code: def hvac_autosize(self):
          
  
          for i in range(len(self.BEM)):
              if self.is_near_zero(self.autosize) == False:
                  self.BEM[i].building.coolCap = 9999.
                  self.BEM[i].building.heatCap = 9999.
docs: Section 6 - HVAC Autosizing (unlimited cooling & heating)