Matthew Dahlhausen
  • State College, PA
  • United States
Share on Facebook 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 Leslie McDowell, BPI'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
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 to add comments!

Join Home Energy Pros

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!


Thanks!
Diane, HEP Moderator

 
 
 

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Brian Clavette added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

FLIR i-7 thermal imaging camera

Hi,I have a very lightly used FLIR 1-7 for sale.   i-7, serial # 60101-4267.  Full hard case and…See More
9 hours ago
Don Fitchett commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"True, for the smart consumer, the power savings should offset the additional power usage. For the…"
11 hours ago
Michael Dunseith posted an event

BPI Exams - All at Green Jobs Training Center

March 2, 2015 at 10am to March 31, 2015 at 2pm
Green Jobs Training Center is currently providing written and field exams for all of BPI…See More
11 hours ago
Michael Dunseith posted photos
12 hours ago
Dennis Heidner commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"Nice article. I am an electrical engineer, creating sensors for data collection and "possibly…"
12 hours ago
Chris Hunt commented on Home Energy Magazine's blog post At Home with the Internet of Annoying Things
"Hi Alan, You correctly identified a lot of the potential issues coming with the IOT or the…"
13 hours ago
Nicole Miller joined James Sayers's group
Thumbnail

Marketing Energy Efficiency

Sharing ideas, tools and examples of promoting energy efficiency to consumersSee More
15 hours ago
Avi Yashchin posted a video

CleanEdison: BPI Training

Avi Yashchin's former company, CleanEdison, provided education and training for those seeking clean jobs, These services included Exam Prep for Leadership in...
15 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service