diff --git a/.strict-typing b/.strict-typing
index b2f27fafbbc..3c18a1988f3 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -202,6 +202,7 @@ homeassistant.components.ld2410_ble.*
 homeassistant.components.lidarr.*
 homeassistant.components.lifx.*
 homeassistant.components.light.*
+homeassistant.components.linear_garage_door.*
 homeassistant.components.litejet.*
 homeassistant.components.litterrobot.*
 homeassistant.components.local_ip.*
diff --git a/CODEOWNERS b/CODEOWNERS
index 358f2725144..fe45e9c2fca 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -700,6 +700,8 @@ build.json @home-assistant/supervisor
 /tests/components/life360/ @pnbruckner
 /homeassistant/components/light/ @home-assistant/core
 /tests/components/light/ @home-assistant/core
+/homeassistant/components/linear_garage_door/ @IceBotYT
+/tests/components/linear_garage_door/ @IceBotYT
 /homeassistant/components/linux_battery/ @fabaff
 /homeassistant/components/litejet/ @joncar
 /tests/components/litejet/ @joncar
diff --git a/homeassistant/components/linear_garage_door/__init__.py b/homeassistant/components/linear_garage_door/__init__.py
new file mode 100644
index 00000000000..d168da511e0
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/__init__.py
@@ -0,0 +1,32 @@
+"""The Linear Garage Door integration."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+from .coordinator import LinearUpdateCoordinator
+
+PLATFORMS: list[Platform] = [Platform.COVER]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Set up Linear Garage Door from a config entry."""
+
+    coordinator = LinearUpdateCoordinator(hass, entry)
+
+    await coordinator.async_config_entry_first_refresh()
+
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
+    await hass.config_entries.async_forward_entry_setups(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):
+        hass.data[DOMAIN].pop(entry.entry_id)
+
+    return unload_ok
diff --git a/homeassistant/components/linear_garage_door/config_flow.py b/homeassistant/components/linear_garage_door/config_flow.py
new file mode 100644
index 00000000000..6bca49adb4c
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/config_flow.py
@@ -0,0 +1,166 @@
+"""Config flow for Linear Garage Door integration."""
+from __future__ import annotations
+
+from collections.abc import Collection, Mapping, Sequence
+import logging
+from typing import Any
+import uuid
+
+from linear_garage_door import Linear
+from linear_garage_door.errors import InvalidLoginError
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.const import CONF_EMAIL, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+
+from .const import DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+STEP_USER_DATA_SCHEMA = {
+    vol.Required(CONF_EMAIL): str,
+    vol.Required(CONF_PASSWORD): str,
+}
+
+
+async def validate_input(
+    hass: HomeAssistant,
+    data: dict[str, str],
+) -> dict[str, Sequence[Collection[str]]]:
+    """Validate the user input allows us to connect.
+
+    Data has the keys from STEP_USER_DATA_SCHEMA with values provided by the user.
+    """
+
+    hub = Linear()
+
+    device_id = str(uuid.uuid4())
+    try:
+        await hub.login(
+            data["email"],
+            data["password"],
+            device_id=device_id,
+            client_session=async_get_clientsession(hass),
+        )
+
+        sites = await hub.get_sites()
+    except InvalidLoginError as err:
+        raise InvalidAuth from err
+    finally:
+        await hub.close()
+
+    info = {
+        "email": data["email"],
+        "password": data["password"],
+        "sites": sites,
+        "device_id": device_id,
+    }
+
+    return info
+
+
+class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Linear Garage Door."""
+
+    VERSION = 1
+
+    def __init__(self) -> None:
+        """Initialize the config flow."""
+        self.data: dict[str, Sequence[Collection[str]]] = {}
+        self._reauth_entry: config_entries.ConfigEntry | None = None
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step."""
