrigerator that uses less electricity than the old incandescent bulb? A small government office has played a key role in all of these innovations and now helps the average American family save almost $500 each year in lower energy bills.

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