Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Assuming you are just talking about Title 24 compliance (the title wasn't clear):
I'd generally agree with the above. They are (or should be) all identical in terms of results and modeling capabilities, so there is no reason there. I tend to use IES for LEED models and other things, so the benefit there is that you already have geometry and glazing, and are familiar with the editor. IES also adds a couple useful tabular editing views to the CBECC-Com model which can save time. As you correctly point out, there will always be a slight lag in IES updating to the most recent version of CBECC-Com, and for that reason I always finish my models in the native CBECC-Com app. I would guess if someone has a workflow in OpenStudio that they are comfortable with, that the same rationale would apply to continuing to use it.
