diff --git a/homeassistant/components/guardian/__init__.py b/homeassistant/components/guardian/__init__.py
index b07d8ec5b3f..3707bf9d2eb 100644
--- a/homeassistant/components/guardian/__init__.py
+++ b/homeassistant/components/guardian/__init__.py
@@ -409,7 +409,7 @@ class PairedSensorEntity(GuardianEntity):
             identifiers={(DOMAIN, paired_sensor_uid)},
             manufacturer="Elexa",
             model=coordinator.data["codename"],
-            name=f"Guardian Paired Sensor {paired_sensor_uid}",
+            name=f"Guardian paired sensor {paired_sensor_uid}",
             via_device=(DOMAIN, entry.data[CONF_UID]),
         )
         self._attr_unique_id = f"{paired_sensor_uid}_{description.key}"
@@ -436,7 +436,7 @@ class ValveControllerEntity(GuardianEntity):
             identifiers={(DOMAIN, entry.data[CONF_UID])},
             manufacturer="Elexa",
             model=coordinators[API_SYSTEM_DIAGNOSTICS].data["firmware"],
-            name=f"Guardian Valve Controller {entry.data[CONF_UID]}",
+            name=f"Guardian valve controller {entry.data[CONF_UID]}",
         )
         self._attr_unique_id = f"{entry.data[CONF_UID]}_{description.key}"
         self.coordinators = coordinators
diff --git a/homeassistant/components/guardian/binary_sensor.py b/homeassistant/components/guardian/binary_sensor.py
index 1d7195a8f17..dc9febcfa91 100644
--- a/homeassistant/components/guardian/binary_sensor.py
+++ b/homeassistant/components/guardian/binary_sensor.py
@@ -32,18 +32,18 @@ SENSOR_KIND_MOVED = "moved"
 
 SENSOR_DESCRIPTION_AP_ENABLED = BinarySensorEntityDescription(
     key=SENSOR_KIND_AP_INFO,
-    name="Onboard AP Enabled",
+    name="Onboard AP enabled",
     device_class=BinarySensorDeviceClass.CONNECTIVITY,
     entity_category=EntityCategory.DIAGNOSTIC,
 )
 SENSOR_DESCRIPTION_LEAK_DETECTED = BinarySensorEntityDescription(
     key=SENSOR_KIND_LEAK_DETECTED,
-    name="Leak Detected",
+    name="Leak detected",
     device_class=BinarySensorDeviceClass.MOISTURE,
 )
 SENSOR_DESCRIPTION_MOVED = BinarySensorEntityDescription(
     key=SENSOR_KIND_MOVED,
-    name="Recently Moved",
+    name="Recently moved",
     device_class=BinarySensorDeviceClass.MOVING,
     entity_category=EntityCategory.DIAGNOSTIC,
 )
diff --git a/homeassistant/components/guardian/switch.py b/homeassistant/components/guardian/switch.py
index 9a4f70fd3d2..485b0a3ffbc 100644
--- a/homeassistant/components/guardian/switch.py
+++ b/homeassistant/components/guardian/switch.py
@@ -25,7 +25,7 @@ SWITCH_KIND_VALVE = "valve"
 
 SWITCH_DESCRIPTION_VALVE = SwitchEntityDescription(
     key=SWITCH_KIND_VALVE,
-    name="Valve Controller",
+    name="Valve controller",
     icon="mdi:water",
 )