diff --git a/.coveragerc b/.coveragerc
index 7ce0e5ee299246..86e400aab10d7e 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -93,6 +93,9 @@ omit =
     homeassistant/components/azure_devops/const.py
     homeassistant/components/azure_devops/sensor.py
     homeassistant/components/azure_service_bus/*
+    homeassistant/components/baf/__init__.py
+    homeassistant/components/baf/entity.py
+    homeassistant/components/baf/fan.py
     homeassistant/components/baidu/tts.py
     homeassistant/components/balboa/__init__.py
     homeassistant/components/beewi_smartclim/sensor.py
diff --git a/.strict-typing b/.strict-typing
index 8c580dfa1aa3d3..36ed1685e9fef8 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -55,6 +55,7 @@ homeassistant.components.aseko_pool_live.*
 homeassistant.components.asuswrt.*
 homeassistant.components.automation.*
 homeassistant.components.backup.*
+homeassistant.components.baf.*
 homeassistant.components.binary_sensor.*
 homeassistant.components.bluetooth_tracker.*
 homeassistant.components.bmw_connected_drive.*
diff --git a/CODEOWNERS b/CODEOWNERS
index d07ce028ba93ab..7d8848c76ed32d 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -120,6 +120,8 @@ build.json @home-assistant/supervisor
 /homeassistant/components/azure_service_bus/ @hfurubotten
 /homeassistant/components/backup/ @home-assistant/core
 /tests/components/backup/ @home-assistant/core
+/homeassistant/components/baf/ @bdraco @jfroy
+/tests/components/baf/ @bdraco @jfroy
 /homeassistant/components/balboa/ @garbled1
 /tests/components/balboa/ @garbled1
 /homeassistant/components/beewi_smartclim/ @alemuro
diff --git a/homeassistant/components/baf/__init__.py b/homeassistant/components/baf/__init__.py
new file mode 100644
index 00000000000000..4327eb9ddb973c
--- /dev/null
+++ b/homeassistant/components/baf/__init__.py
@@ -0,0 +1,46 @@
+"""The Big Ass Fans integration."""
+from __future__ import annotations
+
+import asyncio
+
+from aiobafi6 import Device, Service
+from aiobafi6.discovery import PORT
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_IP_ADDRESS, Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ConfigEntryNotReady
+
+from .const import DOMAIN, QUERY_INTERVAL, RUN_TIMEOUT
+from .models import BAFData
+
+PLATFORMS: list[Platform] = [Platform.FAN]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Set up Big Ass Fans from a config entry."""
+    ip_address = entry.data[CONF_IP_ADDRESS]
+
+    service = Service(ip_addresses=[ip_address], uuid=entry.unique_id, port=PORT)
+    device = Device(service, query_interval_seconds=QUERY_INTERVAL)
+    run_future = device.async_run()
+
+    try:
+        await asyncio.wait_for(device.async_wait_available(), timeout=RUN_TIMEOUT)
+    except asyncio.TimeoutError as ex:
+        run_future.cancel()
+        raise ConfigEntryNotReady(f"Timed out connecting to {ip_address}") from ex
+
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = BAFData(device, run_future)
+    hass.config_entries.async_setup_platforms(entry, PLATFORMS)
+
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Unload a config entry."""
+    if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
+        data: BAFData = hass.data[DOMAIN].pop(entry.entry_id)
+        data.run_future.cancel()
+
+    return unload_ok
diff --git a/homeassistant/components/baf/config_flow.py b/homeassistant/components/baf/config_flow.py
new file mode 100644
index 00000000000000..1c2873eb759110
--- /dev/null
+++ b/homeassistant/components/baf/config_flow.py
@@ -0,0 +1,120 @@
+"""Config flow for baf."""
+from __future__ import annotations
+
+import asyncio
+import logging
+from typing import Any
+
+from aiobafi6 import Device, Service
+from aiobafi6.discovery import PORT
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.components import zeroconf
+from homeassistant.const import CONF_IP_ADDRESS
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.util.network import is_ipv6_address
+
+from .const import DOMAIN, RUN_TIMEOUT
+from .models import BAFDiscovery
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_try_connect(ip_address: str) -> Device:
+    """Validate we can connect to a device."""
