diff --git a/homeassistant/components/flexit_bacnet/__init__.py b/homeassistant/components/flexit_bacnet/__init__.py
index 27800af6626..ba7134d7e50 100644
--- a/homeassistant/components/flexit_bacnet/__init__.py
+++ b/homeassistant/components/flexit_bacnet/__init__.py
@@ -8,7 +8,12 @@ from homeassistant.core import HomeAssistant
 from .const import DOMAIN
 from .coordinator import FlexitCoordinator
 
-PLATFORMS: list[Platform] = [Platform.BINARY_SENSOR, Platform.CLIMATE, Platform.SENSOR]
+PLATFORMS: list[Platform] = [
+    Platform.BINARY_SENSOR,
+    Platform.CLIMATE,
+    Platform.SENSOR,
+    Platform.SWITCH,
+]
 
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
diff --git a/homeassistant/components/flexit_bacnet/strings.json b/homeassistant/components/flexit_bacnet/strings.json
index aeb349dd1d4..d9efd1fc411 100644
--- a/homeassistant/components/flexit_bacnet/strings.json
+++ b/homeassistant/components/flexit_bacnet/strings.json
@@ -68,6 +68,11 @@
       "heat_exchanger_speed": {
         "name": "Heat exchanger speed"
       }
+    },
+    "switch": {
+      "electric_heater": {
+        "name": "Electric heater"
+      }
     }
   }
 }
diff --git a/homeassistant/components/flexit_bacnet/switch.py b/homeassistant/components/flexit_bacnet/switch.py
new file mode 100644
index 00000000000..151bd9d96ec
--- /dev/null
+++ b/homeassistant/components/flexit_bacnet/switch.py
@@ -0,0 +1,96 @@
+"""The Flexit Nordic (BACnet) integration."""
+import asyncio.exceptions
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Any
+
+from flexit_bacnet import FlexitBACnet
+from flexit_bacnet.bacnet import DecodingError
+
+from homeassistant.components.switch import (
+    SwitchDeviceClass,
+    SwitchEntity,
+    SwitchEntityDescription,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import FlexitCoordinator
+from .const import DOMAIN
+from .entity import FlexitEntity
+
+
+@dataclass(kw_only=True, frozen=True)
+class FlexitSwitchEntityDescription(SwitchEntityDescription):
+    """Describes a Flexit switch entity."""
+
+    is_on_fn: Callable[[FlexitBACnet], bool]
+
+
+SWITCHES: tuple[FlexitSwitchEntityDescription, ...] = (
+    FlexitSwitchEntityDescription(
+        key="electric_heater",
+        translation_key="electric_heater",
+        icon="mdi:radiator",
+        is_on_fn=lambda data: data.electric_heater,
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up Flexit (bacnet) switch from a config entry."""
+    coordinator: FlexitCoordinator = hass.data[DOMAIN][config_entry.entry_id]
+
+    async_add_entities(
+        FlexitSwitch(coordinator, description) for description in SWITCHES
+    )
+
+
+class FlexitSwitch(FlexitEntity, SwitchEntity):
+    """Representation of a Flexit Switch."""
+
+    _attr_device_class = SwitchDeviceClass.SWITCH
+
+    entity_description: FlexitSwitchEntityDescription
+
+    def __init__(
+        self,
+        coordinator: FlexitCoordinator,
+        entity_description: FlexitSwitchEntityDescription,
+    ) -> None:
+        """Initialize Flexit (bacnet) switch."""
+        super().__init__(coordinator)
+
+        self.entity_description = entity_description
+        self._attr_unique_id = (
+            f"{coordinator.device.serial_number}-{entity_description.key}"
+        )
+
+    @property
+    def is_on(self) -> bool:
+        """Return value of the switch."""
+        return self.entity_description.is_on_fn(self.coordinator.data)
+
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Turn electric heater on."""
+        try:
+            await self.device.enable_electric_heater()
+        except (asyncio.exceptions.TimeoutError, ConnectionError, DecodingError) as exc:
+            raise HomeAssistantError from exc
+        finally:
+            await self.coordinator.async_refresh()
+
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn electric heater off."""
+        try:
+            await self.device.disable_electric_heater()
+        except (asyncio.exceptions.TimeoutError, ConnectionError, DecodingError) as exc:
+            raise HomeAssistantError from exc
+        finally:
+            await self.coordinator.async_refresh()
diff --git a/tests/components/flexit_bacnet/conftest.py b/tests/components/flexit_bacnet/conftest.py
index f0117b41536..c192489805f 100644
--- a/tests/components/flexit_bacnet/conftest.py
+++ b/tests/components/flexit_bacnet/conftest.py
@@ -60,6 +60,7 @@ def mock_flexit_bacnet() -> Generator[AsyncMock, None, None]:
         flexit_bacnet.heat_exchanger_efficiency = 81
         flexit_bacnet.heat_exchanger_speed = 100
         flexit_bacnet.air_filter_polluted = False
+        flexit_bacnet.electric_heater = True
 
