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

Hi all,

For your planning purposes for next year, here’s info on in-person events coming up in 2024:

As you may remember, our Summer 2024 SDL Summit will be July 15-17, 2024 at IslandWood on Bainbridge Island! Tickets will be $1800, which includes the cost of meals and lodging.

We are excited to announce we will also be... Read more

Hi folks,

We've got another timely and engaging webinar lined up! Join Panama Bartholomy and Peter Rumsey for the latest on electrification policy and applications. (As always, if you can't make it at this time that's ok, we'll be recording it.) 

Register here to get the link: https://www.buildinggreen.com/peer-networks/webinars... Read more

Hi all: I'm looking for experience, insight, or advice as it relates to ISO 14001. I know it is more popular internationally than in the US, and I am trying to ascertain if the the value-add is greater than the cost and effort. If your company is certified, or even if you have looked into it in any capacity, I would love to pick your brain.... Read more

Hi all, 

Following the SCL Summit back in November, the Waste Subgroup agreed to complete a Model Waste Management Plan to serve as a contractor commitment to reduce construction waste. I distributed the attached (very rough) draft back in Jan., and received some good feedback via forum comments. 

We would like to set up a call to... Read more

After reviewing BP language today with internal staff, we realized we'll need to add a glossary to explain industry jargon and technical terms that might not be widely used. I'd like to consolidate those terms onto one web page, a glossary. This probably should be on the list with the best practices, and it will need its own page. Thanks!

Greetings to all of the sustainability leaders in the Green Commons!

Note: This is a message about politics, which we generally try to avoid in our safe space--but in this case it’s directly tied to climate action so I feel good about sharing it. Feel free to let me know or check in with the BuildingGreen folks if you have concerns or... Read more

Hi, and welcome to the Sustainable MEP Leaders Peer Network! 

This online forum is one of the ways we can stay connected and support each other as we collaborate to help MEP design achieve its highest potential as an element of sustainable and regenerative buildings. Please introduce yourself with a little about where you work, what you'... Read more

For those folks who are on our retrofit electrfication roadmap post-palooza-sub-sub-working group ;-) , I thought you might be interested in these three guides just released from BEI in collaboration with S. Winter Associates.

Here are the three Playbooks:

Hi SDLers: See the great opportunity to weigh in on the 5th National Climate Assessment at a series of workshops in early 2022. 

Register here:

https://www.globalchange.gov/content/nca5-engagement-workshops?utm_sourc...

Hope all are staying well.

Mary Ann

I’m a volunteer member of the ASHRAE 209 ("Energy Simulation Aided Design for Buildings Except Low-Rise Residential Buildings”) Committee.  Are you familiar with ASHRAE 209? It was first published in 2018, and it outlines a process for incorporating energy modeling into the design process. 

From the forward: 

 ASHRAE Standard 209... Read more

Welcome to the quiz portion of The Building Envelope: Primers from Environmental Building News.

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


1. Explain how thermal mass helps maintain indoor thermal comfort in buildings.
2. Describe the differences between closed-cell and... Read more

Hi folks,

We had a rich conversation in our monthly meeting last week. I've summarized the highlights below. Next call is July 11 at 2pm eastern. If it isn't already in your calendar, here's the Zoom link.

What’s on people’s minds?

Looking into high-temp water-source heat pumps for industrial applications. Transom and... Read more

I have a colleague researching existing, proposed, or anticipated changes to urban planning and building codes that encourage lower carbon footprints.

Can anyone comment on or point me to resources on how cities are using carbon footprint analysis and carbon reduction in permitting, now or in the future?

Some specific topics that... Read more

Welcome to the quiz portion of LEED vs. Green Globes: What's the Difference? (recorded webcast)

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


1. Explain how LEED and Green Globes in turn approach key credit requirements.
2. Describe differences between LEED and Green Globes... Read more

Hi everyone,

Remember the thread on here from last fall that “broke the internet?” We have some progress to share and a chance for members to re-engage. A core team has been meeting to compare project process diagrams and challenges. They will share examples from their firms, along with learnings and best practices, on Wednesday, March 6... Read more