diff --git a/homeassistant/components/flexit_bacnet/icons.json b/homeassistant/components/flexit_bacnet/icons.json
index 7ce8b116a27..a0c5ccd5a6e 100644
--- a/homeassistant/components/flexit_bacnet/icons.json
+++ b/homeassistant/components/flexit_bacnet/icons.json
@@ -30,6 +30,9 @@
       },
       "home_supply_fan_setpoint": {
         "default": "mdi:fan-plus"
+      },
+      "fireplace_mode_runtime": {
+        "default": "mdi:fireplace"
       }
     },
     "switch": {
@@ -38,6 +41,12 @@
         "state": {
           "off": "mdi:radiator-off"
         }
+      },
+      "fireplace_mode": {
+        "default": "mdi:fireplace",
+        "state": {
+          "off": "mdi:fireplace-off"
+        }
       }
     }
   }
diff --git a/homeassistant/components/flexit_bacnet/number.py b/homeassistant/components/flexit_bacnet/number.py
index 6e405e8e8ac..30df5370868 100644
--- a/homeassistant/components/flexit_bacnet/number.py
+++ b/homeassistant/components/flexit_bacnet/number.py
@@ -14,7 +14,7 @@ from homeassistant.components.number import (
     NumberMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import PERCENTAGE
+from homeassistant.const import PERCENTAGE, UnitOfTime
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -26,6 +26,9 @@ from .entity import FlexitEntity
 _MAX_FAN_SETPOINT = 100
 _MIN_FAN_SETPOINT = 30
 
+_MAX_RUNTIME_DURATION = 360
+_MIN_RUNTIME_DURATION = 1
+
 
 @dataclass(kw_only=True, frozen=True)
 class FlexitNumberEntityDescription(NumberEntityDescription):
@@ -176,6 +179,18 @@ NUMBERS: tuple[FlexitNumberEntityDescription, ...] = (
         native_max_value_fn=lambda _: _MAX_FAN_SETPOINT,
         native_min_value_fn=lambda device: int(device.fan_setpoint_supply_air_away),
     ),
+    FlexitNumberEntityDescription(
+        key="fireplace_mode_runtime",
+        translation_key="fireplace_mode_runtime",
+        device_class=NumberDeviceClass.DURATION,
+        native_step=1,
+        mode=NumberMode.SLIDER,
+        native_value_fn=lambda device: device.fireplace_mode_runtime,
+        set_native_value_fn=lambda device: device.set_fireplace_mode_runtime,
+        native_unit_of_measurement=UnitOfTime.MINUTES,
+        native_max_value_fn=lambda _: _MAX_RUNTIME_DURATION,
+        native_min_value_fn=lambda _: _MIN_RUNTIME_DURATION,
+    ),
 )
 
 
diff --git a/homeassistant/components/flexit_bacnet/strings.json b/homeassistant/components/flexit_bacnet/strings.json
index 7f763674d00..8888b02a3ef 100644
--- a/homeassistant/components/flexit_bacnet/strings.json
+++ b/homeassistant/components/flexit_bacnet/strings.json
@@ -52,6 +52,9 @@
       },
       "home_supply_fan_setpoint": {
         "name": "Home supply fan setpoint"
+      },
+      "fireplace_mode_runtime": {
+        "name": "Fireplace mode runtime"
       }
     },
     "sensor": {
@@ -104,6 +107,9 @@
     "switch": {
       "electric_heater": {
         "name": "Electric heater"
+      },
+      "fireplace_mode": {
+        "name": "Fireplace mode"
       }
     }
   }
diff --git a/homeassistant/components/flexit_bacnet/switch.py b/homeassistant/components/flexit_bacnet/switch.py
index c58e35cda75..7f12a7524b6 100644
--- a/homeassistant/components/flexit_bacnet/switch.py
+++ b/homeassistant/components/flexit_bacnet/switch.py
@@ -40,6 +40,13 @@ SWITCHES: tuple[FlexitSwitchEntityDescription, ...] = (
         turn_on_fn=lambda data: data.enable_electric_heater(),
         turn_off_fn=lambda data: data.disable_electric_heater(),
     ),
+    FlexitSwitchEntityDescription(
+        key="fireplace_mode",
+        translation_key="fireplace_mode",
+        is_on_fn=lambda data: data.fireplace_ventilation_status,
+        turn_on_fn=lambda data: data.trigger_fireplace_mode(),
+        turn_off_fn=lambda data: data.trigger_fireplace_mode(),
+    ),
 )
 
