diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index 4846bfb..f021f7b 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -449,7 +449,8 @@
         {.config = {.prop = toInt(VehicleProperty::HVAC_MAX_DEFROST_ON),
                     .access = VehiclePropertyAccess::READ_WRITE,
                     .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                    .areaConfigs = {VehicleAreaConfig{.areaId = HVAC_ALL}}},
+                    .areaConfigs = {VehicleAreaConfig{.areaId = HVAC_FRONT_ROW},
+                                    VehicleAreaConfig{.areaId = HVAC_REAR_ROW}}},
          .initialValue = {.int32Values = {0}}},
 
         {.config = {.prop = toInt(VehicleProperty::HVAC_RECIRC_ON),
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PropertyUtils.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PropertyUtils.h
index f58e09a..e866f70 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PropertyUtils.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PropertyUtils.h
@@ -50,6 +50,9 @@
           VehicleAreaWheel::LEFT_REAR | VehicleAreaWheel::RIGHT_REAR);
 constexpr int SEAT_1_LEFT = (int)(VehicleAreaSeat::ROW_1_LEFT);
 constexpr int SEAT_1_RIGHT = (int)(VehicleAreaSeat::ROW_1_RIGHT);
+constexpr int HVAC_FRONT_ROW = (int)(VehicleAreaSeat::ROW_1_LEFT | VehicleAreaSeat::ROW_1_RIGHT);
+constexpr int HVAC_REAR_ROW = (int)(VehicleAreaSeat::ROW_2_LEFT | VehicleAreaSeat::ROW_2_CENTER |
+                                    VehicleAreaSeat::ROW_2_RIGHT);
 constexpr int HVAC_LEFT = (int)(VehicleAreaSeat::ROW_1_LEFT | VehicleAreaSeat::ROW_2_LEFT |
                                 VehicleAreaSeat::ROW_2_CENTER);
 constexpr int HVAC_RIGHT = (int)(VehicleAreaSeat::ROW_1_RIGHT | VehicleAreaSeat::ROW_2_RIGHT);
diff --git a/automotive/vehicle/aidl/impl/default_config/JsonConfigLoader/src/JsonConfigLoader.cpp b/automotive/vehicle/aidl/impl/default_config/JsonConfigLoader/src/JsonConfigLoader.cpp
index ea1437e..57af04c 100644
--- a/automotive/vehicle/aidl/impl/default_config/JsonConfigLoader/src/JsonConfigLoader.cpp
+++ b/automotive/vehicle/aidl/impl/default_config/JsonConfigLoader/src/JsonConfigLoader.cpp
@@ -104,6 +104,8 @@
         {"HVAC_ALL", HVAC_ALL},
         {"HVAC_LEFT", HVAC_LEFT},
         {"HVAC_RIGHT", HVAC_RIGHT},
+        {"HVAC_FRONT_ROW", HVAC_FRONT_ROW},
+        {"HVAC_REAR_ROW", HVAC_REAR_ROW},
         {"WINDOW_1_LEFT", WINDOW_1_LEFT},
         {"WINDOW_1_RIGHT", WINDOW_1_RIGHT},
         {"WINDOW_2_LEFT", WINDOW_2_LEFT},
diff --git a/automotive/vehicle/aidl/impl/default_config/config/DefaultProperties.json b/automotive/vehicle/aidl/impl/default_config/config/DefaultProperties.json
index 0a859af..2d1e9ab 100644
--- a/automotive/vehicle/aidl/impl/default_config/config/DefaultProperties.json
+++ b/automotive/vehicle/aidl/impl/default_config/config/DefaultProperties.json
@@ -2033,19 +2033,10 @@
             },
             "areas": [
                 {
-                    "areaId": "Constants::SEAT_1_LEFT"
+                    "areaId": "Constants::HVAC_FRONT_ROW"
                 },
                 {
-                    "areaId": "Constants::SEAT_1_RIGHT"
-                },
-                {
-                    "areaId": "Constants::SEAT_2_LEFT"
-                },
-                {
-                    "areaId": "Constants::SEAT_2_RIGHT"
-                },
-                {
-                    "areaId": "Constants::SEAT_2_CENTER"
+                    "areaId": "Constants::HVAC_REAR_ROW"
                 }
             ]
         },
diff --git a/automotive/vehicle/aidl/impl/utils/common/include/PropertyUtils.h b/automotive/vehicle/aidl/impl/utils/common/include/PropertyUtils.h
index 78b61f7..f2327e1 100644
--- a/automotive/vehicle/aidl/impl/utils/common/include/PropertyUtils.h
+++ b/automotive/vehicle/aidl/impl/utils/common/include/PropertyUtils.h
@@ -97,6 +97,8 @@
 constexpr int HVAC_LEFT = SEAT_1_LEFT | SEAT_2_LEFT | SEAT_2_CENTER;
 constexpr int HVAC_RIGHT = SEAT_1_RIGHT | SEAT_2_RIGHT;
 constexpr int HVAC_ALL = HVAC_LEFT | HVAC_RIGHT;
+constexpr int HVAC_FRONT_ROW = SEAT_1_LEFT | SEAT_1_RIGHT;
+constexpr int HVAC_REAR_ROW = SEAT_2_LEFT | SEAT_2_CENTER | SEAT_2_RIGHT;
 
 }  // namespace vehicle
 }  // namespace automotive