diff --git a/hub/exports/building_energy/idf.py b/hub/exports/building_energy/idf.py
index 69c2d014..2621992b 100644
--- a/hub/exports/building_energy/idf.py
+++ b/hub/exports/building_energy/idf.py
@@ -641,12 +641,12 @@ class Idf:
                              Fraction_of_Shading_Surface_That_Is_Glazed=0)
 
   def _add_pure_geometry(self, building, zone_name):
-    for surface in building.surfaces:
+    for index, surface in enumerate(building.surfaces):
       outside_boundary_condition = 'Outdoors'
       sun_exposure = 'SunExposed'
       wind_exposure = 'WindExposed'
       idf_surface_type = self.idf_surfaces[surface.type]
-      _kwargs = {'Name': f'{surface.name}',
+      _kwargs = {'Name': f'Building_{building.name}_surface_{index}',
                  'Surface_Type': idf_surface_type,
                  'Zone_Name': zone_name}
       if surface.type == cte.GROUND:
@@ -655,7 +655,7 @@ class Idf:
         wind_exposure = 'NoWind'
       if surface.percentage_shared is not None and surface.percentage_shared > 0.5:
         outside_boundary_condition = 'Surface'
-        outside_boundary_condition_object = surface.name
+        outside_boundary_condition_object = f'Building_{building.name}_surface_{index}'
         sun_exposure = 'NoSun'
         wind_exposure = 'NoWind'
         _kwargs['Outside_Boundary_Condition_Object'] = outside_boundary_condition_object
@@ -680,12 +680,12 @@ class Idf:
 
   def _add_surfaces(self, building, zone_name):
     for thermal_zone in building.thermal_zones_from_internal_zones:
-      for boundary in thermal_zone.thermal_boundaries:
+      for index, boundary in enumerate(thermal_zone.thermal_boundaries):
         idf_surface_type = self.idf_surfaces[boundary.parent_surface.type]
         outside_boundary_condition = 'Outdoors'
         sun_exposure = 'SunExposed'
         wind_exposure = 'WindExposed'
-        _kwargs = {'Name': f'{boundary.parent_surface.name}',
+        _kwargs = {'Name': f'Building_{building.name}_surface_{index}',
                    'Surface_Type': idf_surface_type,
                    'Zone_Name': zone_name}
         if boundary.parent_surface.type == cte.GROUND:
@@ -694,7 +694,7 @@ class Idf:
           wind_exposure = 'NoWind'
         if boundary.parent_surface.percentage_shared is not None and boundary.parent_surface.percentage_shared > 0.5:
           outside_boundary_condition = 'Surface'
-          outside_boundary_condition_object = boundary.parent_surface.name
+          outside_boundary_condition_object = f'Building_{building.name}_surface_{index}'
           sun_exposure = 'NoSun'
           wind_exposure = 'NoWind'
           _kwargs['Outside_Boundary_Condition_Object'] = outside_boundary_condition_object