Matthew Dahlhausen
  • State College, PA
  • United States
Share on Facebook Share

Matthew Dahlhausen's Groups

 

Matthew Dahlhausen's Page

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
Thumbnail

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 Forum
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/

Comment Wall (1 comment)

You need to be a member of Home Energy Pros Forum to add comments!

Join Home Energy Pros Forum

At 1:10pm 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!


Thanks!
Diane, HEP Moderator

 
 
 

Latest Activity

Dannie Jackson liked Allison A. Bailes III's group HVAC
20 hours ago
Dannie Jackson added a discussion to the group Energy Efficient Design
20 hours ago
Dannie Jackson liked Barry NewDelman's discussion Help your Clients save, THEN do what you do best
21 hours ago
Dannie Jackson replied to Barry NewDelman's discussion Whats the Consensus of this group Define "Energy Efficiency" in the group Energy Efficient Design
"Design wise I would say that energy efficiency is defined by the Btu / square foot.  This is…"
21 hours ago
Dannie Jackson joined Chris Laumer-Giddens's group
Thumbnail

Energy Efficient Design

Energy efficiency starts at the drafting table...How architects and designers can help buildings…See More
21 hours ago
Dannie Jackson liked Chris Laumer-Giddens's group Energy Efficient Design
21 hours ago
Dannie Jackson posted a blog post
22 hours ago
Dannie Jackson liked Home Performance Coalition's blog post Building a Market for High-Performing Homes
23 hours ago

Photos

  • Add Photos
  • View All

© 2017   Created by Home Performance Coalition (HPC)   Powered by

Badges  |  Report an Issue  |  Terms of Service