diff --git a/homeassistant/components/aosmith/icons.json b/homeassistant/components/aosmith/icons.json
new file mode 100644
index 00000000000..e31a68464ce
--- /dev/null
+++ b/homeassistant/components/aosmith/icons.json
@@ -0,0 +1,9 @@
+{
+  "entity": {
+    "sensor": {
+      "hot_water_availability": {
+        "default": "mdi:water-thermometer"
+      }
+    }
+  }
+}
diff --git a/homeassistant/components/aosmith/sensor.py b/homeassistant/components/aosmith/sensor.py
index e4a99a340de..e33c388af8b 100644
--- a/homeassistant/components/aosmith/sensor.py
+++ b/homeassistant/components/aosmith/sensor.py
@@ -33,7 +33,6 @@ STATUS_ENTITY_DESCRIPTIONS: tuple[AOSmithStatusSensorEntityDescription, ...] = (
     AOSmithStatusSensorEntityDescription(
         key="hot_water_availability",
         translation_key="hot_water_availability",
-        icon="mdi:water-thermometer",
         device_class=SensorDeviceClass.ENUM,
         options=["low", "medium", "high"],
         value_fn=lambda device: HOT_WATER_STATUS_MAP.get(
diff --git a/tests/components/aosmith/snapshots/test_sensor.ambr b/tests/components/aosmith/snapshots/test_sensor.ambr
index d4376c64a01..1b3043a7f3e 100644
--- a/tests/components/aosmith/snapshots/test_sensor.ambr
+++ b/tests/components/aosmith/snapshots/test_sensor.ambr
@@ -19,7 +19,6 @@
     'attributes': ReadOnlyDict({
       'device_class': 'enum',
       'friendly_name': 'My water heater Hot water availability',
-      'icon': 'mdi:water-thermometer',
       'options': list([
         'low',
         'medium',