Tom Barrett
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  • Chico, CA
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Shell Sealing Limits to Existing Homes

Started this discussion. Last reply by tedkidd Aug 11. 5 Replies

What is the appropriate level to shell seal existing homes, in a cost-effective manner. Is it appropriate to target the sealing goal to current IECC or Energy Star standards for new homes or as DOE…Continue

Tags: target, sealing, shell

How Much Energy Do Building Energy Codes Really Save? Evidence from California

Started this discussion. Last reply by Sean Lintow Sr Apr 8, 2015. 39 Replies

On the Freaknomics Radio podcast last week (freaknomics.org) they interview Arik Levinson about his recent article "How Much Energy Do Building Energy Codes Really Save? Evidence from…Continue

Tags: savings, energy, codes, Energy

 

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Shell Sealing Limits to Existing Homes

What is the appropriate level to shell seal existing homes, in a cost-effective manner. Is it appropriate to target the sealing goal to current IECC or Energy Star standards for new homes or as DOE says in one publication to shoot for a 20 - 30% tightening (CFM50) level? Time and money are limitations, I could spend a week completely trying to seal an existing leaky bucket but the cost would be atrocious. So what is a good, reasonable, and cost-effective target?See More
Sep 12
tedkidd replied to Tom Barrett's discussion Shell Sealing Limits to Existing Homes
"Love Walter! But as of 8/11/16 you might want to stop recommending HRV/erv in Cleveland. We are tracking our jobs after, and they are exacerbating humidity management problems. erv cores don't dry incoming enough, air is still too wet. We…"
Aug 11
David Eakin replied to Tom Barrett's discussion Shell Sealing Limits to Existing Homes
""It depends" is definitely the rule! I live in the MidAtlantic region so I deal with low Winter temps, high Summer temps, and relatively high humidity. I have implemented many projects to reduce air infiltration and improve shell…"
Aug 11
tedkidd replied to Tom Barrett's discussion Shell Sealing Limits to Existing Homes
"Make it as tight as you can with the budget you have. Always, always, always recommend 4" filtration and mechanical ventilation, and in humid climates always recommend ventilating dehumidifiers. If problems arise later, you will want that…"
Aug 11
Wilfred Skillicorn Jr. replied to Tom Barrett's discussion Shell Sealing Limits to Existing Homes
"Yes, It all depends on the Client's Goals and to some degree budget. Blower door assisted air sealing is the Gold standard along with seasoned professionals willing to take the time and get into the difficult places to make a difference to the…"
Aug 11
Tom Barrett commented on Home Energy Magazine's blog post Industry and Efficiency Proponents Agree on Big Efficiency Gains for Pool Pumps
"The new state-of-the-art variable speed pumps and filtration system can make a huge difference. We replaced on for a utility-sponsored project and the amount of energy the retrofitted system used in 8 hours of filtration was less than one hour of…"
Aug 8
Sean Lintow Sr replied to Tom Barrett's discussion Shell Sealing Limits to Existing Homes
"The true answer is - it depends. Certain style homes in certain areas one might say hey we can get X% or down to X ACH pretty reliably, but this model we might only get to Y. As for going, well if we seal XYZ, we will get so much reduction…"
Aug 8
Tom Barrett posted a discussion

Shell Sealing Limits to Existing Homes

What is the appropriate level to shell seal existing homes, in a cost-effective manner. Is it appropriate to target the sealing goal to current IECC or Energy Star standards for new homes or as DOE says in one publication to shoot for a 20 - 30% tightening (CFM50) level? Time and money are limitations, I could spend a week completely trying to seal an existing leaky bucket but the cost would be atrocious. So what is a good, reasonable, and cost-effective target?See More
Aug 5
Tom Barrett replied to Tim Kendzia's discussion Cooling effect from solar panels
"Any type of shading will help greatly. One of the biggest, if not the biggest, factor for high summertime attic temperature is the type of roofing material used. The most commonly installed roofing is asphalt shingles, which when exposed to the…"
May 5
Sean Lintow Sr replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"LOL, can't we all just get along :) I think you nailed it - both are pushing the boundaries but good look back in this piece at some of the other drivers / factors"
Apr 8, 2015
Tom Conlon replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"If anyone is still following this thread, they may want to check out David Goldstein's strident rebuttal to Arik Levinson: How Much Energy Do Building Energy Codes Really Save?: How to Misuse Statistics I agree with him that Levinson's…"
Apr 6, 2015
Tom Conlon replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"Ha! This video was fun, but it probably needs a disclosure label: "No energy modelers were harmed in the making of the Perfect Energy Code (or this video)". "
Apr 6, 2015
John Proctor replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"You may have already see this, but if not it is worthwhile. Forwarded from Rick Chitwood.   https://www.youtube.com/watch?v=Okn3XgwSX5Q "
Apr 6, 2015
Barry L NewDelman replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"As an architect and energy consultant working in 14 states mainly those states which are deregulated. We have found that strict enforcement energy called and do not necessarily result in significant savings however when a homeowner takes a proactive…"
Apr 2, 2015
Dennis Heidner replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"Tom,  in the study  http://peec.stanford.edu/docs/modeling/research/Deconstructing%20the%20Rosenfeld%20Curve.pdf The authors try to explain the differences between US and California per capita consumption, due to population, building…"
Mar 21, 2015
Tom Conlon replied to Tom Barrett's discussion How Much Energy Do Building Energy Codes Really Save? Evidence from California
"Crazy yes, but as Nehemiah and I noted above, Levinson's papers ignore natural gas. However, I found a series of working papers by one of Jim Sweeney's grad students (now at U Chicago) that are more comprehensive, and seem to be where…"
Mar 20, 2015

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Company
TA Barrett
Role in Home Performance Marketplace
Architect / designer, Building energy modeler, Educator / Trainer, Energy auditor / assessor / analyst, Energy efficiency / Weatherization program administrator or implementer / evaluator
Professional Certification
BPI
Professional Interests
Energy conservation and efficiency, renewables, sustainable design and planning

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At 2:47pm on February 15, 2011, Diane Chojnowski said…

Hi Tom,

Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!


Thanks!
Diane, HEP Moderator

 
 
 

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