diff --git a/homeassistant/components/zha/core/const.py b/homeassistant/components/zha/core/const.py
index 2eb567ab4c4..43b1634cba7 100644
--- a/homeassistant/components/zha/core/const.py
+++ b/homeassistant/components/zha/core/const.py
@@ -23,7 +23,6 @@ ATTR_COMMAND_TYPE = "command_type"
 ATTR_DEVICE_IEEE = "device_ieee"
 ATTR_DEVICE_TYPE = "device_type"
 ATTR_ENDPOINT_ID = "endpoint_id"
-ATTR_ENTITY_DOMAIN = "entity_domain"
 ATTR_IEEE = "ieee"
 ATTR_LAST_SEEN = "last_seen"
 ATTR_LEVEL = "level"
diff --git a/homeassistant/components/zha/core/discovery.py b/homeassistant/components/zha/core/discovery.py
index 7202fd869fa..19a83c3b6bc 100644
--- a/homeassistant/components/zha/core/discovery.py
+++ b/homeassistant/components/zha/core/discovery.py
@@ -6,6 +6,7 @@ from typing import Callable, List, Tuple
 
 from homeassistant import const as ha_const
 from homeassistant.core import callback
+from homeassistant.helpers.dispatcher import async_dispatcher_send
 from homeassistant.helpers.entity_registry import async_entries_for_device
 from homeassistant.helpers.typing import HomeAssistantType
 
@@ -182,59 +183,48 @@ class GroupProbe:
             )
             return
 
-        if group.entity_domain is None:
-            _LOGGER.debug(
-                "Group: %s:0x%04x has no user set entity domain - attempting entity domain discovery",
-                group.name,
-                group.group_id,
-            )
-            group.entity_domain = GroupProbe.determine_default_entity_domain(
-                self._hass, group
-            )
+        entity_domains = GroupProbe.determine_entity_domains(self._hass, group)
 
-        if group.entity_domain is None:
+        if not entity_domains:
             return
 
-        _LOGGER.debug(
-            "Group: %s:0x%04x has an entity domain of: %s after discovery",
-            group.name,
-            group.group_id,
-            group.entity_domain,
-        )
-
         zha_gateway = self._hass.data[zha_const.DATA_ZHA][zha_const.DATA_ZHA_GATEWAY]
-        entity_class = zha_regs.ZHA_ENTITIES.get_group_entity(group.entity_domain)
-        if entity_class is None:
-            return
-
-        self._hass.data[zha_const.DATA_ZHA][group.entity_domain].append(
-            (
-                entity_class,
+        for domain in entity_domains:
+            entity_class = zha_regs.ZHA_ENTITIES.get_group_entity(domain)
+            if entity_class is None:
+                continue
+            self._hass.data[zha_const.DATA_ZHA][domain].append(
                 (
-                    group.domain_entity_ids,
-                    f"{group.entity_domain}_group_{group.group_id}",
-                    group.group_id,
-                    zha_gateway.coordinator_zha_device,
-                ),
+                    entity_class,
+                    (
+                        group.get_domain_entity_ids(domain),
+                        f"{domain}_group_{group.group_id}",
+                        group.group_id,
+                        zha_gateway.coordinator_zha_device,
+                    ),
+                )
             )
-        )
+        async_dispatcher_send(self._hass, zha_const.SIGNAL_ADD_ENTITIES)
 
     @staticmethod
-    def determine_default_entity_domain(
+    def determine_entity_domains(
         hass: HomeAssistantType, group: zha_typing.ZhaGroupType
-    ):
-        """Determine the default entity domain for this group."""
+    ) -> List[str]:
+        """Determine the entity domains for this group."""
+        entity_domains: List[str] = []
         if len(group.members) < 2:
             _LOGGER.debug(
                 "Group: %s:0x%04x has less than 2 members so cannot default an entity domain",
                 group.name,
                 group.group_id,
             )
-            return None
+            return entity_domains
 
