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

Welcome to the quiz portion of Net-Zero Energy Isn’t the Real Goal: 8 Reasons Why!

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


Describe why focusing on carbon instead of on energy at the building scale is a better choice for the environment. Name eight reasons why net-zero-energy buildings... Read more

Dear Green Gurus: I'm so sorry to have missed seeing many of you at AIA last week. I heard the BG and COTE events were the highlights of the week! Congrats.

I'm sure by now you've heard of the dreadful Supreme Court decision about the EPA. I thought I'd share a helpful, if not sobering, perspective in an Op-Ed today in the Washington... Read more

Hi folks,

I'm looking into lower-carbon pipe options for HVAC and plumbing. The MEP 2040 has slides from a Buro Happold study in 2020 showing PEX to be much lower in embodied carbon than copper, which is unsurprising. CPVC is also a lower-carbon option.

But PVC has its issues and neither PVC nor PEX are recyclable (especially if... Read more

A brief non-technical rant about OneClick LCA - from someone who is not actually USING the tool, but lobbying for its access.  Wondering if you all have better intel, or if it is just me.

We are working on a number of projects for which te teams are using OneClick LCA - for some cases it has a better international data set than others. ... Read more

I really appreciated our day on Tuesday--seems that we had a great inaugural Summit, and covered a lot of important ground. 

Here are the raw notes (flip-chart pages) from the day. Some of us came away with Action Items--see the list on the last page. 

Five-minute presentation decks and a more polished report to follow shortly. We... Read more

Meet the winners:

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2021

If you use the mindfulMATERIALS library to easily access material transparency documentation (if not, check it out!), please take 5-10 mins of your time to fill out this quick survey and help guide the future of the library.

The mindfulMATRIALS Collaborative is an industry-led initiative, visit www.mindfulmaterials.com to learn more. ... Read more

Hi all - I’m wondering if any of you have heard of or use the National Green Building Standard, which appears to be primarily for residential and mixed use: https://www.homeinnovation.com/green.

The NGBS Green certification program is based on the ICC-700 National Green Building Standard and supposedly is the program of choice for many... Read more

Thanks to SERA especially David, Kira and Clark for an inspirational conversation with Paul Hawken about his latest book. I know I needed a positive perspective! Then I found this great "Regeneration Anthem" song and had to share.

https://regeneration.org/news/210915-we-can-change-world-regeneration-an...

Happy Fall to all.

... Read more

Hi everyone,

Have your projects explored, pursued, or successfully achieved the domestic content bonus for PV systems within the Inflation Reduction Act (IRA) Investment Tax Credit? I have a project that is considering adding the IRA domestic content requirements and we are trying to understand the nuances and potential challenges (cost... Read more

I have to admit that I wasn't particularly paying attention to LEED during Greenbuild, but anyone recall the "big announcement by USGBC" that LEED v4.1 is coming?

Article can be found @ Green Building Law Update by Stuart Kaplow and the title is "LEED v4.1 Announced by USGBC at Greenbuild."

https://www.greenbuildinglawupdate.com/... Read more

Welcome to the quiz portion of Improving Resilience!

IMPORTANT: This quiz covers five related articles within this topic. 

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


Discuss resilient design options that prioritize safety, health, and emergency preparedness in the wake of disasters... Read more

Does anyone have language from an RFP that had specific performance criteria included that they could share? Such as a specific EUI target, detailed language about net zero, passive house, etc.

Welcome to the quiz portion of Video: Insights to Success on LEED-CI Certification.

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


 

1. Identify key changes to LEED CI 2009 (ID+C).
2. Identify the circumstances of a LEED-CI project that challenge the abilityto certify.
3.... Read more

Good morning, All,

Just a bit of news this morning.  My family and I are moving back out west!  I am continuing in my current role with EwingCole, but will be doing so from Portland, Oregon.  Although North Carolina has a been a wonderful place for us for the past 13 years, it is time to be close to family in the northwest and southwest... Read more

Hello all!

I'm new to the group, and so excited to be here. Two part question here (as we think about processes and new year goals).

I am at a smallish firm (20 people) in Boston helping to reform our processes to enable even those that are not steeped in sustainability at a daily level to be comfortable looking for opporutunities... Read more

Hello,

We’re looking for Design Energy Code Equivalents for Chinese commercial energy codes. Do any of you have  any good sources? I’ve only found data comparing ASHRAE 90.1 2013 to the Chinese Code at that time. We understand the Chinese code require a 65-75% energy savings over the baseline but don’t have good information for defining... Read more