diff --git a/homeassistant/components/opentherm_gw/binary_sensor.py b/homeassistant/components/opentherm_gw/binary_sensor.py
index 7c3760653e8..2d55cd9ddfb 100644
--- a/homeassistant/components/opentherm_gw/binary_sensor.py
+++ b/homeassistant/components/opentherm_gw/binary_sensor.py
@@ -1,25 +1,287 @@
 """Support for OpenTherm Gateway binary sensors."""
 
-import logging
+from dataclasses import dataclass
 
-from homeassistant.components.binary_sensor import ENTITY_ID_FORMAT, BinarySensorEntity
+from pyotgw import vars as gw_vars
+
+from homeassistant.components.binary_sensor import (
+    ENTITY_ID_FORMAT,
+    BinarySensorDeviceClass,
+    BinarySensorEntity,
+    BinarySensorEntityDescription,
+)
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_ID
 from homeassistant.core import HomeAssistant, callback
-from homeassistant.helpers.device_registry import DeviceInfo
-from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity import async_generate_entity_id
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
-from . import DOMAIN
-from .const import (
-    BINARY_SENSOR_INFO,
-    DATA_GATEWAYS,
-    DATA_OPENTHERM_GW,
-    TRANSLATE_SOURCE,
-)
+from . import OpenThermGatewayDevice
+from .const import DATA_GATEWAYS, DATA_OPENTHERM_GW
+from .entity import OpenThermEntity, OpenThermEntityDescription
 
-_LOGGER = logging.getLogger(__name__)
+
+@dataclass(frozen=True, kw_only=True)
+class OpenThermBinarySensorEntityDescription(
+    BinarySensorEntityDescription, OpenThermEntityDescription
+):
+    """Describes opentherm_gw binary sensor entity."""
+
+
+BINARY_SENSOR_INFO: tuple[
+    tuple[list[str], OpenThermBinarySensorEntityDescription], ...
+] = (
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_MASTER_CH_ENABLED,
+            friendly_name_format="Thermostat Central Heating {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_MASTER_DHW_ENABLED,
+            friendly_name_format="Thermostat Hot Water {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_MASTER_COOLING_ENABLED,
+            friendly_name_format="Thermostat Cooling {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_MASTER_OTC_ENABLED,
+            friendly_name_format="Thermostat Outside Temperature Correction {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_MASTER_CH2_ENABLED,
+            friendly_name_format="Thermostat Central Heating 2 {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_FAULT_IND,
+            friendly_name_format="Boiler Fault {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_CH_ACTIVE,
+            friendly_name_format="Boiler Central Heating {}",
+            device_class=BinarySensorDeviceClass.HEAT,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_DHW_ACTIVE,
+            friendly_name_format="Boiler Hot Water {}",
+            device_class=BinarySensorDeviceClass.HEAT,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_FLAME_ON,
+            friendly_name_format="Boiler Flame {}",
+            device_class=BinarySensorDeviceClass.HEAT,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_COOLING_ACTIVE,
+            friendly_name_format="Boiler Cooling {}",
+            device_class=BinarySensorDeviceClass.COLD,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_CH2_ACTIVE,
+            friendly_name_format="Boiler Central Heating 2 {}",
+            device_class=BinarySensorDeviceClass.HEAT,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_DIAG_IND,
+            friendly_name_format="Boiler Diagnostics {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_DHW_PRESENT,
+            friendly_name_format="Boiler Hot Water Present {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_CONTROL_TYPE,
+            friendly_name_format="Boiler Control Type {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_COOLING_SUPPORTED,
+            friendly_name_format="Boiler Cooling Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_DHW_CONFIG,
+            friendly_name_format="Boiler Hot Water Configuration {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_MASTER_LOW_OFF_PUMP,
+            friendly_name_format="Boiler Pump Commands Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_CH2_PRESENT,
+            friendly_name_format="Boiler Central Heating 2 Present {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_SERVICE_REQ,
+            friendly_name_format="Boiler Service Required {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_REMOTE_RESET,
+            friendly_name_format="Boiler Remote Reset Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_LOW_WATER_PRESS,
+            friendly_name_format="Boiler Low Water Pressure {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_GAS_FAULT,
+            friendly_name_format="Boiler Gas Fault {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_AIR_PRESS_FAULT,
+            friendly_name_format="Boiler Air Pressure Fault {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_SLAVE_WATER_OVERTEMP,
+            friendly_name_format="Boiler Water Overtemperature {}",
+            device_class=BinarySensorDeviceClass.PROBLEM,
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_REMOTE_TRANSFER_DHW,
+            friendly_name_format="Remote Hot Water Setpoint Transfer Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_REMOTE_TRANSFER_MAX_CH,
+            friendly_name_format="Remote Maximum Central Heating Setpoint Write Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_REMOTE_RW_DHW,
+            friendly_name_format="Remote Hot Water Setpoint Write Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_REMOTE_RW_MAX_CH,
+            friendly_name_format="Remote Central Heating Setpoint Write Support {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_ROVRD_MAN_PRIO,
+            friendly_name_format="Remote Override Manual Change Priority {}",
+        ),
+    ),
+    (
+        [gw_vars.BOILER, gw_vars.THERMOSTAT],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.DATA_ROVRD_AUTO_PRIO,
+            friendly_name_format="Remote Override Program Change Priority {}",
+        ),
+    ),
+    (
+        [gw_vars.OTGW],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.OTGW_GPIO_A_STATE,
+            friendly_name_format="Gateway GPIO A {}",
+        ),
+    ),
+    (
+        [gw_vars.OTGW],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.OTGW_GPIO_B_STATE,
+            friendly_name_format="Gateway GPIO B {}",
+        ),
+    ),
+    (
+        [gw_vars.OTGW],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.OTGW_IGNORE_TRANSITIONS,
+            friendly_name_format="Gateway Ignore Transitions {}",
+        ),
+    ),
+    (
+        [gw_vars.OTGW],
+        OpenThermBinarySensorEntityDescription(
+            key=gw_vars.OTGW_OVRD_HB,
+            friendly_name_format="Gateway Override High Byte {}",
+        ),
+    ),
+)
 
