diff --git a/homeassistant/components/mill/climate.py b/homeassistant/components/mill/climate.py
index f1487ed59f1..1e578087b73 100644
--- a/homeassistant/components/mill/climate.py
+++ b/homeassistant/components/mill/climate.py
@@ -5,8 +5,6 @@ import mill
 import voluptuous as vol
 
 from homeassistant.components.climate import (
-    FAN_OFF,
-    FAN_ON,
     ClimateEntity,
     ClimateEntityFeature,
     HVACAction,
@@ -18,7 +16,7 @@ from homeassistant.const import (
     CONF_IP_ADDRESS,
     CONF_USERNAME,
     PRECISION_HALVES,
-    PRECISION_WHOLE,
+    PRECISION_TENTHS,
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant, ServiceCall, callback
@@ -90,11 +88,13 @@ async def async_setup_entry(
 class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
     """Representation of a Mill Thermostat device."""
 
-    _attr_fan_modes = [FAN_ON, FAN_OFF]
     _attr_has_entity_name = True
+    _attr_hvac_modes = [HVACMode.HEAT, HVACMode.OFF]
     _attr_max_temp = MAX_TEMP
     _attr_min_temp = MIN_TEMP
     _attr_name = None
+    _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
+    _attr_target_temperature_step = PRECISION_TENTHS
     _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(
@@ -111,22 +111,9 @@ class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
         self._attr_device_info = DeviceInfo(
             identifiers={(DOMAIN, heater.device_id)},
             manufacturer=MANUFACTURER,
-            model=f"Generation {heater.generation}",
+            model=heater.model,
             name=heater.name,
         )
-        if heater.is_gen1:
-            self._attr_hvac_modes = [HVACMode.HEAT]
-        else:
-            self._attr_hvac_modes = [HVACMode.HEAT, HVACMode.OFF]
-
-        if heater.generation < 3:
-            self._attr_supported_features = (
-                ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.FAN_MODE
-            )
-            self._attr_target_temperature_step = PRECISION_WHOLE
-        else:
-            self._attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
-            self._attr_target_temperature_step = PRECISION_HALVES
 
         self._update_attr(heater)
 
@@ -139,26 +126,16 @@ class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
         )
         await self.coordinator.async_request_refresh()
 
-    async def async_set_fan_mode(self, fan_mode: str) -> None:
-        """Set new target fan mode."""
-        fan_status = 1 if fan_mode == FAN_ON else 0
-        await self.coordinator.mill_data_connection.heater_control(
-            self._id, fan_status=fan_status
-        )
-        await self.coordinator.async_request_refresh()
-
     async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set new target hvac mode."""
-        heater = self.coordinator.data[self._id]
-
         if hvac_mode == HVACMode.HEAT:
             await self.coordinator.mill_data_connection.heater_control(
-                self._id, power_status=1
+                self._id, power_status=True
             )
             await self.coordinator.async_request_refresh()
-        elif hvac_mode == HVACMode.OFF and not heater.is_gen1:
+        elif hvac_mode == HVACMode.OFF:
             await self.coordinator.mill_data_connection.heater_control(
-                self._id, power_status=0
+                self._id, power_status=False
             )
             await self.coordinator.async_request_refresh()
 
@@ -178,23 +155,20 @@ class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
         self._available = heater.available
         self._attr_extra_state_attributes = {
             "open_window": heater.open_window,
-            "heating": heater.is_heating,
             "controlled_by_tibber": heater.tibber_control,
-            "heater_generation": heater.generation,
         }
-        if heater.room:
-            self._attr_extra_state_attributes["room"] = heater.room.name
-            self._attr_extra_state_attributes["avg_room_temp"] = heater.room.avg_temp
+        if heater.room_name:
+            self._attr_extra_state_attributes["room"] = heater.room_name
+            self._attr_extra_state_attributes["avg_room_temp"] = heater.room_avg_temp
         else:
             self._attr_extra_state_attributes["room"] = "Independent device"
         self._attr_target_temperature = heater.set_temp
         self._attr_current_temperature = heater.current_temp
-        self._attr_fan_mode = FAN_ON if heater.fan_status == 1 else HVACMode.OFF
-        if heater.is_heating == 1:
+        if heater.is_heating:
             self._attr_hvac_action = HVACAction.HEATING
         else:
             self._attr_hvac_action = HVACAction.IDLE
-        if heater.is_gen1 or heater.power_status == 1:
+        if heater.power_status:
             self._attr_hvac_mode = HVACMode.HEAT
         else:
             self._attr_hvac_mode = HVACMode.OFF
diff --git a/homeassistant/components/mill/manifest.json b/homeassistant/components/mill/manifest.json
index 0666c1107ca..66a358648fd 100644
--- a/homeassistant/components/mill/manifest.json
+++ b/homeassistant/components/mill/manifest.json
@@ -6,5 +6,5 @@
   "documentation": "https://www.home-assistant.io/integrations/mill",
   "iot_class": "local_polling",
   "loggers": ["mill", "mill_local"],
-  "requirements": ["millheater==0.10.0", "mill-local==0.2.0"]
+  "requirements": ["millheater==0.11.0", "mill-local==0.2.0"]
 }
diff --git a/homeassistant/components/mill/sensor.py b/homeassistant/components/mill/sensor.py
index a915418bb93..843e8b6570e 100644
--- a/homeassistant/components/mill/sensor.py
+++ b/homeassistant/components/mill/sensor.py
@@ -172,13 +172,10 @@ class MillSensor(CoordinatorEntity, SensorEntity):
         self._attr_unique_id = f"{mill_device.device_id}_{entity_description.key}"
         self._attr_device_info = DeviceInfo(
             identifiers={(DOMAIN, mill_device.device_id)},
-            name=self.name,
+            name=mill_device.name,
             manufacturer=MANUFACTURER,
+            model=mill_device.model,
         )
-        if isinstance(mill_device, mill.Heater):
-            self._attr_device_info["model"] = f"Generation {mill_device.generation}"
-        elif isinstance(mill_device, mill.Sensor):
-            self._attr_device_info["model"] = "Mill Sense Air"
         self._update_attr(mill_device)
 
     @callback
diff --git a/requirements_all.txt b/requirements_all.txt
index 965b0912d7a..645dcf3fde0 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1207,7 +1207,7 @@ micloud==0.5
 mill-local==0.2.0
 
 # homeassistant.components.mill
-millheater==0.10.0
+millheater==0.11.0
 
 # homeassistant.components.minio
 minio==7.1.12
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index bf3054f9db0..c8e3c0e76e8 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -924,7 +924,7 @@ micloud==0.5
 mill-local==0.2.0
 
 # homeassistant.components.mill
-millheater==0.10.0
+millheater==0.11.0
 
 # homeassistant.components.minio
 minio==7.1.12