+    device = Device(Service(ip_addresses=[ip_address], port=PORT))
+    run_future = device.async_run()
+    try:
+        await asyncio.wait_for(device.async_wait_available(), timeout=RUN_TIMEOUT)
+    except asyncio.TimeoutError as ex:
+        raise CannotConnect from ex
+    finally:
+        run_future.cancel()
+    return device
+
+
+class BAFFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle BAF discovery config flow."""
+
+    VERSION = 1
+
+    def __init__(self) -> None:
+        """Initialize the BAF config flow."""
+        self.discovery: BAFDiscovery | None = None
+
+    async def async_step_zeroconf(
+        self, discovery_info: zeroconf.ZeroconfServiceInfo
+    ) -> FlowResult:
+        """Handle zeroconf discovery."""
+        properties = discovery_info.properties
+        ip_address = discovery_info.host
+        if is_ipv6_address(ip_address):
+            return self.async_abort(reason="ipv6_not_supported")
+        uuid = properties["uuid"]
+        model = properties["model"]
+        name = properties["name"]
+        await self.async_set_unique_id(uuid, raise_on_progress=False)
+        self._abort_if_unique_id_configured(updates={CONF_IP_ADDRESS: ip_address})
+        self.discovery = BAFDiscovery(ip_address, name, uuid, model)
+        return await self.async_step_discovery_confirm()
+
+    async def async_step_discovery_confirm(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Confirm discovery."""
+        assert self.discovery is not None
+        discovery = self.discovery
+        if user_input is not None:
+            return self.async_create_entry(
+                title=discovery.name,
+                data={CONF_IP_ADDRESS: discovery.ip_address},
+            )
+        placeholders = {
+            "name": discovery.name,
+            "model": discovery.model,
+            "ip_address": discovery.ip_address,
+        }
+        self.context["title_placeholders"] = placeholders
+        self._set_confirm_only()
+        return self.async_show_form(
+            step_id="discovery_confirm", description_placeholders=placeholders
+        )
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step."""
+        errors = {}
+        ip_address = (user_input or {}).get(CONF_IP_ADDRESS, "")
+        if user_input is not None:
+            try:
+                device = await async_try_connect(ip_address)
+            except CannotConnect:
+                errors[CONF_IP_ADDRESS] = "cannot_connect"
+            except Exception:  # pylint: disable=broad-except
+                _LOGGER.exception(
+                    "Unknown exception during connection test to %s", ip_address
+                )
+                errors["base"] = "unknown"
+            else:
+                await self.async_set_unique_id(device.dns_sd_uuid)
+                self._abort_if_unique_id_configured(
+                    updates={CONF_IP_ADDRESS: ip_address}
+                )
+                return self.async_create_entry(
+                    title=device.name,
+                    data={CONF_IP_ADDRESS: ip_address},
+                )
+
+        return self.async_show_form(
+            step_id="user",
+            data_schema=vol.Schema(
+                {vol.Required(CONF_IP_ADDRESS, default=ip_address): str}
+            ),
+            errors=errors,
+        )
+
+
+class CannotConnect(Exception):
+    """Exception to raise when we cannot connect."""
diff --git a/homeassistant/components/baf/const.py b/homeassistant/components/baf/const.py
new file mode 100644
index 00000000000000..9876d7ffec3c17
--- /dev/null
+++ b/homeassistant/components/baf/const.py
@@ -0,0 +1,19 @@
+"""Constants for the Big Ass Fans integration."""
