I've been hearing recommendations for bipolar ionization, as a way to filter airborne virus particles in HVAC systems while avoiding the energy penalty of increased ventilation. However, I've also heard that ionizing equipment is dangerous because it produces ozone.

Does anyone have any insight into the effectiveness and/or cautions... Read more

Hello SCL peeps, 

Thank you to all the people who filled out our 2021 event survey. Your feedback did help us narrow down the options, but it was still inconclusive about whether there’s enough interest in doing an SCL-only Summit. 

To stay on schedule with our planning (and to make sure the event will pencil out financially), we... Read more

Water treatment systems often rely on harsh chemicals to treat bacteria, and on high water use from drawdown of water to reduce build-up of concentrates—a process called blowdown.

BuildingGreen-Approved Water Treatment

BuildingGreen approves systems that:

Hi All:

Several of us have been meeting on a weekly basis to discuss LMN's Path to Zero Carbon Series. Each week we have a new facilitator who leads the discussion of a single post. We've had great discussions and are creating "Call to Action" items for each post to amplify the message..."It's not about the glory, it's about the ripples... Read more

Buck Dodgers

Hello everyone,

Wondering if anyone has evaluated/considered/specified wood fiber insulation for use in lieu of mineral wool as the exterior wall insulation?  Am mostly looking to better understand domestic availability, r-value and fire/combustibility.

We have a multi-family building in DC where the client is interested in using... Read more

Check out this new executive order. It is broad and includes a lot of items, but of interest to this group, there are some things in here that we pointed towards in our letter back from the beginning of the year, including 24/7 carbon-free electrical energy, a net-zero emissions portfolio by 2045 and net zero emissions from procurement... Read more

Re: 310 CMR 78.00: Ban of Covered Products Containing Certain Flame Retardants. This law took effect as of April 01, 2021, and is enforced by Mass DEP. 

Quick Summary: Law bans 11 types of chemical flame retardants from... Read more

Hi all,

I wanted to reach out to fellow MEP energy modeling teams to assess everyone's experience with the new PCI calculation methodology in 2016. It was a substantial change in how we show savings on projects. Big changes can often come with un-intended consequences. I'm all for pushing to higher efficiency - just want to make sure we... Read more

Dear Gurus,

At Greenbuild this year I'll be discussing how statistics can lie (in the context of green building claims).  I'm collecting examples of this to prepare.  If any of you know of examples, please send them to me! 

Here are a few of the fun ways statistics might lie that I would be looking for: biased or too-small sample... Read more

All,

Beck is making great strides in our AIA 2030 Commitment and we are looking for an experienced energy modeler to join our team, please reach out if you know of anyone that is looking and has energy modeling experience.  the job is posted on our website:  https://beckgroup.applicantpro.com/jobs/1011136.html

Hi all,

I see that this was a hot topic for the Winter Retreat this past year, but I am wondering how your firms manage standard materials across your practice. two aspects - standard specification items, and also designer choice materials. 

1. Do you have a spec baseline with high performance materials that you start with for all... Read more

I know we have talked about this on various calls, so I wanted to post in case anyone hasn't seen that the IRS has provided an update with rules on how to access the direct pay option.

https://www.usgbc.org/articles/irs-issues-ira-tax-credit-rules-tax-exemp...

As I mentioned in my five-minute presentation this morning and then discussed a little more in the break-out on RELi that followed, the full RELi Rating System, in its current form, has now been posted online: http://anyflip.com/zyqc/mdir/

Unfortunately, this is only posted as a flipbook, currently (viewable online only), and isn't... Read more

Hello Sustainable Advising Leaders,

Here are the notes from the last Zoom call. We had a great turnout! Looking ahead, now that things are rolling along we’d like to get into the rhythm of a regularly scheduled monthly call. Since Tuesdays seem to work well for most people, I am proposing the 4th Tuesday of the month from 3-4pm ET. That... Read more

Air movement keeps occupants comfortable when it's warm, so cooling setpoints can be higher, and natural ventilation is a viable option even at higher temps and humidity.

BuildingGreen-Approved Ceiling Fans

BuildingGreen approves Energy Star-certified ceiling fans with ECMs—motors using electronic commutators.

Energy and... Read more