         zha_gateway = hass.data[zha_const.DATA_ZHA][zha_const.DATA_ZHA_GATEWAY]
         all_domain_occurrences = []
         for device in group.members:
+            if device.is_coordinator:
+                continue
             entities = async_entries_for_device(
                 zha_gateway.ha_entity_registry, device.device_id
             )
@@ -245,15 +235,18 @@ class GroupProbe:
                     if entity.domain in zha_regs.GROUP_ENTITY_DOMAINS
                 ]
             )
+        if not all_domain_occurrences:
+            return entity_domains
+        # get all domains we care about if there are more than 2 entities of this domain
         counts = Counter(all_domain_occurrences)
-        domain = counts.most_common(1)[0][0]
+        entity_domains = [domain[0] for domain in counts.items() if domain[1] >= 2]
         _LOGGER.debug(
-            "The default entity domain is: %s for group: %s:0x%04x",
-            domain,
+            "The entity domains are: %s for group: %s:0x%04x",
+            entity_domains,
             group.name,
             group.group_id,
         )
-        return domain
+        return entity_domains
 
 
 PROBE = ProbeEndpoint()
diff --git a/homeassistant/components/zha/core/gateway.py b/homeassistant/components/zha/core/gateway.py
index 9d5bf609ed2..bc7ff42d25f 100644
--- a/homeassistant/components/zha/core/gateway.py
+++ b/homeassistant/components/zha/core/gateway.py
@@ -445,8 +445,6 @@ class ZHAGateway:
         if zha_group is None:
             zha_group = ZHAGroup(self._hass, self, zigpy_group)
             self._groups[zigpy_group.group_id] = zha_group
-        group_entry = self.zha_storage.async_get_or_create_group(zha_group)
-        zha_group.entity_domain = group_entry.entity_domain
         return zha_group
 
     @callback
@@ -469,8 +467,6 @@ class ZHAGateway:
         """Update the devices in the store."""
         for device in self.devices.values():
             self.zha_storage.async_update_device(device)
-        for group in self.groups.values():
-            self.zha_storage.async_update_group(group)
         await self.zha_storage.async_save()
 
     async def async_device_initialized(self, device: zha_typing.ZigpyDeviceType):
@@ -559,9 +555,7 @@ class ZHAGateway:
             zha_group.group_id,
         )
         discovery.GROUP_PROBE.discover_group_entities(zha_group)
-        if zha_group.entity_domain is not None:
-            self.zha_storage.async_update_group(zha_group)
-            async_dispatcher_send(self._hass, SIGNAL_ADD_ENTITIES)
+
         return zha_group
 
     async def async_remove_zigpy_group(self, group_id: int) -> None:
@@ -577,7 +571,6 @@ class ZHAGateway:
             if tasks:
                 await asyncio.gather(*tasks)
         self.application_controller.groups.pop(group_id)
-        self.zha_storage.async_delete_group(group)
 
     async def shutdown(self):
         """Stop ZHA Controller Application."""
diff --git a/homeassistant/components/zha/core/group.py b/homeassistant/components/zha/core/group.py
index e6b2dee0625..4fc86012d1a 100644
--- a/homeassistant/components/zha/core/group.py
+++ b/homeassistant/components/zha/core/group.py
@@ -1,7 +1,7 @@
 """Group for Zigbee Home Automation."""
 import asyncio
 import logging
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List
 
 from zigpy.types.named import EUI64
 
@@ -28,7 +28,6 @@ class ZHAGroup(LogMixin):
         self.hass: HomeAssistantType = hass
         self._zigpy_group: ZigpyGroupType = zigpy_group
         self._zha_gateway: ZhaGatewayType = zha_gateway
-        self._entity_domain: str = None
 
     @property
     def name(self) -> str:
@@ -45,16 +44,6 @@ class ZHAGroup(LogMixin):
         """Return the endpoint for this group."""
         return self._zigpy_group.endpoint
 
-    @property
-    def entity_domain(self) -> Optional[str]:
-        """Return the domain that will be used for the entity representing this group."""
-        return self._entity_domain
-
-    @entity_domain.setter
-    def entity_domain(self, domain: Optional[str]) -> None:
-        """Set the domain that will be used for the entity representing this group."""
-        self._entity_domain = domain
-
     @property
     def members(self) -> List[ZhaDeviceType]:
         """Return the ZHA devices that are members of this group."""
@@ -106,22 +95,15 @@ class ZHAGroup(LogMixin):
                 all_entity_ids.append(entity.entity_id)
         return all_entity_ids
 