+
+DOMAIN = "baf"
+
+# Most properties are pushed, only the
+# query every 5 minutes so we keep the RPM
+# sensors up to date
+QUERY_INTERVAL = 300
+
+RUN_TIMEOUT = 20
+
+PRESET_MODE_AUTO = "Auto"
+
+SPEED_COUNT = 7
+SPEED_RANGE = (1, SPEED_COUNT)
+
+ONE_MIN_SECS = 60
+ONE_DAY_SECS = 86400
+HALF_DAY_SECS = 43200
diff --git a/homeassistant/components/baf/entity.py b/homeassistant/components/baf/entity.py
new file mode 100644
index 00000000000000..22054d0b16d01a
--- /dev/null
+++ b/homeassistant/components/baf/entity.py
@@ -0,0 +1,48 @@
+"""The baf integration entities."""
+from __future__ import annotations
+
+from aiobafi6 import Device
+
+from homeassistant.core import callback
+from homeassistant.helpers import device_registry as dr
+from homeassistant.helpers.device_registry import format_mac
+from homeassistant.helpers.entity import DeviceInfo, Entity
+
+
+class BAFEntity(Entity):
+    """Base class for baf entities."""
+
+    _attr_should_poll = False
+
+    def __init__(self, device: Device, name: str) -> None:
+        """Initialize the entity."""
+        self._device = device
+        self._attr_unique_id = format_mac(self._device.mac_address)
+        self._attr_name = name
+        self._attr_device_info = DeviceInfo(
+            connections={(dr.CONNECTION_NETWORK_MAC, self._device.mac_address)},
+            name=self._device.name,
+            manufacturer="Big Ass Fans",
+            model=self._device.model,
+            sw_version=self._device.firmware_version,
+        )
+        self._async_update_attrs()
+
+    @callback
+    def _async_update_attrs(self) -> None:
+        """Update attrs from device."""
+        self._attr_available = self._device.available
+
+    @callback
+    def _async_update_from_device(self, device: Device) -> None:
+        """Process an update from the device."""
+        self._async_update_attrs()
+        self.async_write_ha_state()
+
+    async def async_added_to_hass(self) -> None:
+        """Add data updated listener after this object has been initialized."""
+        self._device.add_callback(self._async_update_from_device)
+
+    async def async_will_remove_from_hass(self) -> None:
+        """Remove data updated listener after this object has been initialized."""
+        self._device.remove_callback(self._async_update_from_device)
diff --git a/homeassistant/components/baf/fan.py b/homeassistant/components/baf/fan.py
new file mode 100644
index 00000000000000..360926363a57b6
--- /dev/null
+++ b/homeassistant/components/baf/fan.py
@@ -0,0 +1,97 @@
+"""Support for Big Ass Fans fan."""
+from __future__ import annotations
+
+import math
+from typing import Any
+
+from aiobafi6 import OffOnAuto
+
+from homeassistant import config_entries
+from homeassistant.components.fan import (
+    DIRECTION_FORWARD,
+    DIRECTION_REVERSE,
+    FanEntity,
+    FanEntityFeature,
+)
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.util.percentage import (
+    percentage_to_ranged_value,
+    ranged_value_to_percentage,
+)
+
+from .const import DOMAIN, PRESET_MODE_AUTO, SPEED_COUNT, SPEED_RANGE
+from .entity import BAFEntity
+from .models import BAFData
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: config_entries.ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up SenseME fans."""
+    data: BAFData = hass.data[DOMAIN][entry.entry_id]
+    if data.device.has_fan:
+        async_add_entities([BAFFan(data.device, data.device.name)])
+
+
+class BAFFan(BAFEntity, FanEntity):
+    """BAF ceiling fan component."""
+
+    _attr_supported_features = FanEntityFeature.SET_SPEED | FanEntityFeature.DIRECTION
+    _attr_preset_modes = [PRESET_MODE_AUTO]
+    _attr_speed_count = SPEED_COUNT
+
+    @callback
+    def _async_update_attrs(self) -> None:
+        """Update attrs from device."""