 
 async def async_setup_entry(
@@ -31,65 +293,35 @@ async def async_setup_entry(
     gw_dev = hass.data[DATA_OPENTHERM_GW][DATA_GATEWAYS][config_entry.data[CONF_ID]]
 
     async_add_entities(
-        OpenThermBinarySensor(
-            gw_dev,
-            var,
-            source,
-            info[0],
-            info[1],
-        )
-        for var, info in BINARY_SENSOR_INFO.items()
-        for source in info[2]
+        OpenThermBinarySensor(gw_dev, source, description)
+        for sources, description in BINARY_SENSOR_INFO
+        for source in sources
     )
 
 
-class OpenThermBinarySensor(BinarySensorEntity):
+class OpenThermBinarySensor(OpenThermEntity, BinarySensorEntity):
     """Represent an OpenTherm Gateway binary sensor."""
 
-    _attr_should_poll = False
-    _attr_entity_registry_enabled_default = False
-    _attr_available = False
+    entity_description: OpenThermBinarySensorEntityDescription
 
-    def __init__(self, gw_dev, var, source, device_class, friendly_name_format):
+    def __init__(
+        self,
+        gw_dev: OpenThermGatewayDevice,
+        source: str,
+        description: OpenThermBinarySensorEntityDescription,
+    ) -> None:
         """Initialize the binary sensor."""
         self.entity_id = async_generate_entity_id(
-            ENTITY_ID_FORMAT, f"{var}_{source}_{gw_dev.gw_id}", hass=gw_dev.hass
+            ENTITY_ID_FORMAT,
+            f"{description.key}_{source}_{gw_dev.gw_id}",
+            hass=gw_dev.hass,
         )
-        self._gateway = gw_dev
-        self._var = var
-        self._source = source
-        self._attr_device_class = device_class
-        if TRANSLATE_SOURCE[source] is not None:
-            friendly_name_format = (
-                f"{friendly_name_format} ({TRANSLATE_SOURCE[source]})"
-            )
-        self._attr_name = friendly_name_format.format(gw_dev.name)
-        self._unsub_updates = None
-        self._attr_unique_id = f"{gw_dev.gw_id}-{source}-{var}"
-        self._attr_device_info = DeviceInfo(
-            identifiers={(DOMAIN, gw_dev.gw_id)},
-            manufacturer="Schelte Bron",
-            model="OpenTherm Gateway",
-            name=gw_dev.name,
-            sw_version=gw_dev.gw_version,
-        )
-
-    async def async_added_to_hass(self) -> None:
-        """Subscribe to updates from the component."""
-        _LOGGER.debug("Added OpenTherm Gateway binary sensor %s", self._attr_name)
-        self._unsub_updates = async_dispatcher_connect(
-            self.hass, self._gateway.update_signal, self.receive_report
-        )
-
-    async def async_will_remove_from_hass(self) -> None:
-        """Unsubscribe from updates from the component."""
-        _LOGGER.debug("Removing OpenTherm Gateway binary sensor %s", self._attr_name)
-        self._unsub_updates()
+        super().__init__(gw_dev, source, description)
 
