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:

Join us for the Peer Networks-exclusive version of this Greenbuild presentation!

Register HERE.

A New Standard in Facade Design
November 30th, 2020
1pm - 2pm ET (10am - 11am PT)

Description and Presenters: Current façade design focuses more on operating carbon (or energy), even when embodied carbon is accounted... Read more

We're thrilled to announce that, for the first time, the 2025 Summits for each Peer Network will be hosted within one week and in a single location. You’ll get the deep peer-to-peer time you love from a Summit AND some glorious cross-disciplinary time to experience the power of the Green Commons. It’s all happening at the Kimpton Cottonwood, a... Read more

I'm writing an article surveying and comparing various embodied carbon tools, including whole-building LCA tools. I'm looking for interviewees who have used at least TWO of the three major LCA tools currently in use in North America (Tally, Athena IE, and One Click LCA). If you've tried all three, all the better! If you or someone in your firm... Read more

Welcome to the quiz portion of Equity in Design and Construction: Seven Case Studies!

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


Are you getting questions, advice, and dubious sales pitches from all comers about how to design and run an HVAC system to combat infectious disease? You’re not alone. Engineers, facility managers, architects, and other building professionals are all... Read more

Checking in to see if any of you have had good job site success with plastic water bottle recycling. Due to the LBC recycling requirements, we have to source separate onsite, and we're trying to has a separate plastics bin. For the most part, water bottles is going to be on of our biggest contributors.

Does anyone know where one can locate weather files (EPW) that has predicted future data for climate change?

Thanks in advance.

The results from the "CogFx" study are compelling, showing that people in environments with low VOCs and low ambient CO2 levels score higher on tests of cognitive function.  Specifically, they show that providing 40cfm of outdoor air per (actual live) occupant results in significantly higher scores than even the "Enhanced Ventilation" scheme... Read more

Hello Green Gurus,

Here is the information for our second Peer Networks Webinar this month, coming up next week: Better Products = Better Buildings (Low Carbon Specs). We hope you can join us!

Register HERE.

Better Products = Better Buildings (Low Carbon Specs)
Thursday, May 19, 2022
1 - 2pm ET (10 - 11am PT)... Read more

They do, seriously.  They are fine people with tons of information, and without them, all of us Architects would be, well, out of luck.

So, we first want to say THANK YOU to all of our contractor friends who took part in our Contractor Coffee Talk on Tuesday. THAT WAS AWESOME!

We learned things like:

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

As we begin to look into Scope 3 emissions reduction strategies, it's important to understand ways to reduce tranportation emissions to project sites. Is anyone aware of best practices or programs for contractor carpooling to jobsites? I know many of my colleagues travel to work together in one vehicle because of parking limitations, however,... Read more

I wanted to let you all know about this Built Environment Plus Roundtable coming up on Thursday afternoon 3:00 est. We will be having a discussion around the IRA and how to implement the incentives on projects and help our clients understnad what it means for them. This is an informal setting where people can ask questions or share experiences... Read more

Looking for an example or case study for a building utilizing a radiant heating/cooling in climate zone 4a. General use type is office with some public assembly spaces, total of 85,000 sf.

As usual, everyone, especially mechanical engineer, is terrified by the thought of "condensation." So far, I read a DGWW case study, "Energy... Read more

Welcome to the quiz portion of A Guide to Selecting Sustainable Textiles.

Learning Objectives

Upon completing this course, participants will be able to:


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