-    @property
-    def domain_entity_ids(self) -> List[str]:
+    def get_domain_entity_ids(self, domain) -> List[str]:
         """Return entity ids from the entity domain for this group."""
-        if self.entity_domain is None:
-            return
         domain_entity_ids: List[str] = []
         for device in self.members:
             entities = async_entries_for_device(
                 self._zha_gateway.ha_entity_registry, device.device_id
             )
             domain_entity_ids.extend(
-                [
-                    entity.entity_id
-                    for entity in entities
-                    if entity.domain == self.entity_domain
-                ]
+                [entity.entity_id for entity in entities if entity.domain == domain]
             )
         return domain_entity_ids
 
@@ -130,7 +112,6 @@ class ZHAGroup(LogMixin):
         """Get ZHA group info."""
         group_info: Dict[str, Any] = {}
         group_info["group_id"] = self.group_id
-        group_info["entity_domain"] = self.entity_domain
         group_info["name"] = self.name
         group_info["members"] = [
             zha_device.async_get_info() for zha_device in self.members
diff --git a/homeassistant/components/zha/core/registries.py b/homeassistant/components/zha/core/registries.py
index b596eefb71a..29b71343245 100644
--- a/homeassistant/components/zha/core/registries.py
+++ b/homeassistant/components/zha/core/registries.py
@@ -32,7 +32,7 @@ from .const import CONTROLLER, ZHA_GW_RADIO, ZHA_GW_RADIO_DESCRIPTION, RadioType
 from .decorators import CALLABLE_T, DictRegistry, SetRegistry
 from .typing import ChannelType
 
-GROUP_ENTITY_DOMAINS = [LIGHT, SWITCH]
+GROUP_ENTITY_DOMAINS = [LIGHT, SWITCH, FAN]
 
 SMARTTHINGS_ACCELERATION_CLUSTER = 0xFC02
 SMARTTHINGS_ARRIVAL_SENSOR_DEVICE_TYPE = 0x8000
diff --git a/homeassistant/components/zha/core/store.py b/homeassistant/components/zha/core/store.py
index 0cd9e045cb6..00a4942c7b7 100644
--- a/homeassistant/components/zha/core/store.py
+++ b/homeassistant/components/zha/core/store.py
@@ -10,7 +10,7 @@ from homeassistant.core import callback
 from homeassistant.helpers.typing import HomeAssistantType
 from homeassistant.loader import bind_hass
 
-from .typing import ZhaDeviceType, ZhaGroupType
+from .typing import ZhaDeviceType
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -30,15 +30,6 @@ class ZhaDeviceEntry:
     last_seen = attr.ib(type=float, default=None)
 
 
-@attr.s(slots=True, frozen=True)
-class ZhaGroupEntry:
-    """Zha Group storage Entry."""
-
-    name = attr.ib(type=str, default=None)
-    group_id = attr.ib(type=int, default=None)
-    entity_domain = attr.ib(type=float, default=None)
-
-
 class ZhaStorage:
     """Class to hold a registry of zha devices."""
 
@@ -46,7 +37,6 @@ class ZhaStorage:
         """Initialize the zha device storage."""
         self.hass: HomeAssistantType = hass
         self.devices: MutableMapping[str, ZhaDeviceEntry] = {}
-        self.groups: MutableMapping[str, ZhaGroupEntry] = {}
         self._store = hass.helpers.storage.Store(STORAGE_VERSION, STORAGE_KEY)
 
     @callback
@@ -59,17 +49,6 @@ class ZhaStorage:
 
         return self.async_update_device(device)
 
-    @callback
-    def async_create_group(self, group: ZhaGroupType) -> ZhaGroupEntry:
-        """Create a new ZhaGroupEntry."""
-        group_entry: ZhaGroupEntry = ZhaGroupEntry(
-            name=group.name,
-            group_id=str(group.group_id),
-            entity_domain=group.entity_domain,
-        )
-        self.groups[str(group.group_id)] = group_entry
-        return self.async_update_group(group)
-
     @callback
     def async_get_or_create_device(self, device: ZhaDeviceType) -> ZhaDeviceEntry:
         """Create a new ZhaDeviceEntry."""
@@ -78,14 +57,6 @@ class ZhaStorage:
             return self.devices[ieee_str]
         return self.async_create_device(device)
 