+        self._attr_is_on = self._device.fan_mode == OffOnAuto.ON
+        self._attr_current_direction = DIRECTION_FORWARD
+        if self._device.reverse_enable:
+            self._attr_current_direction = DIRECTION_REVERSE
+        if self._device.speed is not None:
+            self._attr_percentage = ranged_value_to_percentage(
+                SPEED_RANGE, self._device.speed
+            )
+        else:
+            self._attr_percentage = None
+        auto = self._device.fan_mode == OffOnAuto.AUTO
+        self._attr_preset_mode = PRESET_MODE_AUTO if auto else None
+        super()._async_update_attrs()
+
+    async def async_set_percentage(self, percentage: int) -> None:
+        """Set the speed of the fan, as a percentage."""
+        device = self._device
+        if device.fan_mode != OffOnAuto.ON:
+            device.fan_mode = OffOnAuto.ON
+        device.speed = math.ceil(percentage_to_ranged_value(SPEED_RANGE, percentage))
+
+    async def async_turn_on(
+        self,
+        percentage: int | None = None,
+        preset_mode: str | None = None,
+        **kwargs: Any,
+    ) -> None:
+        """Turn the fan on with a percentage or preset mode."""
+        if preset_mode is not None:
+            await self.async_set_preset_mode(preset_mode)
+            return
+        if percentage is None:
+            self._device.fan_mode = OffOnAuto.ON
+            return
+        await self.async_set_percentage(percentage)
+
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Turn the fan off."""
+        self._device.fan_mode = OffOnAuto.OFF
+
+    async def async_set_preset_mode(self, preset_mode: str) -> None:
+        """Set the preset mode of the fan."""
+        if preset_mode != PRESET_MODE_AUTO:
+            raise ValueError(f"Invalid preset mode: {preset_mode}")
+        self._device.fan_mode = OffOnAuto.AUTO
+
+    async def async_set_direction(self, direction: str) -> None:
+        """Set the direction of the fan."""
+        self._device.reverse_enable = direction == DIRECTION_REVERSE
diff --git a/homeassistant/components/baf/manifest.json b/homeassistant/components/baf/manifest.json
new file mode 100644
index 00000000000000..9dfc35685e324a
--- /dev/null
+++ b/homeassistant/components/baf/manifest.json
@@ -0,0 +1,13 @@
+{
+  "domain": "baf",
+  "name": "Big Ass Fans",
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/baf",
+  "requirements": ["aiobafi6==0.3.0"],
+  "codeowners": ["@bdraco", "@jfroy"],
+  "iot_class": "local_push",
+  "zeroconf": [
+    { "type": "_api._tcp.local.", "properties": { "model": "haiku*" } },
+    { "type": "_api._tcp.local.", "properties": { "model": "i6*" } }
+  ]
+}
diff --git a/homeassistant/components/baf/models.py b/homeassistant/components/baf/models.py
new file mode 100644
index 00000000000000..de5c4a3498b576
--- /dev/null
+++ b/homeassistant/components/baf/models.py
@@ -0,0 +1,25 @@
+"""The baf integration models."""
+from __future__ import annotations
+
+import asyncio
+from dataclasses import dataclass
+
+from aiobafi6 import Device
+
+
+@dataclass
+class BAFData:
+    """Data for the baf integration."""
+
+    device: Device
+    run_future: asyncio.Future
+
+
+@dataclass
+class BAFDiscovery:
+    """A BAF Discovery."""
+
+    ip_address: str
+    name: str
+    uuid: str
+    model: str
diff --git a/homeassistant/components/baf/strings.json b/homeassistant/components/baf/strings.json
new file mode 100644
index 00000000000000..a26e3152326050
--- /dev/null
+++ b/homeassistant/components/baf/strings.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "flow_title": "{name} - {model} ({ip_address})",
+    "step": {
+      "user": {
+        "data": {
+          "ip_address": "[%key:common::config_flow::data::ip%]"
+        }
+      },
+      "discovery_confirm": {
+        "description": "Do you want to setup {name} - {model} ({ip_address})?"