+        data_schema = STEP_USER_DATA_SCHEMA
+
+        data_schema = vol.Schema(data_schema)
+
+        if user_input is None:
+            return self.async_show_form(step_id="user", data_schema=data_schema)
+
+        errors = {}
+
+        try:
+            info = await validate_input(self.hass, user_input)
+        except InvalidAuth:
+            errors["base"] = "invalid_auth"
+        except Exception:  # pylint: disable=broad-except
+            _LOGGER.exception("Unexpected exception")
+            errors["base"] = "unknown"
+        else:
+            self.data = info
+
+            # Check if we are reauthenticating
+            if self._reauth_entry is not None:
+                self.hass.config_entries.async_update_entry(
+                    self._reauth_entry,
+                    data=self._reauth_entry.data
+                    | {"email": self.data["email"], "password": self.data["password"]},
+                )
+                await self.hass.config_entries.async_reload(self._reauth_entry.entry_id)
+                return self.async_abort(reason="reauth_successful")
+
+            return await self.async_step_site()
+
+        return self.async_show_form(
+            step_id="user", data_schema=data_schema, errors=errors
+        )
+
+    async def async_step_site(
+        self,
+        user_input: dict[str, Any] | None = None,
+    ) -> FlowResult:
+        """Handle the site step."""
+
+        if isinstance(self.data["sites"], list):
+            sites: list[dict[str, str]] = self.data["sites"]
+
+        if not user_input:
+            return self.async_show_form(
+                step_id="site",
+                data_schema=vol.Schema(
+                    {
+                        vol.Required("site"): vol.In(
+                            {site["id"]: site["name"] for site in sites}
+                        )
+                    }
+                ),
+            )
+
+        site_id = user_input["site"]
+
+        site_name = next(site["name"] for site in sites if site["id"] == site_id)
+
+        await self.async_set_unique_id(site_id)
+        self._abort_if_unique_id_configured()
+
+        return self.async_create_entry(
+            title=site_name,
+            data={
+                "site_id": site_id,
+                "email": self.data["email"],
+                "password": self.data["password"],
+                "device_id": self.data["device_id"],
+            },
+        )
+
+    async def async_step_reauth(self, entry_data: Mapping[str, Any]) -> FlowResult:
+        """Reauth in case of a password change or other error."""
+        self._reauth_entry = self.hass.config_entries.async_get_entry(
+            self.context["entry_id"]
+        )
+        return await self.async_step_user()
+
+
+class InvalidAuth(HomeAssistantError):
+    """Error to indicate there is invalid auth."""
+
+
+class InvalidDeviceID(HomeAssistantError):
+    """Error to indicate there is invalid device ID."""
diff --git a/homeassistant/components/linear_garage_door/const.py b/homeassistant/components/linear_garage_door/const.py
new file mode 100644
index 00000000000..7b3625c7c67
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/const.py
@@ -0,0 +1,3 @@
+"""Constants for the Linear Garage Door integration."""
+
+DOMAIN = "linear_garage_door"
diff --git a/homeassistant/components/linear_garage_door/coordinator.py b/homeassistant/components/linear_garage_door/coordinator.py
new file mode 100644
index 00000000000..5a17d5a39e4
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/coordinator.py
@@ -0,0 +1,81 @@
+"""DataUpdateCoordinator for Linear."""
+from __future__ import annotations
+
+from datetime import timedelta
+import logging
+from typing import Any
+
+from linear_garage_door import Linear
+from linear_garage_door.errors import InvalidLoginError, ResponseError
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
+
+_LOGGER = logging.getLogger(__name__)
+
+
+class LinearUpdateCoordinator(DataUpdateCoordinator[dict[str, Any]]):
+    """DataUpdateCoordinator for Linear."""
+
+    _email: str
+    _password: str
+    _device_id: str
+    _site_id: str
+    _devices: list[dict[str, list[str] | str]] | None
+    _linear: Linear
+
+    def __init__(
+        self,
+        hass: HomeAssistant,
+        entry: ConfigEntry,
+    ) -> None:
+        """Initialize DataUpdateCoordinator for Linear."""
+        self._email = entry.data["email"]
+        self._password = entry.data["password"]
+        self._device_id = entry.data["device_id"]
+        self._site_id = entry.data["site_id"]
+        self._devices = None
+
+        super().__init__(
+            hass,
+            _LOGGER,
+            name="Linear Garage Door",
+            update_interval=timedelta(seconds=60),
+        )
+
+    async def _async_update_data(self) -> dict[str, Any]:
+        """Get the data for Linear."""
