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perforated buckskin underclothing ventilation iaq quotes
Posted by Allison Bailes on July 31, 2014
I've been writing some articles on ventilation for the Journal of Light Construction lately and have come across some great material. The first quote here makes the point about indoor air quality with a graphic underwear metaphor. It's from an 1893 book whose author was a medical doctor interested...
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ventilation duct outdoor air return plenum
Posted by Allison Bailes on June 9, 2014
The small duct in the photo below is supposed to bring in outdoor air for ventilation in this new home.  It's a simple method that consists of a duct running from an outdoor wall cap to the return plenum of the HVAC system. A decade ago, it was commonly recommended as the easiest and least...
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power attic ventilator fan gable vent
Posted by Allison Bailes on May 29, 2014
Three years ago I wrote an article titled, Don’t Let Your Attic Suck - Power Attic Ventilators Are a Bad Idea. Nearly a hundred thousand page views and 93 comments later, it's still generating lots of heat. I don't know why so many people are so defensive about power attic ventilators, but here are...
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Bruce Wilcox and John Proctor at the Dry Climate Forum
Posted by Allison Bailes on May 20, 2014
At the Forum on Dry Climate Home Performance earlier this year, I got to hear three building science experts talk about a really cool research project they've been working on in Stockton, California. Bruce Wilcox, John Proctor, and Rick Chitwood (Wilcox and Proctor shown in photo at left) filled us...
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great ventilation debate ashrae 62.2 panel aci conference
Posted by Allison Bailes on May 6, 2014
Last week at the Affordable Comfort Conference (also known as ACI), I co-moderated a panel called The Great Ventilation Standard Debate.1 Duncan Prahl of Ibacos proposed the session and rounded up a collection of some of best building science folks in North America to be on the panel. And if you’ve...
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aci affordable comfort national conference detroit 2014
Posted by Allison Bailes on March 28, 2014
If you work in the fields of home building, home improvement, or HVAC and want to do the best work you can, you know that you've got to keep learning. Not only is there a tremendous amount to know, but things are always changing. Here are four great opportunities for you to continue your building...
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iain walker lawrence berkeley national lab lbnl
Posted by Allison Bailes on March 13, 2014
The debate over how much to ventilate a home has been going on a long time. Last year, Building Science Corporation introduced their own standard to compete against ASHRAE 62.2 because of problems they felt weren't adequately addressed in the ASHRAE standard. I've written about the standard and...
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ventilation eco touch controller fantech
Posted by Allison Bailes on January 22, 2014
One of the points of contention in the great ventilation debate is whether a home's occupants should control their own ventilation systems. The issue came up again in my article last week, Does a Gas Furnace Dry Out the Air in Your Home? I wrote that occupants should have control of their...
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Encapsulated crawl space in South Carolina
Posted by Allison Bailes on January 2, 2014
We're a few days into 2014 now. A lot of homes got built last year, and a lot got renovated, too. Quite a few homes got home energy ratings, and even more had blower door tests. Spray foam attics and encapsulated crawl spaces also grew in popularity. Since the economy is heating up a bit, the...
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Eric Werling sings the Mixed-up IAQ and Infiltration Blues
Posted by Allison Bailes on December 13, 2013
I've been on the road this week. I flew to Chicago on Tuesday and gave two presentations at the Better Buildings: Better Business conference put on by the Energy Center of Wisconsin. After I was done there on Wednesday, I flew to Massachusetts, where I attended the second day of Building Science...
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