An existing building has replaced their windows and roof in 2007, exceeding ASHRAE 90.1-2007 standards. The building is currently going through a large renovation and will be registering under LEED v3 2009. Can credit be taken in the Whole Building Energy Simulation (EAc1) for the improved thermal performance of the windows and roof even though they were replaced prior to being registered for LEED.
Thanks,
Jaimee
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
August 9, 2010 - 5:06 pm
Since the window replacement would not be part of the scope of work of your LEED project I don't think you can claim credit for them. Unfortunately under Appendix G you will need to model the existing windows in the baseline building model (see Appendix G Table G3.1.5 Baseline (f)).