+
+        linear = Linear()
+
+        try:
+            await linear.login(
+                email=self._email,
+                password=self._password,
+                device_id=self._device_id,
+            )
+        except InvalidLoginError as err:
+            if (
+                str(err)
+                == "Login error: Login provided is invalid, please check the email and password"
+            ):
+                raise ConfigEntryAuthFailed from err
+            raise ConfigEntryNotReady from err
+        except ResponseError as err:
+            raise ConfigEntryNotReady from err
+
+        if not self._devices:
+            self._devices = await linear.get_devices(self._site_id)
+
+        data = {}
+
+        for device in self._devices:
+            device_id = str(device["id"])
+            state = await linear.get_device_state(device_id)
+            data[device_id] = {"name": device["name"], "subdevices": state}
+
+        await linear.close()
+
+        return data
diff --git a/homeassistant/components/linear_garage_door/cover.py b/homeassistant/components/linear_garage_door/cover.py
new file mode 100644
index 00000000000..3474e9d3acb
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/cover.py
@@ -0,0 +1,149 @@
+"""Cover entity for Linear Garage Doors."""
+
+from datetime import timedelta
+from typing import Any
+
+from linear_garage_door import Linear
+
+from homeassistant.components.cover import (
+    CoverDeviceClass,
+    CoverEntity,
+    CoverEntityFeature,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.device_registry import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN
+from .coordinator import LinearUpdateCoordinator
+
+SUPPORTED_SUBDEVICES = ["GDO"]
+PARALLEL_UPDATES = 1
+SCAN_INTERVAL = timedelta(seconds=10)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up Linear Garage Door cover."""
+    coordinator: LinearUpdateCoordinator = hass.data[DOMAIN][config_entry.entry_id]
+    data = coordinator.data
+
+    device_list: list[LinearCoverEntity] = []
+
+    for device_id in data:
+        device_list.extend(
+            LinearCoverEntity(
+                device_id=device_id,
+                device_name=data[device_id]["name"],
+                subdevice=subdev,
+                config_entry=config_entry,
+                coordinator=coordinator,
+            )
+            for subdev in data[device_id]["subdevices"]
+            if subdev in SUPPORTED_SUBDEVICES
+        )
+    async_add_entities(device_list)
+
+
+class LinearCoverEntity(CoordinatorEntity[LinearUpdateCoordinator], CoverEntity):
+    """Representation of a Linear cover."""
+
+    _attr_supported_features = CoverEntityFeature.OPEN | CoverEntityFeature.CLOSE
+
+    def __init__(
+        self,
+        device_id: str,
+        device_name: str,
+        subdevice: str,
+        config_entry: ConfigEntry,
+        coordinator: LinearUpdateCoordinator,
+    ) -> None:
+        """Init with device ID and name."""
+        super().__init__(coordinator)
+
+        self._attr_has_entity_name = True
+        self._attr_name = None
+        self._device_id = device_id
+        self._device_name = device_name
+        self._subdevice = subdevice
+        self._attr_device_class = CoverDeviceClass.GARAGE
+        self._attr_unique_id = f"{device_id}-{subdevice}"
+        self._config_entry = config_entry
+
+    def _get_data(self, data_property: str) -> str:
+        """Get a property of the subdevice."""
+        return str(
+            self.coordinator.data[self._device_id]["subdevices"][self._subdevice].get(
+                data_property
+            )
+        )
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        """Return device info of a garage door."""
+        return DeviceInfo(
+            identifiers={(DOMAIN, self._device_id)},
+            name=self._device_name,
+            manufacturer="Linear",
+            model="Garage Door Opener",
+        )
+
+    @property
+    def is_closed(self) -> bool:
+        """Return if cover is closed."""
+        return bool(self._get_data("Open_B") == "false")
+
+    @property
+    def is_opened(self) -> bool:
+        """Return if cover is open."""
+        return bool(self._get_data("Open_B") == "true")
+
+    @property
+    def is_opening(self) -> bool:
+        """Return if cover is opening."""
+        return bool(self._get_data("Opening_P") == "0")
+
+    @property
+    def is_closing(self) -> bool:
+        """Return if cover is closing."""
+        return bool(self._get_data("Opening_P") == "100")
+
+    async def async_close_cover(self, **kwargs: Any) -> None:
+        """Close the garage door."""
