Split systems are multi-component units that use an outdoor condenser along with separate indoor fan coils to move refrigerant—and provide heating and cooling—in buildings without the need for ducts.

BuildingGreen-Approved Systems

BuildingGreen approves mini-splits that are tested to AHRI standards and have minimum SEER and an... Read more

Hello Green Gurus,

Our next Peer Networks webinar is coming up in just two weeks! We’ll hear from the Indoor Air Quality Working Group, authors of the recently published whitepaper “Considerations for Continuous Air Quality Monitoring: Simple tips for getting it right, according to IAQ consultants”.

More details will be available... Read more

Pat U. Mellona

Hi Gang, 

We are looking to implement the contractor commitment and are running into COVID-19 protocol barriers when looking at the Jobsite Wellness category specific to the soap as well as the food storage/eating areas on site. Anyone else run into this issue? 

-Kena 

Hi all,

We are trying to encourage participation in take-back programs and using recyclable packaging with our vendors and I was wondering how we can add it to specifications. Does anyone have any examples on how we can add wording in specs about participation in take-back programs, using recyclable packaging and/or reducing non-... Read more

Fellow Sages,

I was at an interesting lecture last night. Phil Bernstein (formerly of Autodesk, now at Yale) was speaking (in Lawrence, Kansas, at the U of Kansas) about AI and design/AEC ... you may know that he authored the 2022 book, Machine Learning, about AI and the AEC field. 

Phil has a very interesting posture about AI... Read more

We are excited to open registration for the Sustainable Construction Leaders Summit 2019! This year’s Summit will take place Tuesday, Nov. 19 in Atlanta in conjunction with Greenbuild. The Summit agenda will be shaped by the steering committee and collective feedback from the group. The day will culminate in a networking event with members of... Read more

Welcome to the quiz portion of BuildingGreen’s Top 10 Green Building Products for 2018.

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


1.  Explain the transparency and optimization criteria in the LEED v4 (applicable to  Building Product Disclosure and Optimization credits in LEED v4 BD+C and... Read more

Were we given any warning that LEED Online and USGBC.org would be down for a week?  

It’s here! By popular demand we’re re-running the SDL Salary Survey that we last ran in 2015. 

This is for people who are currently in an SD Leader role at a firm. We’re sending this invitation out on both the Green Gurus and the SD Leaders forums, because some of you are still in transition and haven’t moved into the SD Leader forum yet... Read more

Hi all -

I got this yesterday from Renew Oregon, a credible environmental NGO here in the state.

"A secretive special interest group has filed a petition at the Federal Energy Regulatory Commission (FERC) to take “net metering” rules away from states and make it a federal issue.  Net metering is the program that allows homes and... Read more

Has anyone seen a comparison between IECC 2021 and previous versions of the energy code, including ASHRAE 2010? I'm curious how far ahead code buildings are relative to LEED v4.0, and how much the latest IECC raises the bar relative to the previous. I did a quick search for the LBNL and other studies that look at this, but didn't see anything... Read more

Has anyone here performed circadian lighting studies for WELL using rhino/grasshopper (Lark Spectral Lighting)? 

It seems that Lark can only simulate circadian metrics for daylighting, and NOT electric lighting.  Can anyone shed some light on this?  pun intended :)

Are there any other tools out there that would enable us to... Read more

Greetings SDLs - I am looking for recommendations for VLT meters that folks have had sucess with (reliability, accuracy, etc.). Are there any that art partiularly useful when in the field for existing buildings? 

Many thanks,

JD