If a proposed chiller (or boiler) meets the Tables 6.8.1A-J in 2007 or 2010, when tested with water at AHRI conditions but is designed to be used with glycol for freeze protection, then its actual

The prescriptive path under Option 3 still references the "Advanced Buildings Core Performance Guide".  However, this guide has been "sunset" by NBI and no longer exists.  Typic

Hi all, does anyone have any reference to USGBC guidance or experience in modeling CHP when it is electricity lead not thermal lead? 

i need to know what is required to be filled exactly in roof construction and whatis meant by building ID ??

We have a project space where the built up area is 2 lakh sqft out of which the conditioned space is 1000 sqft. Is energy modeling necessary in this scenario?

As we are outside of the USA, ASHRAE 90.1:2010 is a new requirement that came with v4 and our designers have no experience in interpreting and applying the mandatory requirements.

Hi Markus, Thanks for your reply. I've been trying to undestand the explanation of 90.1-2013 User's Manual, page G-35.

We are designing a research and development facility for an equipment manufacturer and trying to pursue LEED certification for the facility.

Thank you USGBC for Energy Performance Calculator. I remember the days before...where you had to make your own more or less whilst fumbling through projects.

Does anyone know if either prereq EA - Minimum Energy Performance, or the Optimize Energy Performance credit need a third party review as it did under the CaGBC's LEED 2009?