diff --git a/homeassistant/components/mill/climate.py b/homeassistant/components/mill/climate.py
index a5e59b4f8ec..d0b15f5d8ff 100644
--- a/homeassistant/components/mill/climate.py
+++ b/homeassistant/components/mill/climate.py
@@ -92,7 +92,11 @@ class MillHeater(CoordinatorEntity[MillDataUpdateCoordinator], ClimateEntity):
     _attr_max_temp = MAX_TEMP
     _attr_min_temp = MIN_TEMP
     _attr_name = None
-    _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
+    _attr_supported_features = (
+        ClimateEntityFeature.TARGET_TEMPERATURE
+        | ClimateEntityFeature.TURN_OFF
+        | ClimateEntityFeature.TURN_ON
+    )
     _attr_target_temperature_step = PRECISION_TENTHS
     _attr_temperature_unit = UnitOfTemperature.CELSIUS