diff --git a/homeassistant/components/coolmaster/__init__.py b/homeassistant/components/coolmaster/__init__.py
index ef2b5328f96..6e244abfd84 100644
--- a/homeassistant/components/coolmaster/__init__.py
+++ b/homeassistant/components/coolmaster/__init__.py
@@ -14,7 +14,7 @@ from .const import DATA_COORDINATOR, DATA_INFO, DOMAIN
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS = [Platform.CLIMATE]
+PLATFORMS = [Platform.CLIMATE, Platform.BINARY_SENSOR, Platform.BUTTON, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/coolmaster/binary_sensor.py b/homeassistant/components/coolmaster/binary_sensor.py
new file mode 100644
index 00000000000..6d25d7ababf
--- /dev/null
+++ b/homeassistant/components/coolmaster/binary_sensor.py
@@ -0,0 +1,47 @@
+"""Binary Sensor platform for CoolMasterNet integration."""
+from __future__ import annotations
+
+from homeassistant.components.binary_sensor import (
+    BinarySensorDeviceClass,
+    BinarySensorEntity,
+    BinarySensorEntityDescription,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import DATA_COORDINATOR, DATA_INFO, DOMAIN
+from .entity import CoolmasterEntity
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the CoolMasterNet binary_sensor platform."""
+    info = hass.data[DOMAIN][config_entry.entry_id][DATA_INFO]
+    coordinator = hass.data[DOMAIN][config_entry.entry_id][DATA_COORDINATOR]
+    async_add_entities(
+        CoolmasterCleanFilter(coordinator, unit_id, info)
+        for unit_id in coordinator.data
+    )
+
+
+class CoolmasterCleanFilter(CoolmasterEntity, BinarySensorEntity):
+    """Representation of a unit's filter state (true means need to be cleaned)."""
+
+    _attr_has_entity_name = True
+    entity_description = BinarySensorEntityDescription(
+        key="clean_filter",
+        device_class=BinarySensorDeviceClass.PROBLEM,
+        entity_category=EntityCategory.DIAGNOSTIC,
+        name="Clean filter",
+        icon="mdi:air-filter",
+    )
+
+    @property
+    def is_on(self) -> bool | None:
+        """Return true if the binary sensor is on."""
+        return self._unit.clean_filter
diff --git a/homeassistant/components/coolmaster/button.py b/homeassistant/components/coolmaster/button.py
new file mode 100644
index 00000000000..6f9a31576a2
--- /dev/null
+++ b/homeassistant/components/coolmaster/button.py
@@ -0,0 +1,42 @@
+"""Button platform for CoolMasterNet integration."""
+from __future__ import annotations
+
+from homeassistant.components.button import ButtonEntity, ButtonEntityDescription
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import DATA_COORDINATOR, DATA_INFO, DOMAIN
+from .entity import CoolmasterEntity
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the CoolMasterNet button platform."""
+    info = hass.data[DOMAIN][config_entry.entry_id][DATA_INFO]
+    coordinator = hass.data[DOMAIN][config_entry.entry_id][DATA_COORDINATOR]
+    async_add_entities(
+        CoolmasterResetFilter(coordinator, unit_id, info)
+        for unit_id in coordinator.data
+    )
+
+
+class CoolmasterResetFilter(CoolmasterEntity, ButtonEntity):
+    """Reset the clean filter timer (once filter was cleaned)."""
+
+    _attr_has_entity_name = True
+    entity_description = ButtonEntityDescription(
+        key="reset_filter",
+        entity_category=EntityCategory.CONFIG,
+        name="Reset filter",
+        icon="mdi:air-filter",
+    )
+
+    async def async_press(self) -> None:
+        """Press the button."""
+        await self._unit.reset_filter()
+        await self.coordinator.async_refresh()
diff --git a/homeassistant/components/coolmaster/climate.py b/homeassistant/components/coolmaster/climate.py
index 933072aac9d..27c139af824 100644
--- a/homeassistant/components/coolmaster/climate.py
+++ b/homeassistant/components/coolmaster/climate.py
@@ -9,12 +9,11 @@ from homeassistant.components.climate import (
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
-from homeassistant.core import HomeAssistant, callback
-from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
 from .const import CONF_SUPPORTED_MODES, DATA_COORDINATOR, DATA_INFO, DOMAIN
+from .entity import CoolmasterEntity
 
