David Holtzclaw's Groups (13)

  • 1000 Home Challenge

    138 members Latest Activity: Mar 14

    Linda Wigington distinguished between deep retrofits & deep energy reductions, thus expanding the range of strategies & tactics from…

  • Energy Auditing Equipment for Sale, Trade or to Purchase

    349 members Latest Activity: yesterday

    Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment you have to sell, trade or wish to…

  • Hall of Shame

    160 members Latest Activity: Jul 9, 2018 In this group, members share an array of images from the field, showing the kinds of issues encountered by home performance professionals in real…

  • Home Energy Ratings

    108 members Latest Activity: Oct 23, 2018 Calculating them; visualizing them; explaining them; selling them .... there is a lot to discuss and debate here

  • Renewable Energy

    72 members Latest Activity: Aug 31, 2018 This group will focus on the issues associated with incorporating renewable energy sources like Solar PV, Solar Thermal, Geothermal, Small Wind,…

  • Historic Home

    70 members Latest Activity: Jul 9, 2018

    Historic and vintage homes are significant to our cultural heritage, yet often lack energy efficiency and comfort. Our mission is to identify key…

  • Wrightsoft - Manual J / Manual D

    52 members Latest Activity: Sep 20, 2018 If you use Wrightsoft to calculate loads or design ducts, you likely have questions.  Get answers from veteran program users and peers here!

  • Building Simulations

    74 members Latest Activity: Nov 18, 2017 Work collaboratively to find easier, more accurate and better ways to model, predict and verify a home's energy consumption.

  • Building Performance Institute (BPI)

    335 members Latest Activity: Jul 23, 2018

    BPI is the nation's premier standards development, quality assurance and credentialing organization for residential energy efficiency retrofit…

  • Best Practices (Residential)

    346 members Latest Activity: Feb 20

    Best Building, Retrofitting, or even Auditing Practices - what are they, what should change, what needs to find it's way to the dust bin of…

  • Multifamily Buildings

    150 members Latest Activity: Dec 14, 2017

    For too long there has been relatively little EE focus on multifamily, but some new programs have recently started. This group gives us a venue to…

  • HVAC

    207 members Latest Activity: May 16, 2018 HVAC design, Manuals J, S, T, & D, Duct leakage, Air flow, ENERGY STAR new home requirements, and more. Since heating & cooling are such a big part…

  • INFRARED THERMOGRAPHY USERS

    198 members Latest Activity: Dec 10, 2018

    This group is dedicated to knowledge sharing and discussion of infrared thermography for building sciences and energy applications.

Latest Activity

David Butler replied to Don Fugler's discussion Depressurization/make-up air issues in the group Kitchen Ventilation
"Thanks for your thoughtful reply, Brennan. My point about the load impact on tight homes with…"
1 hour ago
Brennan Less replied to Don Fugler's discussion Depressurization/make-up air issues in the group Kitchen Ventilation
"David, I know the pressure reaches static levels quickly. I meant, how quickly then does radon…"
5 hours ago
David Butler replied to Don Fugler's discussion Depressurization/make-up air issues in the group Kitchen Ventilation
"@Brennan, there's virtually no lag. When an exhaust fan comes on, the pressure differential…"
6 hours ago
David Butler joined Don Fugler's group
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Kitchen Ventilation

In many homes, cooking is the largest indoor source of air pollutants. Exposures can be higher in…See More
7 hours ago
Tom Phillips replied to Don Fugler's discussion Depressurization/make-up air issues in the group Kitchen Ventilation
"Hi Don:  good questions, as usual. Would be great to routinely get depressurization data…"
10 hours ago
Glen Gallo replied to Rob Madden's discussion Determining Duct Leakage based solely on blower door and pressure pan testing
"delta q works cool graph does return a supply leakage sometimes it has a hard time reaching smooth…"
10 hours ago
Tom Phillips liked Don Fugler's discussion Depressurization/make-up air issues
11 hours ago
Brennan Less replied to Don Fugler's discussion Depressurization/make-up air issues in the group Kitchen Ventilation
"Hi Don, great sequence of questions, and a couple of thoughts. Overall, I just don't see…"
11 hours ago

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