-    @callback
-    def async_get_or_create_group(self, group: ZhaGroupType) -> ZhaGroupEntry:
-        """Create a new ZhaGroupEntry."""
-        group_id: str = str(group.group_id)
-        if group_id in self.groups:
-            return self.groups[group_id]
-        return self.async_create_group(group)
-
     @callback
     def async_create_or_update_device(self, device: ZhaDeviceType) -> ZhaDeviceEntry:
         """Create or update a ZhaDeviceEntry."""
@@ -93,13 +64,6 @@ class ZhaStorage:
             return self.async_update_device(device)
         return self.async_create_device(device)
 
-    @callback
-    def async_create_or_update_group(self, group: ZhaGroupType) -> ZhaGroupEntry:
-        """Create or update a ZhaGroupEntry."""
-        if str(group.group_id) in self.groups:
-            return self.async_update_group(group)
-        return self.async_create_group(group)
-
     @callback
     def async_delete_device(self, device: ZhaDeviceType) -> None:
         """Delete ZhaDeviceEntry."""
@@ -108,14 +72,6 @@ class ZhaStorage:
             del self.devices[ieee_str]
             self.async_schedule_save()
 
-    @callback
-    def async_delete_group(self, group: ZhaGroupType) -> None:
-        """Delete ZhaGroupEntry."""
-        group_id: str = str(group.group_id)
-        if group_id in self.groups:
-            del self.groups[group_id]
-            self.async_schedule_save()
-
     @callback
     def async_update_device(self, device: ZhaDeviceType) -> ZhaDeviceEntry:
         """Update name of ZhaDeviceEntry."""
@@ -129,25 +85,11 @@ class ZhaStorage:
         self.async_schedule_save()
         return new
 
-    @callback
-    def async_update_group(self, group: ZhaGroupType) -> ZhaGroupEntry:
-        """Update name of ZhaGroupEntry."""
-        group_id: str = str(group.group_id)
-        old = self.groups[group_id]
-
-        changes = {}
-        changes["entity_domain"] = group.entity_domain
-
-        new = self.groups[group_id] = attr.evolve(old, **changes)
-        self.async_schedule_save()
-        return new
-
     async def async_load(self) -> None:
         """Load the registry of zha device entries."""
         data = await self._store.async_load()
 
         devices: "OrderedDict[str, ZhaDeviceEntry]" = OrderedDict()
-        groups: "OrderedDict[str, ZhaGroupEntry]" = OrderedDict()
 
         if data is not None:
             for device in data["devices"]:
@@ -157,18 +99,7 @@ class ZhaStorage:
                     last_seen=device["last_seen"] if "last_seen" in device else None,
                 )
 
-            if "groups" in data:
-                for group in data["groups"]:
-                    groups[group["group_id"]] = ZhaGroupEntry(
-                        name=group["name"],
-                        group_id=group["group_id"],
-                        entity_domain=group["entity_domain"]
-                        if "entity_domain" in group
-                        else None,
-                    )
-
         self.devices = devices
-        self.groups = groups
 
     @callback
     def async_schedule_save(self) -> None:
@@ -189,14 +120,6 @@ class ZhaStorage:
             for entry in self.devices.values()
         ]
 
-        data["groups"] = [
-            {
-                "name": entry.name,
-                "group_id": entry.group_id,
-                "entity_domain": entry.entity_domain,
-            }
-            for entry in self.groups.values()
-        ]
         return data
 
 
diff --git a/homeassistant/components/zha/fan.py b/homeassistant/components/zha/fan.py
index d04453cd675..027d0f8a1ee 100644
--- a/homeassistant/components/zha/fan.py
+++ b/homeassistant/components/zha/fan.py
@@ -1,6 +1,10 @@
 """Fans on Zigbee Home Automation networks."""
 import functools
 import logging
+from typing import List, Optional
+
+from zigpy.exceptions import DeliveryError
+import zigpy.zcl.clusters.hvac as hvac
 
 from homeassistant.components.fan import (
     DOMAIN,
@@ -11,8 +15,10 @@ from homeassistant.components.fan import (
     SUPPORT_SET_SPEED,
     FanEntity,
 )
-from homeassistant.core import callback
+from homeassistant.const import STATE_UNAVAILABLE
+from homeassistant.core import CALLBACK_TYPE, State, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
+from homeassistant.helpers.event import async_track_state_change
 