 CM_TO_HA_STATE = {
     "heat": HVACMode.HEAT,
@@ -31,60 +30,32 @@ FAN_MODES = ["low", "med", "high", "auto"]
 _LOGGER = logging.getLogger(__name__)
 
 
-def _build_entity(coordinator, unit_id, unit, supported_modes, info):
-    _LOGGER.debug("Found device %s", unit_id)
-    return CoolmasterClimate(coordinator, unit_id, unit, supported_modes, info)
-
-
 async def async_setup_entry(
     hass: HomeAssistant,
     config_entry: ConfigEntry,
-    async_add_devices: AddEntitiesCallback,
+    async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up the CoolMasterNet climate platform."""
-    supported_modes = config_entry.data.get(CONF_SUPPORTED_MODES)
     info = hass.data[DOMAIN][config_entry.entry_id][DATA_INFO]
-
     coordinator = hass.data[DOMAIN][config_entry.entry_id][DATA_COORDINATOR]
-
-    all_devices = [
-        _build_entity(coordinator, unit_id, unit, supported_modes, info)
-        for (unit_id, unit) in coordinator.data.items()
-    ]
-
-    async_add_devices(all_devices)
+    supported_modes = config_entry.data.get(CONF_SUPPORTED_MODES)
+    async_add_entities(
+        CoolmasterClimate(coordinator, unit_id, info, supported_modes)
+        for unit_id in coordinator.data
+    )
 
 
-class CoolmasterClimate(CoordinatorEntity, ClimateEntity):
+class CoolmasterClimate(CoolmasterEntity, ClimateEntity):
     """Representation of a coolmaster climate device."""
 
     _attr_supported_features = (
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.FAN_MODE
     )
 
-    def __init__(self, coordinator, unit_id, unit, supported_modes, info):
+    def __init__(self, coordinator, unit_id, info, supported_modes):
         """Initialize the climate device."""
-        super().__init__(coordinator)
-        self._unit_id = unit_id
-        self._unit = unit
+        super().__init__(coordinator, unit_id, info)
         self._hvac_modes = supported_modes
-        self._info = info
-
-    @callback
-    def _handle_coordinator_update(self):
-        self._unit = self.coordinator.data[self._unit_id]
-        super()._handle_coordinator_update()
-
-    @property
-    def device_info(self) -> DeviceInfo:
-        """Return device info for this device."""
-        return DeviceInfo(
-            identifiers={(DOMAIN, self.unique_id)},
-            manufacturer="CoolAutomation",
-            model="CoolMasterNet",
-            name=self.name,
-            sw_version=self._info["version"],
-        )
 