 
diff --git a/tests/components/flexit_bacnet/conftest.py b/tests/components/flexit_bacnet/conftest.py
index 6ce17261bfc..09957fe496f 100644
--- a/tests/components/flexit_bacnet/conftest.py
+++ b/tests/components/flexit_bacnet/conftest.py
@@ -67,6 +67,7 @@ def mock_flexit_bacnet() -> Generator[AsyncMock]:
         flexit_bacnet.air_filter_polluted = False
         flexit_bacnet.air_filter_exchange_interval = 8784
         flexit_bacnet.electric_heater = True
+        flexit_bacnet.fireplace_mode_runtime = 10
 
         # Mock fan setpoints
         flexit_bacnet.fan_setpoint_extract_air_fire = 56
diff --git a/tests/components/flexit_bacnet/snapshots/test_number.ambr b/tests/components/flexit_bacnet/snapshots/test_number.ambr
index 78eefd08345..e2875c140cc 100644
--- a/tests/components/flexit_bacnet/snapshots/test_number.ambr
+++ b/tests/components/flexit_bacnet/snapshots/test_number.ambr
@@ -284,6 +284,63 @@
     'state': '56',
   })
 # ---
+# name: test_numbers[number.device_name_fireplace_mode_runtime-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'max': 360,
+      'min': 1,
+      'mode': <NumberMode.SLIDER: 'slider'>,
+      'step': 1,
+    }),
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'number',
+    'entity_category': None,
+    'entity_id': 'number.device_name_fireplace_mode_runtime',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <NumberDeviceClass.DURATION: 'duration'>,
+    'original_icon': None,
+    'original_name': 'Fireplace mode runtime',
+    'platform': 'flexit_bacnet',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': 'fireplace_mode_runtime',
+    'unique_id': '0000-0001-fireplace_mode_runtime',
+    'unit_of_measurement': <UnitOfTime.MINUTES: 'min'>,
+  })
+# ---
+# name: test_numbers[number.device_name_fireplace_mode_runtime-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'duration',
+      'friendly_name': 'Device Name Fireplace mode runtime',
+      'max': 360,
+      'min': 1,
+      'mode': <NumberMode.SLIDER: 'slider'>,
+      'step': 1,
+      'unit_of_measurement': <UnitOfTime.MINUTES: 'min'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'number.device_name_fireplace_mode_runtime',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '10',
+  })
+# ---
 # name: test_numbers[number.device_name_fireplace_supply_fan_setpoint-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({
diff --git a/tests/components/flexit_bacnet/snapshots/test_switch.ambr b/tests/components/flexit_bacnet/snapshots/test_switch.ambr
index d054608f1f7..1df1c12e791 100644
--- a/tests/components/flexit_bacnet/snapshots/test_switch.ambr
+++ b/tests/components/flexit_bacnet/snapshots/test_switch.ambr
@@ -46,6 +46,53 @@
     'state': 'on',
   })
 # ---
+# name: test_switches[switch.device_name_fireplace_mode-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_fireplace_mode',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': <SwitchDeviceClass.SWITCH: 'switch'>,
+    'original_icon': None,
+    'original_name': 'Fireplace mode',
+    'platform': 'flexit_bacnet',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': 'fireplace_mode',
+    'unique_id': '0000-0001-fireplace_mode',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_switches[switch.device_name_fireplace_mode-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'switch',
+      'friendly_name': 'Device Name Fireplace mode',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.device_name_fireplace_mode',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
 # name: test_switches_implementation[switch.device_name_electric_heater-state]
   StateSnapshot({
     'attributes': ReadOnlyDict({