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:

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

Hello lovely Green Gurus!

Just wanted to take a quick second to let you all know how much I've appreciated this amazing network over the last few years. I have taken a position at Amazon Worldwide Sustainability in their Sustainable Buildings group, and while I will be leveraging all of my skills and experience doing much the same thing... Read more

Hi all, 

I just wanted to post a quick message to introduce myself to the group. My name is Jeff Geisinger, and I'm an architect with Utile in Boston. We're a 50-ish person firm with a pretty broad project base, including affordable multifamily housing, institutional buildings, commercial interiors, and urban planning/public realm work... Read more

Welcome to the quiz portion of The Value of Variability.

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


1.  Understand why variability is important to the comfort and well-being of building occupants.

2.  Define “alliesthesia” and explain how it relates to the well-being of occupants... Read more

Has anyone heard about batu or cumaru as substitutes for ipe? I am looking for a durable deckling material, and would appreciate your recommendations for sustainable choices!

Good Afternoon!

has anyone heard of this?  the program focuses on healthcare construction but i think it would be good for all construction sites to have a certified individual.  And for those of us that report to CDP, this would be a good risk management strategy to include.

https://greenadvantage.org/pcra-certificate-program... Read more

To piggyback off Nathan's introduction where he mentions construction waste management, who is doing anything innovative or different in managing construction waste?  Construction waste has not historically been a passion of mine, but now working in sustainability and construction, I feel like it has to be by default.  

We have a... Read more

HGA is collaborating with the University of Minnesota Climate Adaptation Partnership (MCAP) to research how the AE industry is currently using climate projection data, and what they need in order to grow their use of data. MCAP is currently producing a set of dynamical downscaled climate projections for the state of Minnesota and unlike other... Read more

Hello All,

I'm supporting a project that is pursuing Green Globes and trying to get familiar with its content.  I'm hoping someone might have experience with the program and be able to provide direction toward products that have an OESR.  From what I've read, this is a material ingredient disclosure type report, based on ASTM std. E3182-... Read more

Hello- If you use Procore....

Are your jobs using a template to conduct and create "reports" of their IAQ inspections? Did you set it up in forms or inspections? Would you mind sharing an example template with me? I know Green Badger has a great app to do this, which we use. We would use inspections in Procore for jobs that are not using... Read more

Dear SDL: Thanks to all who have already given their support to the AIA Resolution on Urgent and Sustained Climate Action. We're into the final push of getting out the vote to pass the resolution next Wednesday, June 5th afternoon in Las Vegas. This requires 2/3s of the voting delegates to pass. So we're asking anyone who 1) is attending as a... Read more

Hi All, this is primarily directed at our Sustainable MEP folks, but please anyone with insight feel free to weigh in.

I am increasingly seeing designs and specifications asking for Passive House levels of airtightness as verified by blower door testing, but with traditional ventilation system designs. 

To me, Passive House US has... Read more

Hi All,

Has anyone dug into ASHRAE 2016 as part of the new v4.1 requirements or as codes start to adopt it? I recently presented on this and thought I should check my math to make sure I'm understanding and communicating this correctly.

My understanding is that there is a new reference baseline, that is essentially the ASHRAE 2004... Read more

Board insulation has good thermal performance ranging from about R-4 to R-8 and is used as an integral part of a building envelope’s continuous insulation system.

Because board insulation is used on the building exterior, it is not always subject to the same material health and emissions requirements as batt insulation used inside the... Read more