diff --git a/kasa/bulb.py b/kasa/bulb.py
@@ -7,6 +7,8 @@
 
 from pydantic.v1 import BaseModel
 
+from .device import Device
+
 
 class ColorTempRange(NamedTuple):
     """Color temperature range."""
@@ -40,7 +42,7 @@ class BulbPreset(BaseModel):
     mode: Optional[int]  # noqa: UP007
 
 
-class Bulb(ABC):
+class Bulb(Device, ABC):
     """Base class for TP-Link Bulb."""
 
     def _raise_for_invalid_brightness(self, value):

diff --git a/kasa/device.py b/kasa/device.py
@@ -245,6 +245,11 @@ def is_dimmable(self) -> bool:
         """Return  True if the device is dimmable."""
         return False
 
+    @property
+    def is_fan(self) -> bool:
+        """Return True if the device is a fan."""
+        return self.device_type == DeviceType.Fan
+
     @property
     def is_variable_color_temp(self) -> bool:
         """Return True if the device supports color temperature."""

diff --git a/kasa/fan.py b/kasa/fan.py
@@ -4,14 +4,11 @@
 
 from abc import ABC, abstractmethod
 
+from .device import Device
 
-class Fan(ABC):
-    """Interface for a Fan."""
 
-    @property
-    @abstractmethod
-    def is_fan(self) -> bool:
-        """Return True if the device is a fan."""
+class Fan(Device, ABC):
+    """Interface for a Fan."""
 
     @property
     @abstractmethod

diff --git a/kasa/smart/smartdevice.py b/kasa/smart/smartdevice.py
@@ -46,7 +46,9 @@
 }
 
 
-class SmartDevice(Device, Bulb, Fan):
+# Device must go last as the other interfaces also inherit Device
+# and python needs a consistent method resolution order.
+class SmartDevice(Bulb, Fan, Device):
     """Base class to represent a SMART protocol based device."""
 
     def __init__(