+        if self.is_closed:
+            return
+
+        linear = Linear()
+
+        await linear.login(
+            email=self._config_entry.data["email"],
+            password=self._config_entry.data["password"],
+            device_id=self._config_entry.data["device_id"],
+            client_session=async_get_clientsession(self.hass),
+        )
+
+        await linear.operate_device(self._device_id, self._subdevice, "Close")
+        await linear.close()
+
+    async def async_open_cover(self, **kwargs: Any) -> None:
+        """Open the garage door."""
+        if self.is_opened:
+            return
+
+        linear = Linear()
+
+        await linear.login(
+            email=self._config_entry.data["email"],
+            password=self._config_entry.data["password"],
+            device_id=self._config_entry.data["device_id"],
+            client_session=async_get_clientsession(self.hass),
+        )
+
+        await linear.operate_device(self._device_id, self._subdevice, "Open")
+        await linear.close()
diff --git a/homeassistant/components/linear_garage_door/diagnostics.py b/homeassistant/components/linear_garage_door/diagnostics.py
new file mode 100644
index 00000000000..fffcdd7de87
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/diagnostics.py
@@ -0,0 +1,26 @@
+"""Diagnostics support for Linear Garage Door."""
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_EMAIL, CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+from .coordinator import LinearUpdateCoordinator
+
+TO_REDACT = {CONF_PASSWORD, CONF_EMAIL}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    coordinator: LinearUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+
+    return {
+        "entry": async_redact_data(entry.as_dict(), TO_REDACT),
+        "coordinator_data": coordinator.data,
+    }
diff --git a/homeassistant/components/linear_garage_door/manifest.json b/homeassistant/components/linear_garage_door/manifest.json
new file mode 100644
index 00000000000..c7918e21e20
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/manifest.json
@@ -0,0 +1,9 @@
+{
+  "domain": "linear_garage_door",
+  "name": "Linear Garage Door",
+  "codeowners": ["@IceBotYT"],
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/linear_garage_door",
+  "iot_class": "cloud_polling",
+  "requirements": ["linear-garage-door==0.2.7"]
+}
diff --git a/homeassistant/components/linear_garage_door/strings.json b/homeassistant/components/linear_garage_door/strings.json
new file mode 100644
index 00000000000..93dd17c5bce
--- /dev/null
+++ b/homeassistant/components/linear_garage_door/strings.json
@@ -0,0 +1,20 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "data": {
+          "email": "[%key:common::config_flow::data::email%]",
+          "password": "[%key:common::config_flow::data::password%]"
+        }
+      }
+    },
+    "error": {
+      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
+      "unknown": "[%key:common::config_flow::error::unknown%]"
+    },
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]"
+    }
+  }
+}
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index d5a5176a974..3bbed6d145b 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -262,6 +262,7 @@ FLOWS = {
         "lidarr",
         "life360",
         "lifx",
+        "linear_garage_door",
         "litejet",
         "litterrobot",
         "livisi",
diff --git a/homeassistant/generated/integrations.json b/homeassistant/generated/integrations.json
index ec35b83b630..d3685e45432 100644
--- a/homeassistant/generated/integrations.json
+++ b/homeassistant/generated/integrations.json
@@ -3053,6 +3053,12 @@
       "config_flow": false,
       "iot_class": "assumed_state"
     },
+    "linear_garage_door": {
+      "name": "Linear Garage Door",
+      "integration_type": "hub",
+      "config_flow": true,
+      "iot_class": "cloud_polling"
+    },
     "linksys_smart": {
       "name": "Linksys Smart Wi-Fi",
       "integration_type": "hub",
diff --git a/mypy.ini b/mypy.ini
index 41a02600d94..0ed06edaa1d 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1781,6 +1781,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.linear_garage_door.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.litejet.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true
diff --git a/requirements_all.txt b/requirements_all.txt
index b91b3a3fa06..61e74f00c0d 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1177,6 +1177,9 @@ lightwave==0.24
 # homeassistant.components.limitlessled
 limitlessled==1.1.3
 
+# homeassistant.components.linear_garage_door
+linear-garage-door==0.2.7
+
 # homeassistant.components.linode
 linode-api==4.1.9b1
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index a0e5c0b9871..560d8a9694b 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -919,6 +919,9 @@ libsoundtouch==0.8
 # homeassistant.components.life360
 life360==6.0.0
 
+# homeassistant.components.linear_garage_door
+linear-garage-door==0.2.7
+
 # homeassistant.components.logi_circle
 logi-circle==0.2.3
 
diff --git a/tests/components/linear_garage_door/__init__.py b/tests/components/linear_garage_door/__init__.py
new file mode 100644
index 00000000000..e5abc6c943c
--- /dev/null
+++ b/tests/components/linear_garage_door/__init__.py
@@ -0,0 +1 @@
+"""Tests for the Linear Garage Door integration."""
