Energy Modelling nil:NilClass


I’ve been trying to use the Surface Guide to create a air boundary between two rooms however I get the error: 1. Solution exception:undefined method `[]’ for nil:NilClass when I try to run a energy model. Any suggestions? Ive (47.4 KB)
a simplified case. I believe its to do with a Air Boundary but I’m unsure how to fix it.


Hi @Shanice ,

In order to have a valid Honeybee model for EnergyPlus/OpenStudio, Air Boundaries can only be set for Faces that have adjacencies solved on them. While the “HB Properties by Guide Surface” has its uses, this is the more elegant way to set up your model with AirBoundaries: (44.5 KB)

Thank you for the clarification