Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Yes, there is a good chance the surfaces are facing the wrong direction, that is the inside face of a surface might not be facing toward its assigned thermal zone. The surfaces have an inside face and and outside face and the order of vertices and geometry rules are used to determine that orientation. If it is wrong then there are severe problems with solar distribution among other things. EnergyPlus will report some warnings about floors being upside down when this problem is occuring.
