We have an MEP engineer that is calculating peak loads at about 6 times passive house levels on a large commercial building that is at or near passive house levels of insulation and air infiltration. We suspect one reason is that he is figuring a 50% efficiency level for the ERV. We are showing him ERV systems with 80-90% efficiency, but they... Read more

Welcome to the quiz portion of Behind the Logos: Understanding Green Product Certifications.

Learning Objectives

Upon completing this course, participants will be able to:


Hi, folks! 

I was recently asked if BuildingGreen could connect prospective speakers to an event organizer in Chicago. Beyond the leaders in the BuildingGreen networks relayed, I wanted to share that the exercise led me to the Women and Climate speaker database: https://www.womenandclimate.co/speaker-database 

When filtering by... 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

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

Hi all,

We have a newly constructed, core/shell project having some hot water issues in the core restrooms.

There is a 0.35 Toto lav installed throughout. The hot water heaters are adjacent on each floor, located in the janitor closets. We did the math, and there could be a gallon of water standing and cooling in the pipe between... Read more

Hello Gurus,

I have a client (bldg owner) who has asked me to recommend a list of firms who have the internalized resilient design in their practice.

They are *not* asking for resiliency consultants right now, but for firms that they might hire for "regular" capital projects, but since resiliency is high on their priorities, they... Read more

Hello Green Gurus,

Now is a pivotal moment. Net Zero Stretch Code legislation has been proposed in the Massachusetts House and Senate, and draft code language is currently being developed by the Board of Building Regulations and Standards (BBRS). The Net Zero Stretch Code is currently the greatest single opportunity to support reduced... 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

Old windows can be leaky and uncomfortable, but window replacements are expensive and resource-intensive.

BuildingGreen-Approved Interior Window Panels

BuildingGreen approves interior window panels with robust warranties that are designed to achieve improved thermal performance with both reduced... Read more

Hi Everyone - I'm posting this on behalf of Jeff Frost whom many of you know from his days as an SD Leader with SmithGroup and SERA and in his new role as head of Brightworks Sustainability's materials group.  I am excited to be working with Jeff on this concept of multi-attribute product scoring.  Cheers, Lona

Dear SDL’ers,

We’ve... Read more

Congrats Nadav!!!! https://www.aia.org/showcases/181011-nadav-malin-hon-aia?utm_source=Buil...

We apologize, but the heating fuel cost calculator is no longer on the BuildingGreen website.

Take a look at Efficiency Maine's heating fuel cost calculator instead.

Hi Everyone!  About ten days ago, Megan Zack posted a note announcing her new role as Chief Sustainability Officer at Wight & Company. (Yay!)  I'm so delighted that she will be stepping into this leadership role at Wight to shepard the firm in the next chapter of their journey in sustainability. 

I wanted to take a moment to say... Read more

Welcome to the quiz portion of LEDs: The Future is Here.

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


1. Restate the energy efficiency and long service life of LEDs.
2. Describe basic LED components and how, when assembled, they perform differently than traditional light... Read more

Dear All!

Crowdsourcing here to see if anyone has access to two LCA's that can be used to compare functionally equivalent consumer products: a fossil fuel powered to a battery one?  (A good product might be a car or stove, or a heating system with a boiler compared to a heat pump, perhaps?  Needs to include the B-use phase probably...)... Read more