+      }
+    },
+    "abort": {
+      "ipv6_not_supported": "IPv6 is not supported.",
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+    },
+    "error": {
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "unknown": "[%key:common::config_flow::error::unknown%]"
+    }
+  }
+}
diff --git a/homeassistant/components/baf/translations/en.json b/homeassistant/components/baf/translations/en.json
new file mode 100644
index 00000000000000..4bb7256a69260f
--- /dev/null
+++ b/homeassistant/components/baf/translations/en.json
@@ -0,0 +1,23 @@
+{
+    "config": {
+        "abort": {
+            "already_configured": "Device is already configured",
+            "ipv6_not_supported": "IPv6 is not supported."
+        },
+        "error": {
+            "cannot_connect": "Failed to connect",
+            "unknown": "Unexpected error"
+        },
+        "flow_title": "{name} - {model} ({ip_address})",
+        "step": {
+            "discovery_confirm": {
+                "description": "Do you want to setup {name} - {model} ({ip_address})?"
+            },
+            "user": {
+                "data": {
+                    "ip_address": "IP Address"
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index ae2ab6339aa0d2..fc96f60af49606 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -42,6 +42,7 @@
         "axis",
         "azure_devops",
         "azure_event_hub",
+        "baf",
         "balboa",
         "blebox",
         "blink",
diff --git a/homeassistant/generated/zeroconf.py b/homeassistant/generated/zeroconf.py
index d1a15356ddc2e6..415e2746c6d515 100644
--- a/homeassistant/generated/zeroconf.py
+++ b/homeassistant/generated/zeroconf.py
@@ -42,6 +42,20 @@
             "domain": "apple_tv"
         }
     ],
+    "_api._tcp.local.": [
+        {
+            "domain": "baf",
+            "properties": {
+                "model": "haiku*"
+            }
+        },
+        {
+            "domain": "baf",
+            "properties": {
+                "model": "i6*"
+            }
+        }
+    ],
     "_api._udp.local.": [
         {
             "domain": "guardian"
diff --git a/mypy.ini b/mypy.ini
index 532c45263729ba..7784acd9fe61bd 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -368,6 +368,17 @@ no_implicit_optional = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.baf.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+no_implicit_optional = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.binary_sensor.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true
diff --git a/requirements_all.txt b/requirements_all.txt
index 2e8c89e5797ce8..9b1da955d18a22 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -121,6 +121,9 @@ aioasuswrt==1.4.0
 # homeassistant.components.azure_devops
 aioazuredevops==1.3.5
 
+# homeassistant.components.baf
+aiobafi6==0.3.0
+
 # homeassistant.components.aws
 aiobotocore==2.1.0
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 30510f0891064e..d5bde5d8337b12 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -108,6 +108,9 @@ aioasuswrt==1.4.0
 # homeassistant.components.azure_devops
 aioazuredevops==1.3.5
 
+# homeassistant.components.baf
+aiobafi6==0.3.0
+
 # homeassistant.components.aws
 aiobotocore==2.1.0
 
diff --git a/tests/components/baf/__init__.py b/tests/components/baf/__init__.py
new file mode 100644
index 00000000000000..e0432ed643a0fc
--- /dev/null
+++ b/tests/components/baf/__init__.py
@@ -0,0 +1 @@
+"""Tests for the Big Ass Fans integration."""
diff --git a/tests/components/baf/test_config_flow.py b/tests/components/baf/test_config_flow.py
new file mode 100644
index 00000000000000..687a871ed4c681
--- /dev/null
+++ b/tests/components/baf/test_config_flow.py
@@ -0,0 +1,158 @@
+"""Test the baf config flow."""
+import asyncio
+from unittest.mock import patch
+
+from homeassistant import config_entries
+from homeassistant.components import zeroconf
+from homeassistant.components.baf.const import DOMAIN
+from homeassistant.const import CONF_IP_ADDRESS
+from homeassistant.data_entry_flow import (
+    RESULT_TYPE_ABORT,
+    RESULT_TYPE_CREATE_ENTRY,
+    RESULT_TYPE_FORM,
+)
+
+from tests.common import MockConfigEntry
+
+
+async def test_form_user(hass):
+    """Test we get the user form."""
