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I think the big changes affecting the energy modelers are coming with 90.1-2013.

Here's a link with all of the changes... https://www.energycodes.gov/training-courses/ansiashraeies-standard-901-2013

Here's the direct link to the Appendix G presentation... https://www.energycodes.gov/sites/default/files/becu/90.1-2013_Performance_BECU.ppt

Check out the page about window-to-wall ratios! And computer rooms!

I think the big changes affecting the energy modelers are coming with 90.1-2013.

Here's a link with all of the changes... https://www.energycodes.gov/training-courses/ansiashraeies-standard-901-2013

Here's the direct link to the Appendix G presentation... https://www.energycodes.gov/sites/default/files/becu/90.1-2013_Performance_BECU.ppt

Check out the page about window-to-wall ratios! And computer rooms!