diff --git a/homeassistant/components/lyric/__init__.py b/homeassistant/components/lyric/__init__.py
index 84ef3a2b7db..349e4f871a3 100644
--- a/homeassistant/components/lyric/__init__.py
+++ b/homeassistant/components/lyric/__init__.py
@@ -12,6 +12,7 @@ from aiolyric import Lyric
 from aiolyric.exceptions import LyricAuthenticationException, LyricException
 from aiolyric.objects.device import LyricDevice
 from aiolyric.objects.location import LyricLocation
+from aiolyric.objects.priority import LyricAccessories, LyricRoom
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import Platform
@@ -77,6 +78,15 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         try:
             async with asyncio.timeout(60):
                 await lyric.get_locations()
+                await asyncio.gather(
+                    *(
+                        lyric.get_thermostat_rooms(location.locationID, device.deviceID)
+                        for location in lyric.locations
+                        for device in location.devices
+                        if device.deviceClass == "Thermostat"
+                    )
+                )
+
         except LyricAuthenticationException as exception:
             # Attempt to refresh the token before failing.
             # Honeywell appear to have issues keeping tokens saved.
@@ -159,8 +169,43 @@ class LyricDeviceEntity(LyricEntity):
     def device_info(self) -> DeviceInfo:
         """Return device information about this Honeywell Lyric instance."""
         return DeviceInfo(
+            identifiers={(dr.CONNECTION_NETWORK_MAC, self._mac_id)},
             connections={(dr.CONNECTION_NETWORK_MAC, self._mac_id)},
             manufacturer="Honeywell",
             model=self.device.deviceModel,
-            name=self.device.name,
+            name=f"{self.device.name} Thermostat",
+        )
+
+
+class LyricAccessoryEntity(LyricDeviceEntity):
+    """Defines a Honeywell Lyric accessory entity, a sub-device of a thermostat."""
+
+    def __init__(
+        self,
+        coordinator: DataUpdateCoordinator[Lyric],
+        location: LyricLocation,
+        device: LyricDevice,
+        room: LyricRoom,
+        accessory: LyricAccessories,
+        key: str,
+    ) -> None:
+        """Initialize the Honeywell Lyric accessory entity."""
+        super().__init__(coordinator, location, device, key)
+        self._room = room
+        self._accessory = accessory
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        """Return device information about this Honeywell Lyric instance."""
+        return DeviceInfo(
+            identifiers={
+                (
+                    f"{dr.CONNECTION_NETWORK_MAC}_room_accessory",
+                    f"{self._mac_id}_room{self._room.id}_accessory{self._accessory.id}",
+                )
+            },
+            manufacturer="Honeywell",
+            model="RCHTSENSOR",
+            name=f"{self._room.roomName} Sensor",
+            via_device=(dr.CONNECTION_NETWORK_MAC, self._mac_id),
         )
diff --git a/homeassistant/components/lyric/sensor.py b/homeassistant/components/lyric/sensor.py
index 276336e02cc..64f60fa6611 100644
--- a/homeassistant/components/lyric/sensor.py
+++ b/homeassistant/components/lyric/sensor.py
@@ -9,6 +9,7 @@ from datetime import datetime, timedelta
 from aiolyric import Lyric
 from aiolyric.objects.device import LyricDevice
 from aiolyric.objects.location import LyricLocation
+from aiolyric.objects.priority import LyricAccessories, LyricRoom
 
 from homeassistant.components.sensor import (
     SensorDeviceClass,
@@ -24,7 +25,7 @@ from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 from homeassistant.util import dt as dt_util
 
-from . import LyricDeviceEntity
+from . import LyricAccessoryEntity, LyricDeviceEntity
 from .const import (
     DOMAIN,
     PRESET_HOLD_UNTIL,
@@ -50,6 +51,14 @@ class LyricSensorEntityDescription(SensorEntityDescription):
     suitable_fn: Callable[[LyricDevice], bool]
 
