Todd Collins replied to Dav Camras's discussion Designing airflow in large low load homes
"Look up Coanda effect and the concepts of distributing air along surfaces. "
Mar 19
Todd Collins replied to Rob's discussion ROCIS Ducted Range Hoods: Recommendations for New and Existing Homes
"I filled out this survey and want to re-iterate that it would be a better document if it included more meaningful information related to super air-tight structures that include Passive House (Passiv Haus) and zero-energy airtightness. This is where…"
Mar 19
Todd Collins commented on Greg O'Beirne's blog post Not everyone cares about building science.
"I have found that converting the Science into tangible things that relate specifically to comfort, health, livability and energy use are how to bridge the gap.
I use anecdotal information from other projects to make that happen as well as analogies…"
Feb 27
Todd Collins commented on Jim Gunshinan's blog post Unexpected Blessing
"Your humility is an example to us all... and also likely supports the degree to which you deserve the recognition as much as anyone.  Congrats.  And perhaps you are already retired ... or I assume too much.... I assume you are doing what you enjoy.…"
Jun 11, 2015
Todd Collins replied to Tom Strumolo's discussion Ancient (70's) wall foam insulation, now a powder.
"What did you find about the dust? "
Mar 27, 2015
Todd Collins replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"This is already mentioned in the comments, and it is not a bad thing to say it again.  In short, you have to measure energy use / sf.  And you have to take into consideration the typical appliances in homes then and now.  Having said that, we need t…"
Mar 13, 2015
Todd Collins replied to Patrick Michaelyan's discussion Vinyl Siding with Integral Insulation
"Keeping air from getting into the wall assembly is important - so answer to your question air barrier will help.  Keep in mind that WRB's are not necessarily air barriers.  Having some perms for drying is also important. As you know, water generally…"
Feb 27, 2015
Todd Collins replied to Patrick Michaelyan's discussion Vinyl Siding with Integral Insulation
"might want to consider vapor permeability.   Need to move the dew point out far enough to prevent condensation within the wall assembly.  "
Feb 26, 2015
Todd Collins replied to Nate Adams's discussion One Knob and the Pain That Inspired It
"Home performance is about comfort and energy savings.  We are working on a document about comfort to include information regarding indoor surface temperatures of exterior walls and windows.  In short, the way to make this a reality is to explain to…"
Jan 29, 2015
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard, 
I don't believe I am missing any points.  As I mentioned... I have no interest in bantering or arguing with you.  We are on the same page - we want healthier buildings, but you are not correct in saying properly ventilated buildings are no…"
Jul 29, 2014
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard,  
The study you cited states:   
"Patrick N. Breysse, a public health researcher at Johns Hopkins University, calls the study important because it shows that green housing clearly contributes to reductions in indoor air pollutants ...".  Th…"
Jul 27, 2014
Todd Collins replied to Mike Kandel's discussion Our Homes Suck – And That's Why Our Kids Have Sinus Problems
"Richard is not correct about this issue.  
Air sealing has not gone far enough.  What we need to learn is that we need to add mechanical ventilation to air tight buildings to bring in fresh air.  A good HRV/ERV will not only bring in fresh air, but…"
Jul 17, 2014