         yield flexit_bacnet
 
diff --git a/tests/components/flexit_bacnet/snapshots/test_switch.ambr b/tests/components/flexit_bacnet/snapshots/test_switch.ambr
new file mode 100644
index 00000000000..4db770917b0
--- /dev/null
+++ b/tests/components/flexit_bacnet/snapshots/test_switch.ambr
@@ -0,0 +1,60 @@
+# serializer version: 1
+# name: test_switches[switch.device_name_electric_heater-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': None,
+    'entity_id': 'switch.device_name_electric_heater',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <SwitchDeviceClass.SWITCH: 'switch'>,
+    'original_icon': 'mdi:radiator',
+    'original_name': 'Electric heater',
+    'platform': 'flexit_bacnet',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': 'electric_heater',
+    'unique_id': '0000-0001-electric_heater',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_switches[switch.device_name_electric_heater-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'switch',
+      'friendly_name': 'Device Name Electric heater',
+      'icon': 'mdi:radiator',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.device_name_electric_heater',
+    'last_changed': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
+# name: test_switches_implementation[switch.device_name_electric_heater-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'switch',
+      'friendly_name': 'Device Name Electric heater',
+      'icon': 'mdi:radiator',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.device_name_electric_heater',
+    'last_changed': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
diff --git a/tests/components/flexit_bacnet/test_switch.py b/tests/components/flexit_bacnet/test_switch.py
new file mode 100644
index 00000000000..7c08fc2a024
--- /dev/null
+++ b/tests/components/flexit_bacnet/test_switch.py
@@ -0,0 +1,135 @@
+"""Tests for the Flexit Nordic (BACnet) switch entities."""
+from unittest.mock import AsyncMock
+
+from flexit_bacnet import DecodingError
+import pytest
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.components.switch import (
+    DOMAIN as SWITCH_DOMAIN,
+    SERVICE_TURN_OFF,
+    SERVICE_TURN_ON,
+)
+from homeassistant.const import ATTR_ENTITY_ID, STATE_OFF, STATE_ON, Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers import entity_registry as er
+
+from tests.common import MockConfigEntry
+from tests.components.flexit_bacnet import setup_with_selected_platforms
+
+ENTITY_ID = "switch.device_name_electric_heater"
+
+
+async def test_switches(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    entity_registry: er.EntityRegistry,
+    mock_flexit_bacnet: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test switch states are correctly collected from library."""
+
+    await setup_with_selected_platforms(hass, mock_config_entry, [Platform.SWITCH])
+    entity_entries = er.async_entries_for_config_entry(
+        entity_registry, mock_config_entry.entry_id
+    )
+
+    assert entity_entries
+    for entity_entry in entity_entries:
+        assert entity_entry == snapshot(name=f"{entity_entry.entity_id}-entry")
+        assert (state := hass.states.get(entity_entry.entity_id))
+        assert state == snapshot(name=f"{entity_entry.entity_id}-state")
+
+
+async def test_switches_implementation(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    entity_registry: er.EntityRegistry,
+    mock_flexit_bacnet: AsyncMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test that the switch can be turned on and off."""
+
+    await setup_with_selected_platforms(hass, mock_config_entry, [Platform.SWITCH])
+    assert hass.states.get(ENTITY_ID) == snapshot(name=f"{ENTITY_ID}-state")
+
+    # Set to off
+    mock_flexit_bacnet.electric_heater = False
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_OFF,
+        {ATTR_ENTITY_ID: ENTITY_ID},
+        blocking=True,
+    )
+
+    mocked_method = getattr(mock_flexit_bacnet, "disable_electric_heater")
+    assert len(mocked_method.mock_calls) == 1
+    assert hass.states.get(ENTITY_ID).state == STATE_OFF
+
+    # Set to on
+    mock_flexit_bacnet.electric_heater = True
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_ON,
+        {ATTR_ENTITY_ID: ENTITY_ID},
+        blocking=True,
+    )
+
+    mocked_method = getattr(mock_flexit_bacnet, "enable_electric_heater")
+    assert len(mocked_method.mock_calls) == 1
+    assert hass.states.get(ENTITY_ID).state == STATE_ON
+
+    # Error recovery, when turning off
+    mock_flexit_bacnet.disable_electric_heater.side_effect = DecodingError
+
+    with pytest.raises(HomeAssistantError):
+        await hass.services.async_call(
+            SWITCH_DOMAIN,
+            SERVICE_TURN_OFF,
+            {ATTR_ENTITY_ID: ENTITY_ID},
+            blocking=True,
+        )
+
+    mocked_method = getattr(mock_flexit_bacnet, "disable_electric_heater")
+    assert len(mocked_method.mock_calls) == 2
+
+    mock_flexit_bacnet.disable_electric_heater.side_effect = None
+    mock_flexit_bacnet.electric_heater = False
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_OFF,
+        {ATTR_ENTITY_ID: ENTITY_ID},
+        blocking=True,
+    )
+
+    assert hass.states.get(ENTITY_ID).state == STATE_OFF
+
+    # Error recovery, when turning on
+    mock_flexit_bacnet.enable_electric_heater.side_effect = DecodingError
+
+    with pytest.raises(HomeAssistantError):
+        await hass.services.async_call(
+            SWITCH_DOMAIN,
+            SERVICE_TURN_ON,
+            {ATTR_ENTITY_ID: ENTITY_ID},
+            blocking=True,
+        )
+
+    mocked_method = getattr(mock_flexit_bacnet, "enable_electric_heater")
+    assert len(mocked_method.mock_calls) == 2
+
+    mock_flexit_bacnet.enable_electric_heater.side_effect = None
+    mock_flexit_bacnet.electric_heater = True
+
+    await hass.services.async_call(
+        SWITCH_DOMAIN,
+        SERVICE_TURN_ON,
+        {ATTR_ENTITY_ID: ENTITY_ID},
+        blocking=True,
+    )
+
+    assert hass.states.get(ENTITY_ID).state == STATE_ON