     @property
     def unique_id(self):
diff --git a/homeassistant/components/coolmaster/entity.py b/homeassistant/components/coolmaster/entity.py
new file mode 100644
index 00000000000..65f21b77534
--- /dev/null
+++ b/homeassistant/components/coolmaster/entity.py
@@ -0,0 +1,38 @@
+"""Base entity for Coolmaster integration."""
+from pycoolmasternet_async.coolmasternet import CoolMasterNetUnit
+
+from homeassistant.core import callback
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from . import CoolmasterDataUpdateCoordinator
+from .const import DOMAIN
+
+
+class CoolmasterEntity(CoordinatorEntity[CoolmasterDataUpdateCoordinator]):
+    """Representation of a Coolmaster entity."""
+
+    def __init__(
+        self,
+        coordinator: CoolmasterDataUpdateCoordinator,
+        unit_id: str,
+        info: dict[str, str],
+    ) -> None:
+        """Initiate CoolmasterEntity."""
+        super().__init__(coordinator)
+        self._unit_id: str = unit_id
+        self._unit: CoolMasterNetUnit = coordinator.data[self._unit_id]
+        self._attr_device_info: DeviceInfo = DeviceInfo(
+            identifiers={(DOMAIN, unit_id)},
+            manufacturer="CoolAutomation",
+            model="CoolMasterNet",
+            name=unit_id,
+            sw_version=info["version"],
+        )
+        if hasattr(self, "entity_description"):
+            self._attr_unique_id: str = f"{unit_id}-{self.entity_description.key}"
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        self._unit = self.coordinator.data[self._unit_id]
+        super()._handle_coordinator_update()
diff --git a/homeassistant/components/coolmaster/manifest.json b/homeassistant/components/coolmaster/manifest.json
index a56a97f272e..8980850ca49 100644
--- a/homeassistant/components/coolmaster/manifest.json
+++ b/homeassistant/components/coolmaster/manifest.json
@@ -3,7 +3,7 @@
   "name": "CoolMasterNet",
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/coolmaster",
-  "requirements": ["pycoolmasternet-async==0.1.2"],
+  "requirements": ["pycoolmasternet-async==0.1.5"],
   "codeowners": ["@OnFreund"],
   "iot_class": "local_polling",
   "loggers": ["pycoolmasternet_async"]
diff --git a/homeassistant/components/coolmaster/sensor.py b/homeassistant/components/coolmaster/sensor.py
new file mode 100644
index 00000000000..ef550360f84
--- /dev/null
+++ b/homeassistant/components/coolmaster/sensor.py
@@ -0,0 +1,42 @@
+"""Sensor platform for CoolMasterNet integration."""
+from __future__ import annotations
+
+from homeassistant.components.sensor import SensorEntity, SensorEntityDescription
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import DATA_COORDINATOR, DATA_INFO, DOMAIN
+from .entity import CoolmasterEntity
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the CoolMasterNet sensor platform."""
+    info = hass.data[DOMAIN][config_entry.entry_id][DATA_INFO]
+    coordinator = hass.data[DOMAIN][config_entry.entry_id][DATA_COORDINATOR]
+    async_add_entities(
+        CoolmasterCleanFilter(coordinator, unit_id, info)
+        for unit_id in coordinator.data
+    )
+
+
+class CoolmasterCleanFilter(CoolmasterEntity, SensorEntity):
+    """Representation of a unit's error code."""
+
+    _attr_has_entity_name = True
+    entity_description = SensorEntityDescription(
+        key="error_code",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        name="Error code",
+        icon="mdi:alert",
+    )
+
+    @property
+    def native_value(self) -> str:
+        """Return the error code or OK."""
+        return self._unit.error_code or "OK"
diff --git a/requirements_all.txt b/requirements_all.txt
index 89d28bcdb7a..164c7e0ffed 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1527,7 +1527,7 @@ pycocotools==2.0.1
 pycomfoconnect==0.5.1
 
 # homeassistant.components.coolmaster
-pycoolmasternet-async==0.1.2
+pycoolmasternet-async==0.1.5
 
 # homeassistant.components.microsoft
 pycsspeechtts==1.0.8
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index fca85c2c78f..719ad0921c0 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1091,7 +1091,7 @@ pychromecast==13.0.4
 pycomfoconnect==0.5.1
 
