Matthew Dahlhausen
  • State College, PA
  • United States
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Latest Activity

Matthew Dahlhausen replied to Mike Rogers's discussion Where do you fall in the "staged" versus "gotta be all at once" discussion?
"The unit will cycle more, which will cause an efficiency drop.  The economic comparison is then the cost of the extra fuel use from cycling, versus the value of delaying the capital expenditure.  Generally the value of delaying is worth…"
Apr 4, 2014
Matthew Dahlhausen replied to Mike Rogers's discussion Where do you fall in the "staged" versus "gotta be all at once" discussion?
"It depends on the capital available, investment lifetime considered, and the state of the mechanical equipment.  The "tunnel through the cost barrier" savings comes from changing to a different mechanical system, e.g. steam boiler to…"
Apr 3, 2014
Matthew Dahlhausen replied to Mike Kandel's discussion Can you solve this month's stumper? in the group Building Performance Institute (BPI)
"The solution to this problem is to prevent warm moist air from contacting a condensing surface.  This is difficult, because it is nearly impossible to create a perfect air barrier – especially one that maintains a seal over time in a…"
Feb 28, 2013
Matthew Dahlhausen 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 for residential energy efficiency retrofit work.See More
Feb 28, 2013
Diane Chojnowski left a comment for Matthew Dahlhausen
"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! Don't…"
Feb 27, 2013
Matthew Dahlhausen is now a member of Home Energy Pros
Feb 21, 2013

Profile Information

Company
Penn State University
Professional Certification
BPI
Professional Interests
Deep energy retrofits of residential and commercial buildings. Legitimate green buildings.
Website URL
http://www.buildsci.us/

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At 10:10am on February 27, 2013, Diane Chojnowski said…

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!

Don't forget to upload your profile photo. And add your location on our Member Map!


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Diane, HEP Moderator

 
 
 

Forum Discussions

When is it too windy to use blower door?

Started by Brandon Walton in General Forum. Last reply by Kent Browning yesterday. 10 Replies

Electro Magnetic Fields (EMF)

Started by Barry L NewDelman in General Forum. Last reply by Arnie Katz on Thursday. 2 Replies

Affordable Housing Funding

Started by SUZETT MOFFITT in General Forum. Last reply by Diane Chojnowski on Wednesday. 4 Replies

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Profile IconEmily Rhea, Spray-on Foam and Keith Flores joined Home Energy Pros
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Kent Browning replied to Brandon Walton's discussion When is it too windy to use blower door?
"I found this post thru a Google search. I was already a member and have posted a few times. I am a…"
yesterday
Home Energy Magazine's video was featured

2017 U.S. Department of Energy Race to Zero Student Design Competition

The U.S. Department of Energy (DOE) Race to Zero Student Design Competition (Race to Zero) inspires collegiate students to become the next generation of buil...
yesterday
Dave Ransom joined James Sayers's group
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Marketing Energy Efficiency

Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More
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