Ground- and water-source heat pumps move refrigerant or water through the ground or a body of water for use as a heat source (for indoor heating) or heat sink (for indoor cooling).

BuildingGreen-Approved Heat Pumps

BuildingGreen approves:

We should probably agree on the correct spelling for what we at BuildingGreen are calling "BITuser." I noticed that on the Salesforce portfolio screenshot provided by Dennis, it's spelled "BIT User."

BITuser has the advantage of more closely resembling LEEDuser, but it has the disadvantage of looking a little weird in all-caps, as in... Read more

Welcome to the quiz portion of The Great Eight: High-Impact Material Choices for Green Building.

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


1. Specify green building materials in product categories that truly make a difference for human health, the environment, or both.
2. Conduct a... Read more

Hello all,

I need future weather files for a project. We are looking at three years, 2050, 2075, and 2095 using two climate change scenarios, low emissions, and high emissions. I have seen ARUP's Weathershift site that uses RCP 8.5 and RCP 4.5. Are we assuming that 2.6 is not achievable? I would have used this as a low emissions scenario... Read more

Ada Fran Maman

Our Peer Networks offer a safe haven to you and other leaders where you can support one another and work together toward sustainable solutions that are intent on moving projects and the industry forward in the best possible ways.... Read more

Hello Sustainable Construction Leaders,

It's come to our attention that although we shared the slides from last fall's all-network Show & Tell in Atlanta, we neglected to include the presentations from the SCL Summit itself. Since we believe in "better late than never," here they are!

As a reminder: we have permission from... Read more

I'm working with a project team that is looking into bird control options to prevent nesting/roosting/pooping on the scrim that is designed to scrim their building's facade.  They are looking at electrified tape, repellents, laser systems, etc -- Options that don't dramatically impact the building design.  The products they're looking at claim... Read more

Folks, it is with a heavy heart that I write this: Lance Hosey passed away unexpectedly on Friday. 

Many of you know him from the early days of the SDL group, or as an outsized presence at any of the many conferences where we overlap. He's been a list-maker, poll-taker and all around troublemaker in my life for over 20 years; I know I am... Read more

Hi all,

We are looking to study Passive House on a couple small multifamily projects. Our understanding is that WUFI Passive only integrates with SketchUp at this time. Our BIM manager has been trying to find an example of a firm that works in Revit and uses WUFI Passive, to point him in the right direction on workflow. I offered to ask... Read more

Hello! 

We have several projects that are either pending ILFI Zero Carbon certification or the owner is planning to purchase offsets to cover construction emissions. Thus far, I have not considered this in our corporate footprint reporting. However, we are including A5 emissions whenever feasible and multiplying that performance over the... Read more

Hello all, 

Wondering if anyone has experience with lead limits in electrical cable and wiring? 

LEED for Healthcare allows a limit of 300 ppm of lead in electrical wire and cabling - my search for compliant products has been all dead ends. (MRc PBT Source Reduction - lead, cadmium, and copper)

Acceptable regulations for... Read more

Hello lovely Green Gurus. Hope you all are well. I am wondering if anyone has installed an indoor sports floor that performed well and is low-emitting. This is for a multi-purpose gymnasium at a community center. Any chance?  Thanks All!

Resilience Resource Database

The Defining and Measuring Resilient Outcomes Working Group has been developing a Resilience Resource Database as a repository for resources related to the topic of resilience in our built environment. 

This database and map are endeavoring to show resources for resilient design across the country to... Read more

Hi friends,

We recently tracked our water consumption on site during the structural demolition of some existing reinforced concrete buildings.  The new OSHA silica regulations required us to keep dust to virtually zero, so we had a bunch of mist cannons and water hoses pumping water around the clock.  We consumed ~855,000 gallons in a... Read more

Hi All, I was initially reluctant to share this, but I've seen similar posts and I think it's in line with our mission and interests so I'll go ahead with it.

Tomorrow 12/9 at 1 PM EST I'm moderating a panel of industry leaders in public health (as it pertains to buildings), construction finance, and project development to review the... Read more