 from .core import discovery
 from .core.const import (
@@ -21,9 +27,10 @@ from .core.const import (
     DATA_ZHA_DISPATCHERS,
     SIGNAL_ADD_ENTITIES,
     SIGNAL_ATTR_UPDATED,
+    SIGNAL_REMOVE_GROUP,
 )
 from .core.registries import ZHA_ENTITIES
-from .entity import ZhaEntity
+from .entity import BaseZhaEntity, ZhaEntity
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -49,6 +56,7 @@ SPEED_LIST = [
 VALUE_TO_SPEED = dict(enumerate(SPEED_LIST))
 SPEED_TO_VALUE = {speed: i for i, speed in enumerate(SPEED_LIST)}
 STRICT_MATCH = functools.partial(ZHA_ENTITIES.strict_match, DOMAIN)
+GROUP_MATCH = functools.partial(ZHA_ENTITIES.group_match, DOMAIN)
 
 
 async def async_setup_entry(hass, config_entry, async_add_entities):
@@ -65,31 +73,14 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
     hass.data[DATA_ZHA][DATA_ZHA_DISPATCHERS].append(unsub)
 
 
-@STRICT_MATCH(channel_names=CHANNEL_FAN)
-class ZhaFan(ZhaEntity, FanEntity):
-    """Representation of a ZHA fan."""
+class BaseFan(BaseZhaEntity, FanEntity):
+    """Base representation of a ZHA fan."""
 
-    def __init__(self, unique_id, zha_device, channels, **kwargs):
-        """Init this sensor."""
-        super().__init__(unique_id, zha_device, channels, **kwargs)
-        self._fan_channel = self.cluster_channels.get(CHANNEL_FAN)
-
-    async def async_added_to_hass(self):
-        """Run when about to be added to hass."""
-        await super().async_added_to_hass()
-        await self.async_accept_signal(
-            self._fan_channel, SIGNAL_ATTR_UPDATED, self.async_set_state
-        )
-
-    @callback
-    def async_restore_last_state(self, last_state):
-        """Restore previous state."""
-        self._state = VALUE_TO_SPEED.get(last_state.state, last_state.state)
-
-    @property
-    def supported_features(self) -> int:
-        """Flag supported features."""
-        return SUPPORT_SET_SPEED
+    def __init__(self, *args, **kwargs):
+        """Initialize the fan."""
+        super().__init__(*args, **kwargs)
+        self._state = None
+        self._fan_channel = None
 
     @property
     def speed_list(self) -> list:
@@ -109,15 +100,9 @@ class ZhaFan(ZhaEntity, FanEntity):
         return self._state != SPEED_OFF
 
     @property
-    def device_state_attributes(self):
-        """Return state attributes."""
-        return self.state_attributes
-
-    @callback
-    def async_set_state(self, attr_id, attr_name, value):
-        """Handle state update from channel."""
-        self._state = VALUE_TO_SPEED.get(value, self._state)
-        self.async_write_ha_state()
+    def supported_features(self) -> int:
+        """Flag supported features."""
+        return SUPPORT_SET_SPEED
 
     async def async_turn_on(self, speed: str = None, **kwargs) -> None:
         """Turn the entity on."""
@@ -135,6 +120,34 @@ class ZhaFan(ZhaEntity, FanEntity):
         await self._fan_channel.async_set_speed(SPEED_TO_VALUE[speed])
         self.async_set_state(0, "fan_mode", speed)
 