diff --git a/tests/components/linear_garage_door/test_config_flow.py b/tests/components/linear_garage_door/test_config_flow.py
new file mode 100644
index 00000000000..88cfca71f98
--- /dev/null
+++ b/tests/components/linear_garage_door/test_config_flow.py
@@ -0,0 +1,161 @@
+"""Test the Linear Garage Door config flow."""
+
+from unittest.mock import patch
+
+from linear_garage_door.errors import InvalidLoginError
+
+from homeassistant import config_entries
+from homeassistant.components.linear_garage_door.const import DOMAIN
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+
+from .util import async_init_integration
+
+
+async def test_form(hass: HomeAssistant) -> None:
+    """Test we get the form."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == FlowResultType.FORM
+    assert result["errors"] is None
+
+    with patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.get_sites",
+        return_value=[{"id": "test-site-id", "name": "test-site-name"}],
+    ), patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.close",
+        return_value=None,
+    ), patch(
+        "uuid.uuid4", return_value="test-uuid"
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "email": "test-email",
+                "password": "test-password",
+            },
+        )
+        await hass.async_block_till_done()
+
+    with patch(
+        "homeassistant.components.linear_garage_door.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result3 = await hass.config_entries.flow.async_configure(
+            result2["flow_id"], {"site": "test-site-id"}
+        )
+        await hass.async_block_till_done()
+
+    assert result3["type"] == FlowResultType.CREATE_ENTRY
+    assert result3["title"] == "test-site-name"
+    assert result3["data"] == {
+        "email": "test-email",
+        "password": "test-password",
+        "site_id": "test-site-id",
+        "device_id": "test-uuid",
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_reauth(hass: HomeAssistant) -> None:
+    """Test reauthentication."""
+
+    entry = await async_init_integration(hass)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={
+            "source": config_entries.SOURCE_REAUTH,
+            "entry_id": entry.entry_id,
+            "title_placeholders": {"name": entry.title},
+            "unique_id": entry.unique_id,
+        },
+        data=entry.data,
+    )
+    assert result["type"] == FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    with patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.get_sites",
+        return_value=[{"id": "test-site-id", "name": "test-site-name"}],
+    ), patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.close",
+        return_value=None,
+    ), patch(
+        "uuid.uuid4", return_value="test-uuid"
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "email": "new-email",
+                "password": "new-password",
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result2["type"] == FlowResultType.ABORT
+    assert result2["reason"] == "reauth_successful"
+
+    entries = hass.config_entries.async_entries()
+    assert len(entries) == 1
+    assert entries[0].data == {
+        "email": "new-email",
+        "password": "new-password",
+        "site_id": "test-site-id",
+        "device_id": "test-uuid",
+    }
+
+
+async def test_form_invalid_login(hass: HomeAssistant) -> None:
+    """Test we handle invalid auth."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.login",
+        side_effect=InvalidLoginError,
+    ), patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.close",
+        return_value=None,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "email": "test-email",
+                "password": "test-password",
+            },
+        )
+
+    assert result2["type"] == FlowResultType.FORM
+    assert result2["errors"] == {"base": "invalid_auth"}
+
+
+async def test_form_exception(hass: HomeAssistant) -> None:
+    """Test we handle invalid auth."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={"source": config_entries.SOURCE_USER},
+    )
+
+    with patch(
+        "homeassistant.components.linear_garage_door.config_flow.Linear.login",
+        side_effect=Exception,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                "email": "test-email",
+                "password": "test-password",
+            },
+        )
+
+    assert result2["type"] == FlowResultType.FORM
+    assert result2["errors"] == {"base": "unknown"}
diff --git a/tests/components/linear_garage_door/test_coordinator.py b/tests/components/linear_garage_door/test_coordinator.py
new file mode 100644
index 00000000000..fc3087db354
--- /dev/null
+++ b/tests/components/linear_garage_door/test_coordinator.py
@@ -0,0 +1,99 @@
+"""Test data update coordinator for Linear Garage Door."""