 # homeassistant.components.coolmaster
-pycoolmasternet-async==0.1.2
+pycoolmasternet-async==0.1.5
 
 # homeassistant.components.daikin
 pydaikin==2.8.0
diff --git a/tests/components/coolmaster/conftest.py b/tests/components/coolmaster/conftest.py
new file mode 100644
index 00000000000..c46a33aaa97
--- /dev/null
+++ b/tests/components/coolmaster/conftest.py
@@ -0,0 +1,98 @@
+"""Fixtures for the Coolmaster integration."""
+from __future__ import annotations
+
+import copy
+from typing import Any
+from unittest.mock import patch
+
+import pytest
+
+from homeassistant.components.coolmaster.const import DOMAIN
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+DEFAULT_INFO: dict[str, str] = {
+    "version": "1",
+}
+
+DEFUALT_UNIT_DATA: dict[str, Any] = {
+    "is_on": False,
+    "thermostat": 20,
+    "temperature": 25,
+    "fan_speed": "low",
+    "mode": "cool",
+    "error_code": None,
+    "clean_filter": False,
+    "swing": None,
+    "temperature_unit": "celsius",
+}
+
+TEST_UNITS: dict[dict[str, Any]] = {
+    "L1.100": {**DEFUALT_UNIT_DATA},
+    "L1.101": {
+        **DEFUALT_UNIT_DATA,
+        **{
+            "is_on": True,
+            "clean_filter": True,
+            "error_code": "Err1",
+        },
+    },
+}
+
+
+class CoolMasterNetUnitMock:
+    """Mock for CoolMasterNetUnit."""
+
+    def __init__(self, unit_id: str, attributes: dict[str, Any]) -> None:
+        """Initialize the CoolMasterNetUnitMock."""
+        self.unit_id = unit_id
+        self._attributes = attributes
+        for key, value in attributes.items():
+            setattr(self, key, value)
+
+    async def reset_filter(self):
+        """Report that the air filter was cleaned and reset the timer."""
+        self._attributes["clean_filter"] = False
+
+
+class CoolMasterNetMock:
+    """Mock for CoolMasterNet."""
+
+    def __init__(self, *_args: Any) -> None:
+        """Initialize the CoolMasterNetMock."""
+        self._data = copy.deepcopy(TEST_UNITS)
+
+    async def info(self) -> dict[str, Any]:
+        """Return info about the bridge device."""
+        return DEFAULT_INFO
+
+    async def status(self) -> dict[str, CoolMasterNetUnitMock]:
+        """Return the units."""
+        return {
+            key: CoolMasterNetUnitMock(key, attributes)
+            for key, attributes in self._data.items()
+        }
+
+
+@pytest.fixture
+async def load_int(hass: HomeAssistant) -> MockConfigEntry:
+    """Set up the Coolmaster integration in Home Assistant."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "host": "1.2.3.4",
+            "port": 1234,
+        },
+    )
+
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.coolmaster.CoolMasterNet",
+        new=CoolMasterNetMock,
+    ):
+        await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    return config_entry
diff --git a/tests/components/coolmaster/test_binary_sensor.py b/tests/components/coolmaster/test_binary_sensor.py
new file mode 100644
index 00000000000..2f5c8c5f1be
--- /dev/null
+++ b/tests/components/coolmaster/test_binary_sensor.py
@@ -0,0 +1,14 @@
+"""The test for the Coolmaster binary sensor platform."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+
+async def test_binary_sensor(
+    hass: HomeAssistant,
+    load_int: ConfigEntry,
+) -> None:
+    """Test the Coolmaster binary sensor."""
+    assert hass.states.get("binary_sensor.l1_100_clean_filter").state == "off"
+    assert hass.states.get("binary_sensor.l1_101_clean_filter").state == "on"
diff --git a/tests/components/coolmaster/test_button.py b/tests/components/coolmaster/test_button.py
new file mode 100644
index 00000000000..67461f63087
--- /dev/null
+++ b/tests/components/coolmaster/test_button.py
@@ -0,0 +1,29 @@
+"""The test for the Coolmaster button platform."""
+from __future__ import annotations
+
+from homeassistant.components.button import DOMAIN as BUTTON_DOMAIN, SERVICE_PRESS
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.core import HomeAssistant
+
+
+async def test_button(
+    hass: HomeAssistant,
+    load_int: ConfigEntry,
+) -> None:
+    """Test the Coolmaster button."""
+    assert hass.states.get("binary_sensor.l1_101_clean_filter").state == "on"
+
+    button = hass.states.get("button.l1_101_reset_filter")
+    assert button is not None
+    await hass.services.async_call(
+        BUTTON_DOMAIN,
+        SERVICE_PRESS,
+        {
+            ATTR_ENTITY_ID: button.entity_id,
+        },
+        blocking=True,
+    )
+    await hass.async_block_till_done()
+
+    assert hass.states.get("binary_sensor.l1_101_clean_filter").state == "off"
diff --git a/tests/components/coolmaster/test_sensor.py b/tests/components/coolmaster/test_sensor.py
new file mode 100644
index 00000000000..3072106ec62
--- /dev/null
+++ b/tests/components/coolmaster/test_sensor.py
@@ -0,0 +1,14 @@
+"""The test for the Coolmaster sensor platform."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+
+async def test_sensor(
+    hass: HomeAssistant,
+    load_int: ConfigEntry,
+) -> None:
+    """Test the Coolmaster sensor."""
+    assert hass.states.get("sensor.l1_100_error_code").state == "OK"
+    assert hass.states.get("sensor.l1_101_error_code").state == "Err1"