+
+@STRICT_MATCH(channel_names=CHANNEL_FAN)
+class ZhaFan(ZhaEntity, BaseFan):
+    """Representation of a ZHA fan."""
+
+    def __init__(self, unique_id, zha_device, channels, **kwargs):
+        """Init this sensor."""
+        super().__init__(unique_id, zha_device, channels, **kwargs)
+        self._fan_channel = self.cluster_channels.get(CHANNEL_FAN)
+
+    async def async_added_to_hass(self):
+        """Run when about to be added to hass."""
+        await super().async_added_to_hass()
+        await self.async_accept_signal(
+            self._fan_channel, SIGNAL_ATTR_UPDATED, self.async_set_state
+        )
+
+    @callback
+    def async_restore_last_state(self, last_state):
+        """Restore previous state."""
+        self._state = VALUE_TO_SPEED.get(last_state.state, last_state.state)
+
+    @callback
+    def async_set_state(self, attr_id, attr_name, value):
+        """Handle state update from channel."""
+        self._state = VALUE_TO_SPEED.get(value, self._state)
+        self.async_write_ha_state()
+
     async def async_update(self):
         """Attempt to retrieve on off state from the fan."""
         await super().async_update()
@@ -142,3 +155,73 @@ class ZhaFan(ZhaEntity, FanEntity):
             state = await self._fan_channel.get_attribute_value("fan_mode")
             if state is not None:
                 self._state = VALUE_TO_SPEED.get(state, self._state)
+
+
+@GROUP_MATCH()
+class FanGroup(BaseFan):
+    """Representation of a fan group."""
+
+    def __init__(
+        self, entity_ids: List[str], unique_id: str, group_id: int, zha_device, **kwargs
+    ) -> None:
+        """Initialize a fan group."""
+        super().__init__(unique_id, zha_device, **kwargs)
+        self._name: str = f"{zha_device.gateway.groups.get(group_id).name}_group_{group_id}"
+        self._group_id: int = group_id
+        self._available: bool = False
+        self._entity_ids: List[str] = entity_ids
+        self._async_unsub_state_changed: Optional[CALLBACK_TYPE] = None
+        group = self.zha_device.gateway.get_group(self._group_id)
+        self._fan_channel = group.endpoint[hvac.Fan.cluster_id]
+
+        # what should we do with this hack?
+        async def async_set_speed(value) -> None:
+            """Set the speed of the fan."""
+            try:
+                await self._fan_channel.write_attributes({"fan_mode": value})
+            except DeliveryError as ex:
+                self.error("Could not set speed: %s", ex)
+                return
+
+        self._fan_channel.async_set_speed = async_set_speed
+
+    async def async_added_to_hass(self) -> None:
+        """Register callbacks."""
+        await super().async_added_to_hass()
+        await self.async_accept_signal(
+            None,
+            f"{SIGNAL_REMOVE_GROUP}_{self._group_id}",
+            self.async_remove,
+            signal_override=True,
+        )
+
+        @callback
+        def async_state_changed_listener(
+            entity_id: str, old_state: State, new_state: State
+        ):
+            """Handle child updates."""
+            self.async_schedule_update_ha_state(True)
+
+        self._async_unsub_state_changed = async_track_state_change(
+            self.hass, self._entity_ids, async_state_changed_listener
+        )
+        await self.async_update()
+
+    async def async_will_remove_from_hass(self) -> None:
+        """Handle removal from Home Assistant."""
+        await super().async_will_remove_from_hass()
+        if self._async_unsub_state_changed is not None:
+            self._async_unsub_state_changed()
+            self._async_unsub_state_changed = None
+
+    async def async_update(self):
+        """Attempt to retrieve on off state from the fan."""
+        all_states = [self.hass.states.get(x) for x in self._entity_ids]
+        states: List[State] = list(filter(None, all_states))
+        on_states: List[State] = [state for state in states if state.state != SPEED_OFF]
+        self._available = any(state.state != STATE_UNAVAILABLE for state in states)
+        # for now just use first non off state since its kind of arbitrary
+        if not on_states:
+            self._state = SPEED_OFF
+        else:
+            self._state = states[0].state
diff --git a/tests/components/zha/test_fan.py b/tests/components/zha/test_fan.py
index 5011a847a4e..399982df37a 100644
--- a/tests/components/zha/test_fan.py
+++ b/tests/components/zha/test_fan.py
@@ -2,10 +2,21 @@
 from unittest.mock import call
 
 import pytest
+import zigpy.profiles.zha as zha
+import zigpy.zcl.clusters.general as general
 import zigpy.zcl.clusters.hvac as hvac
 
 from homeassistant.components import fan
-from homeassistant.components.fan import ATTR_SPEED, DOMAIN, SERVICE_SET_SPEED
+from homeassistant.components.fan import (
+    ATTR_SPEED,
+    DOMAIN,
+    SERVICE_SET_SPEED,
+    SPEED_HIGH,
+    SPEED_MEDIUM,
+    SPEED_OFF,
+)
+from homeassistant.components.light import DOMAIN as LIGHT_DOMAIN
+from homeassistant.components.zha.core.discovery import GROUP_PROBE
 from homeassistant.const import (
     ATTR_ENTITY_ID,
     SERVICE_TURN_OFF,
@@ -17,11 +28,16 @@ from homeassistant.const import (
 
 from .common import (
     async_enable_traffic,
+    async_find_group_entity_id,
     async_test_rejoin,
     find_entity_id,
+    get_zha_gateway,
     send_attributes_report,
 )
 
