EnergyGauge Support Center

I have a Builder doing an addition on an existing house using the existing HVAC system. The County is asking for a Manual J Calc but the program will not let me unless I do the whole house. Problem with that is it probably won't pass. How can I get the Manual J with the existing unit without having to do calcs for the whole house?

 When you run the program, there is an option at the beginning for doing the calc as an addition.