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == "form"
+    assert result["errors"] == {}
+
+    with patch("homeassistant.components.baf.config_flow.Device.async_run",), patch(
+        "homeassistant.components.baf.config_flow.Device.async_wait_available",
+    ), patch(
+        "homeassistant.components.baf.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_IP_ADDRESS: "127.0.0.1"},
+        )
+        await hass.async_block_till_done()
+
+    assert result2["type"] == RESULT_TYPE_CREATE_ENTRY
+    assert result2["title"] == "127.0.0.1"
+    assert result2["data"] == {CONF_IP_ADDRESS: "127.0.0.1"}
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_cannot_connect(hass):
+    """Test we handle cannot connect error."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("homeassistant.components.baf.config_flow.Device.async_run",), patch(
+        "homeassistant.components.baf.config_flow.Device.async_wait_available",
+        side_effect=asyncio.TimeoutError,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_IP_ADDRESS: "127.0.0.1"},
+        )
+
+    assert result2["type"] == RESULT_TYPE_FORM
+    assert result2["errors"] == {CONF_IP_ADDRESS: "cannot_connect"}
+
+
+async def test_form_unknown_exception(hass):
+    """Test we handle unknown exceptions."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch("homeassistant.components.baf.config_flow.Device.async_run",), patch(
+        "homeassistant.components.baf.config_flow.Device.async_wait_available",
+        side_effect=Exception,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_IP_ADDRESS: "127.0.0.1"},
+        )
+
+    assert result2["type"] == RESULT_TYPE_FORM
+    assert result2["errors"] == {"base": "unknown"}
+
+
+async def test_zeroconf_discovery(hass):
+    """Test we can setup from zeroconf discovery."""
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_ZEROCONF},
+        data=zeroconf.ZeroconfServiceInfo(
+            host="127.0.0.1",
+            addresses=["127.0.0.1"],
+            hostname="mock_hostname",
+            name="testfan",
+            port=None,
+            properties={"name": "My Fan", "model": "Haiku", "uuid": "1234"},
+            type="mock_type",
+        ),
+    )
+    assert result["type"] == RESULT_TYPE_FORM
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.baf.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {},
+        )
+        await hass.async_block_till_done()
+
+    assert result2["type"] == "create_entry"
+    assert result2["title"] == "My Fan"
+    assert result2["data"] == {CONF_IP_ADDRESS: "127.0.0.1"}
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_zeroconf_updates_existing_ip(hass):
+    """Test we can setup from zeroconf discovery."""
+    entry = MockConfigEntry(
+        domain=DOMAIN, data={CONF_IP_ADDRESS: "127.0.0.2"}, unique_id="1234"
+    )
+    entry.add_to_hass(hass)
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_ZEROCONF},
+        data=zeroconf.ZeroconfServiceInfo(
+            host="127.0.0.1",
+            addresses=["127.0.0.1"],
+            hostname="mock_hostname",
+            name="testfan",
+            port=None,
+            properties={"name": "My Fan", "model": "Haiku", "uuid": "1234"},
+            type="mock_type",
+        ),
+    )
+    assert result["type"] == RESULT_TYPE_ABORT
+    assert result["reason"] == "already_configured"
+    assert entry.data[CONF_IP_ADDRESS] == "127.0.0.1"
+
+
+async def test_zeroconf_rejects_ipv6(hass):
+    """Test zeroconf discovery rejects ipv6."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_ZEROCONF},
+        data=zeroconf.ZeroconfServiceInfo(
+            host="fd00::b27c:63bb:cc85:4ea0",
+            addresses=["fd00::b27c:63bb:cc85:4ea0"],
+            hostname="mock_hostname",
+            name="testfan",
+            port=None,
+            properties={"name": "My Fan", "model": "Haiku", "uuid": "1234"},
+            type="mock_type",
+        ),
+    )
+    assert result["type"] == RESULT_TYPE_ABORT
+    assert result["reason"] == "ipv6_not_supported"