+IEEE_GROUPABLE_DEVICE = "01:2d:6f:00:0a:90:69:e8"
+IEEE_GROUPABLE_DEVICE2 = "02:2d:6f:00:0a:90:69:e8"
+
 
 @pytest.fixture
 def zigpy_device(zigpy_device_mock):
@@ -32,6 +48,66 @@ def zigpy_device(zigpy_device_mock):
     return zigpy_device_mock(endpoints)
 
 
+@pytest.fixture
+async def coordinator(hass, zigpy_device_mock, zha_device_joined):
+    """Test zha fan platform."""
+
+    zigpy_device = zigpy_device_mock(
+        {
+            1: {
+                "in_clusters": [],
+                "out_clusters": [],
+                "device_type": zha.DeviceType.COLOR_DIMMABLE_LIGHT,
+            }
+        },
+        ieee="00:15:8d:00:02:32:4f:32",
+        nwk=0x0000,
+    )
+    zha_device = await zha_device_joined(zigpy_device)
+    zha_device.set_available(True)
+    return zha_device
+
+
+@pytest.fixture
+async def device_fan_1(hass, zigpy_device_mock, zha_device_joined):
+    """Test zha fan platform."""
+
+    zigpy_device = zigpy_device_mock(
+        {
+            1: {
+                "in_clusters": [general.OnOff.cluster_id, hvac.Fan.cluster_id],
+                "out_clusters": [],
+            }
+        },
+        ieee=IEEE_GROUPABLE_DEVICE,
+    )
+    zha_device = await zha_device_joined(zigpy_device)
+    zha_device.set_available(True)
+    return zha_device
+
+
+@pytest.fixture
+async def device_fan_2(hass, zigpy_device_mock, zha_device_joined):
+    """Test zha fan platform."""
+
+    zigpy_device = zigpy_device_mock(
+        {
+            1: {
+                "in_clusters": [
+                    general.OnOff.cluster_id,
+                    hvac.Fan.cluster_id,
+                    general.LevelControl.cluster_id,
+                ],
+                "out_clusters": [],
+            }
+        },
+        ieee=IEEE_GROUPABLE_DEVICE2,
+    )
+    zha_device = await zha_device_joined(zigpy_device)
+    zha_device.set_available(True)
+    return zha_device
+
+
 async def test_fan(hass, zha_device_joined_restored, zigpy_device):
     """Test zha fan platform."""
 
@@ -106,3 +182,87 @@ async def async_set_speed(hass, entity_id, speed=None):
     }
 