     @callback
-    def receive_report(self, status):
+    def receive_report(self, status: dict[str, dict]) -> None:
         """Handle status updates from the component."""
         self._attr_available = self._gateway.connected
-        state = status[self._source].get(self._var)
+        state = status[self._source].get(self.entity_description.key)
         self._attr_is_on = None if state is None else bool(state)
         self.async_write_ha_state()
diff --git a/homeassistant/components/opentherm_gw/const.py b/homeassistant/components/opentherm_gw/const.py
index 6b0a27aec92..1d007d86181 100644
--- a/homeassistant/components/opentherm_gw/const.py
+++ b/homeassistant/components/opentherm_gw/const.py
@@ -4,7 +4,6 @@ from __future__ import annotations
 
 import pyotgw.vars as gw_vars
 
-from homeassistant.components.binary_sensor import BinarySensorDeviceClass
 from homeassistant.components.sensor import SensorDeviceClass
 from homeassistant.const import (
     PERCENTAGE,
@@ -57,168 +56,6 @@ TRANSLATE_SOURCE = {
 
 SENSOR_FLOAT_SUGGESTED_DISPLAY_PRECISION = 1
 
-BINARY_SENSOR_INFO: dict[str, list] = {
-    # [device_class, friendly_name format, [status source, ...]]
-    gw_vars.DATA_MASTER_CH_ENABLED: [
-        None,
-        "Thermostat Central Heating {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_MASTER_DHW_ENABLED: [
-        None,
-        "Thermostat Hot Water {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_MASTER_COOLING_ENABLED: [
-        None,
-        "Thermostat Cooling {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_MASTER_OTC_ENABLED: [
-        None,
-        "Thermostat Outside Temperature Correction {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_MASTER_CH2_ENABLED: [
-        None,
-        "Thermostat Central Heating 2 {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_FAULT_IND: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Fault {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_CH_ACTIVE: [
-        BinarySensorDeviceClass.HEAT,
-        "Boiler Central Heating {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_DHW_ACTIVE: [
-        BinarySensorDeviceClass.HEAT,
-        "Boiler Hot Water {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_FLAME_ON: [
-        BinarySensorDeviceClass.HEAT,
-        "Boiler Flame {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_COOLING_ACTIVE: [
-        BinarySensorDeviceClass.COLD,
-        "Boiler Cooling {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_CH2_ACTIVE: [
-        BinarySensorDeviceClass.HEAT,
-        "Boiler Central Heating 2 {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_DIAG_IND: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Diagnostics {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_DHW_PRESENT: [
-        None,
-        "Boiler Hot Water Present {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_CONTROL_TYPE: [
-        None,
-        "Boiler Control Type {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_COOLING_SUPPORTED: [
-        None,
-        "Boiler Cooling Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_DHW_CONFIG: [
-        None,
-        "Boiler Hot Water Configuration {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_MASTER_LOW_OFF_PUMP: [
-        None,
-        "Boiler Pump Commands Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_CH2_PRESENT: [
-        None,
-        "Boiler Central Heating 2 Present {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_SERVICE_REQ: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Service Required {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_REMOTE_RESET: [
-        None,
-        "Boiler Remote Reset Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_LOW_WATER_PRESS: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Low Water Pressure {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_GAS_FAULT: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Gas Fault {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_AIR_PRESS_FAULT: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Air Pressure Fault {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_SLAVE_WATER_OVERTEMP: [