+
+from unittest.mock import patch
+
+from linear_garage_door.errors import InvalidLoginError, ResponseError
+
+from homeassistant.components.linear_garage_door.const import DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def test_invalid_password(
+    hass: HomeAssistant,
+) -> None:
+    """Test invalid password."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "email": "test-email",
+            "password": "test-password",
+            "site_id": "test-site-id",
+            "device_id": "test-uuid",
+        },
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.login",
+        side_effect=InvalidLoginError(
+            "Login provided is invalid, please check the email and password"
+        ),
+    ):
+        assert not await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    entries = hass.config_entries.async_entries(DOMAIN)
+    assert entries
+    assert len(entries) == 1
+    assert entries[0].state == ConfigEntryState.SETUP_ERROR
+    flows = hass.config_entries.flow.async_progress_by_handler(DOMAIN)
+    assert flows
+    assert len(flows) == 1
+    assert flows[0]["context"]["source"] == "reauth"
+
+
+async def test_response_error(hass: HomeAssistant) -> None:
+    """Test response error."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "email": "test-email",
+            "password": "test-password",
+            "site_id": "test-site-id",
+            "device_id": "test-uuid",
+        },
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.login",
+        side_effect=ResponseError,
+    ):
+        assert not await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    entries = hass.config_entries.async_entries(DOMAIN)
+    assert entries
+    assert len(entries) == 1
+    assert entries[0].state == ConfigEntryState.SETUP_RETRY
+
+
+async def test_invalid_login(
+    hass: HomeAssistant,
+) -> None:
+    """Test invalid login."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "email": "test-email",
+            "password": "test-password",
+            "site_id": "test-site-id",
+            "device_id": "test-uuid",
+        },
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.login",
+        side_effect=InvalidLoginError("Some other error"),
+    ):
+        assert not await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    entries = hass.config_entries.async_entries(DOMAIN)
+    assert entries
+    assert len(entries) == 1
+    assert entries[0].state == ConfigEntryState.SETUP_RETRY
diff --git a/tests/components/linear_garage_door/test_cover.py b/tests/components/linear_garage_door/test_cover.py
new file mode 100644
index 00000000000..428411d39e0
--- /dev/null
+++ b/tests/components/linear_garage_door/test_cover.py
@@ -0,0 +1,187 @@
+"""Test Linear Garage Door cover."""
+
+from datetime import timedelta
+from unittest.mock import patch
+
+from homeassistant.components.cover import (
+    DOMAIN as COVER_DOMAIN,
+    SERVICE_CLOSE_COVER,
+    SERVICE_OPEN_COVER,
+    STATE_CLOSED,
+    STATE_CLOSING,
+    STATE_OPEN,
+    STATE_OPENING,
+)
+from homeassistant.components.linear_garage_door.const import DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.const import ATTR_ENTITY_ID
+from homeassistant.core import HomeAssistant
+import homeassistant.util.dt as dt_util
+
+from .util import async_init_integration
+
+from tests.common import async_fire_time_changed
+
+
+async def test_data(hass: HomeAssistant) -> None:
+    """Test that data gets parsed and returned appropriately."""
+
+    await async_init_integration(hass)
+
+    assert hass.data[DOMAIN]
+    entries = hass.config_entries.async_entries(DOMAIN)
+    assert entries
+    assert len(entries) == 1
+    assert entries[0].state == ConfigEntryState.LOADED
+    assert hass.states.get("cover.test_garage_1").state == STATE_OPEN
+    assert hass.states.get("cover.test_garage_2").state == STATE_CLOSED
+    assert hass.states.get("cover.test_garage_3").state == STATE_OPENING
+    assert hass.states.get("cover.test_garage_4").state == STATE_CLOSING
+
+
+async def test_open_cover(hass: HomeAssistant) -> None:
+    """Test that opening the cover works as intended."""
