diff --git a/lib/measures/nze_hvac/measure.rb b/lib/measures/nze_hvac/measure.rb
index 180c89e..5570e78 100644
--- a/lib/measures/nze_hvac/measure.rb
+++ b/lib/measures/nze_hvac/measure.rb
@@ -356,7 +356,7 @@ def run(model, runner, user_arguments)
       when 'Automatic Partition'
         # group zones by occupancy type (residential/nonresidential)
         # split non-dominant groups if their total area exceeds 20,000 ft2.
-        sys_groups = OpenstudioStandards::Geometry.model_group_thermal_zones_by_occupancy_type(model, OpenStudio.convert(20000, 'ft^2', 'm^2').get)
+        sys_groups = OpenstudioStandards::Geometry.model_group_thermal_zones_by_occupancy_type(model, min_ara_m2: OpenStudio.convert(20000, 'ft^2', 'm^2').get)
 
         # assume secondary system type is PSZ-AC for VAV Reheat otherwise assume same hvac system type
         sec_sys_type = hvac_system_type # same as primary system type
@@ -387,7 +387,7 @@ def run(model, runner, user_arguments)
         end
 
       when 'One System Per Building Type'
-        system_groups = OpenstudioStandards::Geometry.model_group_thermal_zones_by_building_type(model, 0.0)
+        system_groups = OpenstudioStandards::Geometry.model_group_thermal_zones_by_building_type(model, min_area_m2: 0.0)
         system_groups.each do |system_group|
           add_system_to_zones(model, runner, hvac_system_type, system_group['zones'], std, doas_dcv: doas_dcv)
         end
diff --git a/lib/measures/nze_hvac/measure.xml b/lib/measures/nze_hvac/measure.xml
index 54e8d03..8ba9f35 100644
--- a/lib/measures/nze_hvac/measure.xml
+++ b/lib/measures/nze_hvac/measure.xml
@@ -3,8 +3,8 @@
   <schema_version>3.1</schema_version>
   <name>nze_hvac</name>
   <uid>f060dff2-b28d-4194-a6af-e66d88ddb33c</uid>
-  <version_id>fb498bc9-7394-45d8-a884-9fe5b872176d</version_id>
-  <version_modified>2024-05-09T17:21:18Z</version_modified>
+  <version_id>871fe5ea-93e5-4829-ad32-672bfaf0581c</version_id>
+  <version_modified>2024-05-09T19:08:57Z</version_modified>
   <xml_checksum>0E5E4776</xml_checksum>
   <class_name>NzeHvac</class_name>
   <display_name>NZEHVAC</display_name>
@@ -258,7 +258,7 @@
       <filename>measure.rb</filename>
       <filetype>rb</filetype>
       <usage_type>script</usage_type>
-      <checksum>7538C55C</checksum>
+      <checksum>9C0498C3</checksum>
     </file>
     <file>
       <filename>NZEHVAC_Test.rb</filename>