I am excited to share with you the final draft of the letter back to LP50 manufacturers.  The LP50 manufacturers sent their “Closing the Loop on Product Transparency” to design firms earlier this year.  For more background information, please check out Chris Hellstern's original August 20th post on this Green Gurus forum.  When we posted the... Read more

Hi folks,

We often hear from you with a suggestion of someone who would be great for the network, and a question about how to refer them. We've now made that easy, with three steps laid out in an Outreach Toolkit that's posted in the left margin of the Member Directory.

So, if you're thinking of someone to invite or come across... Read more

I think they look great - thanks to BuildingGreen for setting this up!  A few comments/questions:

Little things make a big difference in MEP systems. Pumps, fans, ducts, and dampers are at the heart of performance.

BuildingGreen-Approved HVAC Accessories

We approve the best-in-class products in each category, including:

Hi All,

We are trying to make a case for hiring a full time sustainability specialist in our firm, and one of the arguments we want to use is that the ratio of sustainability specialists vs the ratio of full time employees in our company is quite low. That being said, I want to have an understanding of where other firms stand with this... Read more

Hi everyone, I'm sure that some of you already received the message below from Kira Gould (and/or others), but assuming that it didn't get to all of you, I'm forwarding it here. I believe that Lindsay is in common cause with all of us here on this forum, and will provide meaningful built-environment contributions to COP.
Thanks for... Read more

Air movement keeps occupants comfortable when it's warm, so cooling setpoints can be higher, and natural ventilation is a viable option even at higher temps and humidity.

BuildingGreen-Approved Ceiling Fans

BuildingGreen approves Energy Star-certified ceiling fans with ECMs—motors using electronic commutators.

Energy and... Read more

Have any of you come across aqueous ozone product for hand sanitation?  https://www.3oescientific.com/

This company is selling to hospitals/schools.  May indeed be awesome, but so many "totally safe" products are proven not to be. Curious if this group has seen it or have looked at it's claims.

Hi Green Gurus,

We have a lot going on this week, and I know it’s hard to keep track of everything, so I’m providing this quick update.

Conveniently, we have also just launched the new Peer Networks Hub on BuildingGreen.com, with a Calendar page where you can see all upcoming events (and a link to recordings of past events). You... Read more

Hello all,

Does anybody know of a substitute for Ecotect's solar tool? I use it to very quickly test shade options and I love how I can easily test horizontal and vertical elements, tilting and rotating them. I can have a window with the façade on one side and the sun path with the shadow mask on the other side. It is easy to use and... Read more

Hello Green Gurus,

Back at the retreat in March 2021 (does anyone remember back that far?), we formed an Air Quality Working Group with members from SDL, SMEPL, and SCL. Drawing on our collective experience, standards, research, and other resources, we began navigating the murkiness of indoor air quality considerations. We came up with a... Read more

Hi All,
We have a project in design with a large AV display for updating data. Anyone know of an AV team that thinks through both visual /acoustic performance in conjunction with energy use and environmental impact of the display? Replies on the peer networks hub or directly to me at alk@dskap.com work. 

Thank you! 

Are you or companies considering joining RE100? http://there100.org/going-100

"Companies joining RE100 make a global, public commitment to 100% renewable electricity.

To achieve this goal, they must match 100% of the electricity used across their global operations with electricity produced from renewable sources – biomass (... Read more

Short notice – apologies in advance.

Please review the new Guide following the instructions on the first page of the attached draft and using the attached spreadsheet. Comments will be accepted until February 16th at noon EST

Use the Excel spreadsheet to compile your comments if you have any, and return them to me by Feb 15th COB... Read more

Welcome to the quiz portion of When Passive House Goes Big!

Learning Objectives
Upon completing this course, participants will be able to:


Evaluate the main barriers to achieving the Passive House Standard on a large, urban project.

Identify design strategies for successfully and cost-effectively achieving the... Read more

I'm teaching a LEED GA study group and was rambling on the differences between CIR and precident-setting LEED Interpretation (that gets posted in the addenda library and all). Then I went onto LEED Online and was showing how those are submitted... but can't actually figure out how a LEED Interpretation would be submitted. Has anyone done this... Read more