+
+    await async_init_integration(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.operate_device"
+    ) as operate_device:
+        await hass.services.async_call(
+            COVER_DOMAIN,
+            SERVICE_OPEN_COVER,
+            {ATTR_ENTITY_ID: "cover.test_garage_1"},
+            blocking=True,
+        )
+
+    assert operate_device.call_count == 0
+
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.operate_device",
+        return_value=None,
+    ) as operate_device, patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.close",
+        return_value=True,
+    ):
+        await hass.services.async_call(
+            COVER_DOMAIN,
+            SERVICE_OPEN_COVER,
+            {ATTR_ENTITY_ID: "cover.test_garage_2"},
+            blocking=True,
+        )
+
+    assert operate_device.call_count == 1
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.get_devices",
+        return_value=[
+            {"id": "test1", "name": "Test Garage 1", "subdevices": ["GDO", "Light"]},
+            {"id": "test2", "name": "Test Garage 2", "subdevices": ["GDO", "Light"]},
+        ],
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.get_device_state",
+        side_effect=lambda id: {
+            "test1": {
+                "GDO": {"Open_B": "true", "Open_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+            "test2": {
+                "GDO": {"Open_B": "false", "Opening_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test3": {
+                "GDO": {"Open_B": "false", "Opening_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test4": {
+                "GDO": {"Open_B": "true", "Opening_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+        }[id],
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.close",
+        return_value=True,
+    ):
+        async_fire_time_changed(hass, dt_util.utcnow() + timedelta(seconds=60))
+        await hass.async_block_till_done()
+
+    assert hass.states.get("cover.test_garage_2").state == STATE_OPENING
+
+
+async def test_close_cover(hass: HomeAssistant) -> None:
+    """Test that closing the cover works as intended."""
+
+    await async_init_integration(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.operate_device"
+    ) as operate_device:
+        await hass.services.async_call(
+            COVER_DOMAIN,
+            SERVICE_CLOSE_COVER,
+            {ATTR_ENTITY_ID: "cover.test_garage_2"},
+            blocking=True,
+        )
+
+    assert operate_device.call_count == 0
+
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.operate_device",
+        return_value=None,
+    ) as operate_device, patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.close",
+        return_value=True,
+    ):
+        await hass.services.async_call(
+            COVER_DOMAIN,
+            SERVICE_CLOSE_COVER,
+            {ATTR_ENTITY_ID: "cover.test_garage_1"},
+            blocking=True,
+        )
+
+    assert operate_device.call_count == 1
+    with patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.get_devices",
+        return_value=[
+            {"id": "test1", "name": "Test Garage 1", "subdevices": ["GDO", "Light"]},
+            {"id": "test2", "name": "Test Garage 2", "subdevices": ["GDO", "Light"]},
+        ],
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.get_device_state",
+        side_effect=lambda id: {
+            "test1": {
+                "GDO": {"Open_B": "true", "Opening_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+            "test2": {
+                "GDO": {"Open_B": "false", "Open_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test3": {
+                "GDO": {"Open_B": "false", "Opening_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test4": {
+                "GDO": {"Open_B": "true", "Opening_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+        }[id],
+    ), patch(
+        "homeassistant.components.linear_garage_door.cover.Linear.close",
+        return_value=True,
+    ):
+        async_fire_time_changed(hass, dt_util.utcnow() + timedelta(seconds=60))
+        await hass.async_block_till_done()
+
+    assert hass.states.get("cover.test_garage_1").state == STATE_CLOSING
diff --git a/tests/components/linear_garage_door/test_diagnostics.py b/tests/components/linear_garage_door/test_diagnostics.py
new file mode 100644
index 00000000000..0650196d619
--- /dev/null
+++ b/tests/components/linear_garage_door/test_diagnostics.py
@@ -0,0 +1,53 @@
+"""Test diagnostics of Linear Garage Door."""
+
+from homeassistant.core import HomeAssistant
+
+from .util import async_init_integration
+
+from tests.components.diagnostics import get_diagnostics_for_config_entry
+from tests.typing import ClientSessionGenerator
+
+
+async def test_entry_diagnostics(
+    hass: HomeAssistant, hass_client: ClientSessionGenerator
+) -> None:
+    """Test config entry diagnostics."""
