diff --git a/homeassistant/components/sensor/__init__.py b/homeassistant/components/sensor/__init__.py
index 56171707338..0268bd8b207 100644
--- a/homeassistant/components/sensor/__init__.py
+++ b/homeassistant/components/sensor/__init__.py
@@ -365,7 +365,7 @@ class SensorEntity(Entity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         unit converter supports both the native and the suggested units of measurement.
         """
         # Make sure we can convert the units
-        if (
+        if self.native_unit_of_measurement != suggested_unit_of_measurement and (
             (unit_converter := UNIT_CONVERTERS.get(self.device_class)) is None
             or self.__native_unit_of_measurement_compat
             not in unit_converter.VALID_UNITS
diff --git a/tests/components/sensor/test_init.py b/tests/components/sensor/test_init.py
index ce78edfe481..c31abe62826 100644
--- a/tests/components/sensor/test_init.py
+++ b/tests/components/sensor/test_init.py
@@ -32,6 +32,7 @@ from homeassistant.components.sensor.const import STATE_CLASS_UNITS, UNIT_CONVER
 from homeassistant.config_entries import ConfigEntry, ConfigFlow
 from homeassistant.const import (
     ATTR_UNIT_OF_MEASUREMENT,
+    CONCENTRATION_PARTS_PER_MILLION,
     PERCENTAGE,
     STATE_UNKNOWN,
     EntityCategory,
@@ -2938,6 +2939,13 @@ async def test_suggested_unit_guard_invalid_unit(
             UnitOfDataRate.BITS_PER_SECOND,
             10000,
         ),
+        (
+            SensorDeviceClass.CO2,
+            CONCENTRATION_PARTS_PER_MILLION,
+            10,
+            CONCENTRATION_PARTS_PER_MILLION,
+            10,
+        ),
     ],
 )
 async def test_suggested_unit_guard_valid_unit(
diff --git a/tests/components/tuya/snapshots/test_sensor.ambr b/tests/components/tuya/snapshots/test_sensor.ambr
index ffb7e8f4bad..82b7c43c96f 100644
--- a/tests/components/tuya/snapshots/test_sensor.ambr
+++ b/tests/components/tuya/snapshots/test_sensor.ambr
@@ -507,6 +507,62 @@
     'state': '100.0',
   })
 # ---
+# name: test_platform_setup_and_discovery[sensor.aqi_carbon_dioxide-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.aqi_carbon_dioxide',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor.private': dict({
+        'suggested_unit_of_measurement': 'ppm',
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.CO2: 'carbon_dioxide'>,
+    'original_icon': None,
+    'original_name': 'Carbon dioxide',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'carbon_dioxide',
+    'unique_id': 'tuya.iks13mcaiyie3rryjb2occo2_value',
+    'unit_of_measurement': 'ppm',
+  })
+# ---
+# name: test_platform_setup_and_discovery[sensor.aqi_carbon_dioxide-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'carbon_dioxide',
+      'friendly_name': 'AQI Carbon dioxide',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'ppm',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.aqi_carbon_dioxide',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '541.0',
+  })
+# ---
 # name: test_platform_setup_and_discovery[sensor.aqi_formaldehyde-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
@@ -612,6 +668,62 @@
     'state': '53.0',
   })
 # ---
+# name: test_platform_setup_and_discovery[sensor.aqi_pm2_5-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.aqi_pm2_5',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor.private': dict({
+        'suggested_unit_of_measurement': 'μg/m³',
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.PM25: 'pm25'>,
+    'original_icon': None,
+    'original_name': 'PM2.5',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'pm25',
+    'unique_id': 'tuya.iks13mcaiyie3rryjb2ocpm25_value',
+    'unit_of_measurement': 'μg/m³',
+  })
+# ---
+# name: test_platform_setup_and_discovery[sensor.aqi_pm2_5-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'pm25',
+      'friendly_name': 'AQI PM2.5',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'μg/m³',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.aqi_pm2_5',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '17.0',
+  })
+# ---
 # name: test_platform_setup_and_discovery[sensor.aqi_temperature-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
@@ -8146,6 +8258,62 @@
     'state': '42.0',
   })
 # ---
+# name: test_platform_setup_and_discovery[sensor.kalado_air_purifier_pm2_5-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.kalado_air_purifier_pm2_5',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor.private': dict({
+        'suggested_unit_of_measurement': 'μg/m³',
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.PM25: 'pm25'>,
+    'original_icon': None,
+    'original_name': 'PM2.5',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'pm25',
+    'unique_id': 'tuya.yo2karkjuhzztxsfjkpm25',
+    'unit_of_measurement': 'μg/m³',
+  })
+# ---
+# name: test_platform_setup_and_discovery[sensor.kalado_air_purifier_pm2_5-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'pm25',
+      'friendly_name': 'Kalado Air Purifier PM2.5',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'μg/m³',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.kalado_air_purifier_pm2_5',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '3.0',
+  })
+# ---
 # name: test_platform_setup_and_discovery[sensor.keller_current-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
@@ -13310,6 +13478,62 @@
     'state': '97.0',
   })
 # ---
+# name: test_platform_setup_and_discovery[sensor.smogo_carbon_monoxide-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.smogo_carbon_monoxide',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor.private': dict({
+        'suggested_unit_of_measurement': 'ppm',
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.CO: 'carbon_monoxide'>,
+    'original_icon': None,
+    'original_name': 'Carbon monoxide',
+    'platform': 'tuya',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'carbon_monoxide',
+    'unique_id': 'tuya.swhtzki3qrz5ydchjbocco_value',
+    'unit_of_measurement': 'ppm',
+  })
+# ---
+# name: test_platform_setup_and_discovery[sensor.smogo_carbon_monoxide-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'carbon_monoxide',
+      'friendly_name': 'Smogo Carbon monoxide',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': 'ppm',
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.smogo_carbon_monoxide',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '0.0',
+  })
+# ---
 # name: test_platform_setup_and_discovery[sensor.smoke_alarm_battery-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({