I am working on an envelope & lighting only calculation and not modeling the HVAC system (no HVAC system is input). It is my understanding that when I do this, the heating and cooling are then given identical standard and proposed inputs by the software and therefore balance out and don't effect the calculations or the compliance.
What I am finding, is that the calculations show that I am taking a huge penalty for indoor fans (of which none are specified) and penalties for space heating and space cooling. Often, the collective penalties are enough to preclude compliance.
Am I doing something wrong? Why should indoor fans cause such a penalty if I am not modeling mechanical?