diff --git a/homeassistant/components/mill/climate.py b/homeassistant/components/mill/climate.py
index cc720c49e37..4f700d24e1b 100644
--- a/homeassistant/components/mill/climate.py
+++ b/homeassistant/components/mill/climate.py
@@ -128,9 +128,6 @@ class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
         await self.coordinator.mill_data_connection.set_heater_temp(
             self._id, float(temperature)
         )
-        await self.coordinator.mill_data_connection.fetch_historic_energy_usage(
-            self._id
-        )
         await self.coordinator.async_request_refresh()
 
     async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
diff --git a/homeassistant/components/mill/const.py b/homeassistant/components/mill/const.py
index 25cbc0fcb91..c42747920bf 100644
--- a/homeassistant/components/mill/const.py
+++ b/homeassistant/components/mill/const.py
@@ -2,7 +2,6 @@
 
 ATTR_AWAY_TEMP = "away_temp"
 ATTR_COMFORT_TEMP = "comfort_temp"
-ATTR_MAX_HEATING_POWER = "max_heating_power"
 ATTR_ROOM_NAME = "room_name"
 ATTR_SLEEP_TEMP = "sleep_temp"
 BATTERY = "battery"