     await hass.services.async_call(DOMAIN, SERVICE_SET_SPEED, data, blocking=True)
+
+
+async def async_test_zha_group_fan_entity(
+    hass, device_fan_1, device_fan_2, coordinator
+):
+    """Test the fan entity for a ZHA group."""
+    zha_gateway = get_zha_gateway(hass)
+    assert zha_gateway is not None
+    zha_gateway.coordinator_zha_device = coordinator
+    coordinator._zha_gateway = zha_gateway
+    device_fan_1._zha_gateway = zha_gateway
+    device_fan_2._zha_gateway = zha_gateway
+    member_ieee_addresses = [device_fan_1.ieee, device_fan_2.ieee]
+
+    # test creating a group with 2 members
+    zha_group = await zha_gateway.async_create_zigpy_group(
+        "Test Group", member_ieee_addresses
+    )
+    await hass.async_block_till_done()
+
+    assert zha_group is not None
+    assert len(zha_group.members) == 2
+    for member in zha_group.members:
+        assert member.ieee in member_ieee_addresses
+
+    entity_domains = GROUP_PROBE.determine_entity_domains(zha_group)
+    assert len(entity_domains) == 2
+
+    assert LIGHT_DOMAIN in entity_domains
+    assert DOMAIN in entity_domains
+
+    entity_id = async_find_group_entity_id(hass, DOMAIN, zha_group)
+    assert hass.states.get(entity_id) is not None
+
+    group_fan_cluster = zha_group.endpoint[hvac.Fan.cluster_id]
+    dev1_fan_cluster = device_fan_1.endpoints[1].fan
+    dev2_fan_cluster = device_fan_2.endpoints[1].fan
+
+    # test that the lights were created and that they are unavailable
+    assert hass.states.get(entity_id).state == STATE_UNAVAILABLE
+
+    # allow traffic to flow through the gateway and device
+    await async_enable_traffic(hass, zha_group.members)
+
+    # test that the fan group entity was created and is off
+    assert hass.states.get(entity_id).state == STATE_OFF
+
+    # turn on from HA
+    group_fan_cluster.write_attributes.reset_mock()
+    await async_turn_on(hass, entity_id)
+    assert len(group_fan_cluster.write_attributes.mock_calls) == 1
+    assert group_fan_cluster.write_attributes.call_args == call({"fan_mode": 2})
+    assert hass.states.get(entity_id).state == SPEED_MEDIUM
+
+    # turn off from HA
+    group_fan_cluster.write_attributes.reset_mock()
+    await async_turn_off(hass, entity_id)
+    assert len(group_fan_cluster.write_attributes.mock_calls) == 1
+    assert group_fan_cluster.write_attributes.call_args == call({"fan_mode": 0})
+    assert hass.states.get(entity_id).state == STATE_OFF
+
+    # change speed from HA
+    group_fan_cluster.write_attributes.reset_mock()
+    await async_set_speed(hass, entity_id, speed=fan.SPEED_HIGH)
+    assert len(group_fan_cluster.write_attributes.mock_calls) == 1
+    assert group_fan_cluster.write_attributes.call_args == call({"fan_mode": 3})
+    assert hass.states.get(entity_id).state == SPEED_HIGH
+
+    # test some of the group logic to make sure we key off states correctly
+    await dev1_fan_cluster.async_set_speed(SPEED_OFF)
+    await dev2_fan_cluster.async_set_speed(SPEED_OFF)
+
+    # test that group fan is off
+    assert hass.states.get(entity_id).state == STATE_OFF
+
+    await dev1_fan_cluster.async_set_speed(SPEED_MEDIUM)
+
+    # test that group fan is speed medium
+    assert hass.states.get(entity_id).state == SPEED_MEDIUM
+
+    await dev1_fan_cluster.async_set_speed(SPEED_OFF)
+
+    # test that group fan is now off
+    assert hass.states.get(entity_id).state == STATE_OFF
diff --git a/tests/components/zha/test_gateway.py b/tests/components/zha/test_gateway.py
index 3bb98522814..80d96fa55bd 100644
--- a/tests/components/zha/test_gateway.py
+++ b/tests/components/zha/test_gateway.py
@@ -134,7 +134,6 @@ async def test_gateway_group_methods(hass, device_light_1, device_light_2, coord
     await hass.async_block_till_done()
 
     assert zha_group is not None
-    assert zha_group.entity_domain == LIGHT_DOMAIN
     assert len(zha_group.members) == 2
     for member in zha_group.members:
         assert member.ieee in member_ieee_addresses
@@ -162,7 +161,6 @@ async def test_gateway_group_methods(hass, device_light_1, device_light_2, coord
     await hass.async_block_till_done()
 
     assert zha_group is not None
-    assert zha_group.entity_domain is None
     assert len(zha_group.members) == 1
     for member in zha_group.members:
         assert member.ieee in [device_light_1.ieee]
diff --git a/tests/components/zha/test_light.py b/tests/components/zha/test_light.py
index c6bafa45aea..f832b9e86e0 100644
--- a/tests/components/zha/test_light.py
+++ b/tests/components/zha/test_light.py
@@ -432,7 +432,6 @@ async def async_test_zha_group_light_entity(
     await hass.async_block_till_done()
 
     assert zha_group is not None
-    assert zha_group.entity_domain == DOMAIN
     assert len(zha_group.members) == 2
     for member in zha_group.members:
         assert member.ieee in member_ieee_addresses
diff --git a/tests/components/zha/test_switch.py b/tests/components/zha/test_switch.py
index adaaa7c2a2f..ed5d228ab88 100644
--- a/tests/components/zha/test_switch.py
+++ b/tests/components/zha/test_switch.py
@@ -173,7 +173,6 @@ async def async_test_zha_group_switch_entity(
     await hass.async_block_till_done()
 
     assert zha_group is not None
-    assert zha_group.entity_domain == DOMAIN
     assert len(zha_group.members) == 2
     for member in zha_group.members:
         assert member.ieee in member_ieee_addresses