+    entry = await async_init_integration(hass)
+    result = await get_diagnostics_for_config_entry(hass, hass_client, entry)
+
+    assert result["entry"]["data"] == {
+        "email": "**REDACTED**",
+        "password": "**REDACTED**",
+        "site_id": "test-site-id",
+        "device_id": "test-uuid",
+    }
+    assert result["coordinator_data"] == {
+        "test1": {
+            "name": "Test Garage 1",
+            "subdevices": {
+                "GDO": {"Open_B": "true", "Open_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+        },
+        "test2": {
+            "name": "Test Garage 2",
+            "subdevices": {
+                "GDO": {"Open_B": "false", "Open_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+        },
+        "test3": {
+            "name": "Test Garage 3",
+            "subdevices": {
+                "GDO": {"Open_B": "false", "Opening_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+        },
+        "test4": {
+            "name": "Test Garage 4",
+            "subdevices": {
+                "GDO": {"Open_B": "true", "Opening_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+        },
+    }
diff --git a/tests/components/linear_garage_door/test_init.py b/tests/components/linear_garage_door/test_init.py
new file mode 100644
index 00000000000..e8d76770050
--- /dev/null
+++ b/tests/components/linear_garage_door/test_init.py
@@ -0,0 +1,59 @@
+"""Test Linear Garage Door init."""
+
+from unittest.mock import patch
+
+from homeassistant.components.linear_garage_door.const import DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def test_unload_entry(hass: HomeAssistant) -> None:
+    """Test the unload entry."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "email": "test-email",
+            "password": "test-password",
+            "site_id": "test-site-id",
+            "device_id": "test-uuid",
+        },
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.get_devices",
+        return_value=[
+            {"id": "test", "name": "Test Garage", "subdevices": ["GDO", "Light"]}
+        ],
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.get_device_state",
+        return_value={
+            "GDO": {"Open_B": "true", "Open_P": "100"},
+            "Light": {"On_B": "true", "On_P": "10"},
+        },
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.close",
+        return_value=True,
+    ):
+        assert await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    assert hass.data[DOMAIN]
+
+    entries = hass.config_entries.async_entries(DOMAIN)
+    assert entries
+    assert len(entries) == 1
+    assert entries[0].state == ConfigEntryState.LOADED
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.close",
+        return_value=True,
+    ):
+        await hass.config_entries.async_unload(entries[0].entry_id)
+        await hass.async_block_till_done()
+    assert entries[0].state == ConfigEntryState.NOT_LOADED
diff --git a/tests/components/linear_garage_door/util.py b/tests/components/linear_garage_door/util.py
new file mode 100644
index 00000000000..d8348b9bb64
--- /dev/null
+++ b/tests/components/linear_garage_door/util.py
@@ -0,0 +1,62 @@
+"""Utilities for Linear Garage Door testing."""
+
+from unittest.mock import patch
+
+from homeassistant.components.linear_garage_door.const import DOMAIN
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def async_init_integration(hass: HomeAssistant) -> MockConfigEntry:
+    """Initialize mock integration."""
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "email": "test-email",
+            "password": "test-password",
+            "site_id": "test-site-id",
+            "device_id": "test-uuid",
+        },
+    )
+    config_entry.add_to_hass(hass)
+
+    with patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.login",
+        return_value=True,
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.get_devices",
+        return_value=[
+            {"id": "test1", "name": "Test Garage 1", "subdevices": ["GDO", "Light"]},
+            {"id": "test2", "name": "Test Garage 2", "subdevices": ["GDO", "Light"]},
+            {"id": "test3", "name": "Test Garage 3", "subdevices": ["GDO", "Light"]},
+            {"id": "test4", "name": "Test Garage 4", "subdevices": ["GDO", "Light"]},
+        ],
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.get_device_state",
+        side_effect=lambda id: {
+            "test1": {
+                "GDO": {"Open_B": "true", "Open_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+            "test2": {
+                "GDO": {"Open_B": "false", "Open_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test3": {
+                "GDO": {"Open_B": "false", "Opening_P": "0"},
+                "Light": {"On_B": "false", "On_P": "0"},
+            },
+            "test4": {
+                "GDO": {"Open_B": "true", "Opening_P": "100"},
+                "Light": {"On_B": "true", "On_P": "100"},
+            },
+        }[id],
+    ), patch(
+        "homeassistant.components.linear_garage_door.coordinator.Linear.close",
+        return_value=True,
+    ):
+        assert await hass.config_entries.async_setup(config_entry.entry_id)
+        await hass.async_block_till_done()
+
+    return config_entry