-        BinarySensorDeviceClass.PROBLEM,
-        "Boiler Water Overtemperature {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_REMOTE_TRANSFER_DHW: [
-        None,
-        "Remote Hot Water Setpoint Transfer Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_REMOTE_TRANSFER_MAX_CH: [
-        None,
-        "Remote Maximum Central Heating Setpoint Write Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_REMOTE_RW_DHW: [
-        None,
-        "Remote Hot Water Setpoint Write Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_REMOTE_RW_MAX_CH: [
-        None,
-        "Remote Central Heating Setpoint Write Support {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_ROVRD_MAN_PRIO: [
-        None,
-        "Remote Override Manual Change Priority {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.DATA_ROVRD_AUTO_PRIO: [
-        None,
-        "Remote Override Program Change Priority {}",
-        [gw_vars.BOILER, gw_vars.THERMOSTAT],
-    ],
-    gw_vars.OTGW_GPIO_A_STATE: [None, "Gateway GPIO A {}", [gw_vars.OTGW]],
-    gw_vars.OTGW_GPIO_B_STATE: [None, "Gateway GPIO B {}", [gw_vars.OTGW]],
-    gw_vars.OTGW_IGNORE_TRANSITIONS: [
-        None,
-        "Gateway Ignore Transitions {}",
-        [gw_vars.OTGW],
-    ],
-    gw_vars.OTGW_OVRD_HB: [None, "Gateway Override High Byte {}", [gw_vars.OTGW]],
-}
-
 SENSOR_INFO: dict[str, list] = {
     # [device_class, unit, friendly_name, suggested_display_precision, [status source, ...]]
     gw_vars.DATA_CONTROL_SETPOINT: [
diff --git a/homeassistant/components/opentherm_gw/entity.py b/homeassistant/components/opentherm_gw/entity.py
new file mode 100644
index 00000000000..dd023896f70
--- /dev/null
+++ b/homeassistant/components/opentherm_gw/entity.py
@@ -0,0 +1,68 @@
+"""Common opentherm_gw entity properties."""
+
+import logging
+
+from homeassistant.core import callback
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.dispatcher import async_dispatcher_connect
+from homeassistant.helpers.entity import Entity, EntityDescription
+
+from . import OpenThermGatewayDevice
+from .const import DOMAIN, TRANSLATE_SOURCE
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class OpenThermEntityDescription(EntityDescription):
+    """Describe common opentherm_gw entity properties."""
+
+    friendly_name_format: str
+
+
+class OpenThermEntity(Entity):
+    """Represent an OpenTherm Gateway entity."""
+
+    _attr_should_poll = False
+    _attr_entity_registry_enabled_default = False
+    _attr_available = False
+    entity_description: OpenThermEntityDescription
+
+    def __init__(
+        self,
+        gw_dev: OpenThermGatewayDevice,
+        source: str,
+        description: OpenThermEntityDescription,
+    ) -> None:
+        """Initialize the entity."""
+        self.entity_description = description
+        self._gateway = gw_dev
+        self._source = source
+        friendly_name_format = (
+            f"{description.friendly_name_format} ({TRANSLATE_SOURCE[source]})"
+            if TRANSLATE_SOURCE[source] is not None
+            else description.friendly_name_format
+        )
+        self._attr_name = friendly_name_format.format(gw_dev.name)
+        self._attr_unique_id = f"{gw_dev.gw_id}-{source}-{description.key}"
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, gw_dev.gw_id)},
+            manufacturer="Schelte Bron",
+            model="OpenTherm Gateway",
+            name=gw_dev.name,
+            sw_version=gw_dev.gw_version,
+        )
+
+    async def async_added_to_hass(self) -> None:
+        """Subscribe to updates from the component."""
+        _LOGGER.debug("Added OpenTherm Gateway entity %s", self._attr_name)
+        self.async_on_remove(
+            async_dispatcher_connect(
+                self.hass, self._gateway.update_signal, self.receive_report
+            )
+        )
+
+    @callback
+    def receive_report(self, status: dict[str, dict]) -> None:
+        """Handle status updates from the component."""
+        # Must be implemented at the platform level.
+        raise NotImplementedError