Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
You can certainly run a model without any ventilation or mechanical system, but I am not sure what would be the benefit of doing so. A model without any HVAC will probably go to extremes. It should be quiet easy to use ideal load air system to simulate a fully capable HVAC system. After doing that you can use E+ output variables to analyze the thermal behavior of roof and wall quiet easily.
