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VRF systems and outside air modeling

NC-2009 EAc1: Optimize Energy Performance
posted by Robert Sutton on Mar 4, 2013, 10:11 pm

Has anyone done a VRF system serving various zones using say heat pump VRF units and then providing outside ventilation air from a separate dedicated unit serving the same various zones? Is...

Last reply: Robert Sutton, Mar 7, 2013, 10:02 am

LEED Homes Pilot Credit 29- Gimme Point

Pilot-Credits PC29: Housing and Jobs Proximity
posted by Aaron Gary on Feb 16, 2011, 5:53 pm

Has anyone else looked at this credit for their projects? It seems like a gimme with the Option 2 threshold and I want to make sure I am not missing something

Last reply: Gary Hansen, Jan 25, 2015, 9:38 pm

What's the problem?

General forums
posted by Nadav Malin on Sep 17, 2012, 2:54 pm

However, if I had found this forum when I first got the e-mail from USGBC I might have voiced a lot of the same gripes as Hernando and Karen. I was flabbergasted by the major changes/increases with little...

Last reply: Eric Johnson, Oct 5, 2012, 2:14 pm

other providers

General forums
posted by Tristan Roberts on Mar 14, 2013, 9:13 am

Great post, Paula, and congratulations!
We'd love to hear questions and comments from other LEED Green Associates who have taken the exam, or are thinking about it.
I'm guessing we...

Last reply: Mei Velas-Suarin, Jul 4, 2014, 12:51 pm

Cost of LEED report- Internationl projects

Understanding the Cost of LEED-NC Project Certification
posted by Rouba Nassar on Apr 16, 2010, 2:58 am

Does the report also covers cost issues for undertaking LEED certifications outside the US? Such as in the Middle-East?

Last reply: Andrew Gil, Jul 21, 2014, 3:20 pm

Common schedule for VAV zones with differing occupancies?

NC-2009 EAp2: Minimum Energy Performance
posted by Matt Scott on Sep 6, 2013, 4:49 pm

What's the proper methodology for the following situation?

Let's say I'm modeling a building that qualifies for a System #5...

Last reply: Matt Scott, Sep 24, 2013, 11:07 am

Domestic Water Heating

NC-2009 EAp2: Minimum Energy Performance
posted by David Mirabile on Oct 17, 2013, 5:10 pm

I am modeling a school in which we are using several water-to-water geothermal heat pumps for our domestic water heating. I am assuming I should be able to get significant energy savings in...

Last reply: Francesco Passerini, Jul 10, 2015, 4:59 am

Help w/ wrangling RECs.

CS-2009 EAc2: On-Site Renewable Energy
posted by Brian Salazar on May 19, 2015, 4:13 pm

Preface: LEED CS v3.0 Project in Massachusetts.

Our project is designed to produce 16% on-site...

Last reply: Marcus Sheffer, Jul 9, 2015, 5:05 pm

Baseline building: daylight controls

NC-v4 EAp2: Minimum Energy Performance
posted by Ricardo Sá on Oct 3, 2017, 8:11 am


my question is related with the need to consider (or not) daylight controls in baseline building. Table G3.1 (bullet 6) from ASHRAE 90.1-2010 states the following:

1) Proposed...

Last reply: Keith Robertson, Nov 27, 2019, 2:57 pm

LZ3 Façade lighting exemption

NC-v4 SSc6: Light Pollution Reduction
posted by Nuttanee Vongveeranonchai on May 1, 2018, 12:27 pm

Dear all, 

I have a question about SSc6 Uplight and Trespass Exemptions. 

I am working on a commercial mixed-use project located in LZ3. Our designer has proposed main façade...

Last reply: Afogreen Build, Feb 5, 2020, 2:39 am