 
+@dataclass(frozen=True, kw_only=True)
+class LyricSensorAccessoryEntityDescription(SensorEntityDescription):
+    """Class describing Honeywell Lyric room sensor entities."""
+
+    value_fn: Callable[[LyricRoom, LyricAccessories], StateType | datetime]
+    suitable_fn: Callable[[LyricRoom, LyricAccessories], bool]
+
+
 DEVICE_SENSORS: list[LyricSensorEntityDescription] = [
     LyricSensorEntityDescription(
         key="indoor_temperature",
@@ -109,6 +118,26 @@ DEVICE_SENSORS: list[LyricSensorEntityDescription] = [
     ),
 ]
 
+ACCESSORY_SENSORS: list[LyricSensorAccessoryEntityDescription] = [
+    LyricSensorAccessoryEntityDescription(
+        key="room_temperature",
+        translation_key="room_temperature",
+        device_class=SensorDeviceClass.TEMPERATURE,
+        state_class=SensorStateClass.MEASUREMENT,
+        value_fn=lambda _, accessory: accessory.temperature,
+        suitable_fn=lambda _, accessory: accessory.type == "IndoorAirSensor",
+    ),
+    LyricSensorAccessoryEntityDescription(
+        key="room_humidity",
+        translation_key="room_humidity",
+        device_class=SensorDeviceClass.HUMIDITY,
+        state_class=SensorStateClass.MEASUREMENT,
+        native_unit_of_measurement=PERCENTAGE,
+        value_fn=lambda room, _: room.roomAvgHumidity,
+        suitable_fn=lambda _, accessory: accessory.type == "IndoorAirSensor",
+    ),
+]
+
 
 def get_setpoint_status(status: str, time: str) -> str | None:
     """Get status of the setpoint."""
@@ -147,6 +176,18 @@ async def async_setup_entry(
         if device_sensor.suitable_fn(device)
     )
 
+    async_add_entities(
+        LyricAccessorySensor(
+            coordinator, accessory_sensor, location, device, room, accessory
+        )
+        for location in coordinator.data.locations
+        for device in location.devices
+        for room in coordinator.data.rooms_dict.get(device.macID, {}).values()
+        for accessory in room.accessories
+        for accessory_sensor in ACCESSORY_SENSORS
+        if accessory_sensor.suitable_fn(room, accessory)
+    )
+
 
 class LyricSensor(LyricDeviceEntity, SensorEntity):
     """Define a Honeywell Lyric sensor."""
@@ -178,3 +219,40 @@ class LyricSensor(LyricDeviceEntity, SensorEntity):
     def native_value(self) -> StateType | datetime:
         """Return the state."""
         return self.entity_description.value_fn(self.device)
+
+
+class LyricAccessorySensor(LyricAccessoryEntity, SensorEntity):
+    """Define a Honeywell Lyric sensor."""
+
+    entity_description: LyricSensorAccessoryEntityDescription
+
+    def __init__(
+        self,
+        coordinator: DataUpdateCoordinator[Lyric],
+        description: LyricSensorAccessoryEntityDescription,
+        location: LyricLocation,
+        parentDevice: LyricDevice,
+        room: LyricRoom,
+        accessory: LyricAccessories,
+    ) -> None:
+        """Initialize."""
+        super().__init__(
+            coordinator,
+            location,
+            parentDevice,
+            room,
+            accessory,
+            f"{parentDevice.macID}_room{room.id}_acc{accessory.id}_{description.key}",
+        )
+        self.room = room
+        self.entity_description = description
+        if description.device_class == SensorDeviceClass.TEMPERATURE:
+            if parentDevice.units == "Fahrenheit":
+                self._attr_native_unit_of_measurement = UnitOfTemperature.FAHRENHEIT
+            else:
+                self._attr_native_unit_of_measurement = UnitOfTemperature.CELSIUS
+
+    @property
+    def native_value(self) -> StateType | datetime:
+        """Return the state."""
+        return self.entity_description.value_fn(self._room, self._accessory)
diff --git a/homeassistant/components/lyric/strings.json b/homeassistant/components/lyric/strings.json
index 68bb6292f9e..739ad7fad68 100644
--- a/homeassistant/components/lyric/strings.json
+++ b/homeassistant/components/lyric/strings.json
@@ -41,6 +41,12 @@
       },
       "setpoint_status": {
         "name": "Setpoint status"
+      },
+      "room_temperature": {
+        "name": "Room temperature"
+      },
+      "room_humidity": {
+        "name": "Room humidity"
       }
     }
   },