diff --git a/homeassistant/components/binary_sensor/__init__.py b/homeassistant/components/binary_sensor/__init__.py
index f022509f9d..0ab1987e66 100644
--- a/homeassistant/components/binary_sensor/__init__.py
+++ b/homeassistant/components/binary_sensor/__init__.py
@@ -28,6 +28,9 @@ DEVICE_CLASS_BATTERY = "battery"
 # On means charging, Off means not charging
 DEVICE_CLASS_BATTERY_CHARGING = "battery_charging"
 
+# On means clean, Off means dirty
+DEVICE_CLASS_CLEAN = "clean"
+
 # On means cold, Off means normal
 DEVICE_CLASS_COLD = "cold"
 
@@ -97,6 +100,7 @@ DEVICE_CLASS_WINDOW = "window"
 DEVICE_CLASSES = [
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_BATTERY_CHARGING,
+    DEVICE_CLASS_CLEAN,
     DEVICE_CLASS_COLD,
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_DOOR,
diff --git a/homeassistant/components/binary_sensor/device_condition.py b/homeassistant/components/binary_sensor/device_condition.py
index 999a62b3a8..89d469cf5c 100644
--- a/homeassistant/components/binary_sensor/device_condition.py
+++ b/homeassistant/components/binary_sensor/device_condition.py
@@ -16,6 +16,7 @@ from homeassistant.helpers.typing import ConfigType
 from . import (
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_BATTERY_CHARGING,
+    DEVICE_CLASS_CLEAN,
     DEVICE_CLASS_COLD,
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_DOOR,
@@ -47,6 +48,8 @@ CONF_IS_BAT_LOW = "is_bat_low"
 CONF_IS_NOT_BAT_LOW = "is_not_bat_low"
 CONF_IS_CHARGING = "is_charging"
 CONF_IS_NOT_CHARGING = "is_not_charging"
+CONF_IS_CLEAN = "is_clean"
+CONF_IS_NOT_CLEAN = "is_not_clean"
 CONF_IS_COLD = "is_cold"
 CONF_IS_NOT_COLD = "is_not_cold"
 CONF_IS_CONNECTED = "is_connected"
@@ -89,6 +92,7 @@ CONF_IS_NOT_OPEN = "is_not_open"
 IS_ON = [
     CONF_IS_BAT_LOW,
     CONF_IS_CHARGING,
+    CONF_IS_CLEAN,
     CONF_IS_COLD,
     CONF_IS_CONNECTED,
     CONF_IS_GAS,
@@ -114,6 +118,7 @@ IS_ON = [
 IS_OFF = [
     CONF_IS_NOT_BAT_LOW,
     CONF_IS_NOT_CHARGING,
+    CONF_IS_NOT_CLEAN,
     CONF_IS_NOT_COLD,
     CONF_IS_NOT_CONNECTED,
     CONF_IS_NOT_HOT,
@@ -145,6 +150,7 @@ ENTITY_CONDITIONS = {
         {CONF_TYPE: CONF_IS_CHARGING},
         {CONF_TYPE: CONF_IS_NOT_CHARGING},
     ],
+    DEVICE_CLASS_CLEAN: [{CONF_TYPE: CONF_IS_CLEAN}, {CONF_TYPE: CONF_IS_NOT_CLEAN}],
     DEVICE_CLASS_COLD: [{CONF_TYPE: CONF_IS_COLD}, {CONF_TYPE: CONF_IS_NOT_COLD}],
     DEVICE_CLASS_CONNECTIVITY: [
         {CONF_TYPE: CONF_IS_CONNECTED},
diff --git a/homeassistant/components/binary_sensor/device_trigger.py b/homeassistant/components/binary_sensor/device_trigger.py
index f7f0c53a69..d2738c156d 100644
--- a/homeassistant/components/binary_sensor/device_trigger.py
+++ b/homeassistant/components/binary_sensor/device_trigger.py
@@ -14,6 +14,7 @@ from homeassistant.helpers.entity_registry import async_entries_for_device
 from . import (
     DEVICE_CLASS_BATTERY,
     DEVICE_CLASS_BATTERY_CHARGING,
+    DEVICE_CLASS_CLEAN,
     DEVICE_CLASS_COLD,
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_DOOR,
@@ -47,6 +48,8 @@ CONF_BAT_LOW = "bat_low"
 CONF_NOT_BAT_LOW = "not_bat_low"
 CONF_CHARGING = "charging"
 CONF_NOT_CHARGING = "not_charging"
+CONF_CLEAN = "clean"
+CONF_NOT_CLEAN = "not_clean"
 CONF_COLD = "cold"
 CONF_NOT_COLD = "not_cold"
 CONF_CONNECTED = "connected"
@@ -89,6 +92,7 @@ CONF_NOT_OPENED = "not_opened"
 
 TURNED_ON = [
     CONF_BAT_LOW,
+    CONF_CLEAN,
     CONF_COLD,
     CONF_CONNECTED,
     CONF_GAS,
@@ -113,6 +117,7 @@ TURNED_ON = [
 
 TURNED_OFF = [
     CONF_NOT_BAT_LOW,
+    CONF_NO_CLEAN,
     CONF_NOT_COLD,
     CONF_NOT_CONNECTED,
     CONF_NOT_HOT,
@@ -142,6 +147,7 @@ ENTITY_TRIGGERS = {
         {CONF_TYPE: CONF_CHARGING},
         {CONF_TYPE: CONF_NOT_CHARGING},
     ],
+    DEVICE_CLASS_CLEAN: [{CONF_TYPE: CONF_CLEAN}, {CONF_TYPE: CONF_NOT_CLEAN}],
     DEVICE_CLASS_COLD: [{CONF_TYPE: CONF_COLD}, {CONF_TYPE: CONF_NOT_COLD}],
     DEVICE_CLASS_CONNECTIVITY: [
         {CONF_TYPE: CONF_CONNECTED},
diff --git a/homeassistant/components/binary_sensor/strings.json b/homeassistant/components/binary_sensor/strings.json
index 045fcdae70..1167729ab7 100644
--- a/homeassistant/components/binary_sensor/strings.json
+++ b/homeassistant/components/binary_sensor/strings.json
@@ -4,6 +4,8 @@
     "condition_type": {
       "is_bat_low": "{entity_name} battery is low",
       "is_not_bat_low": "{entity_name} battery is normal",
+      "is_clean": "{entity_name} is clean",
+      "is_not_clean": "{entity_name} is not clean",
       "is_cold": "{entity_name} is cold",
       "is_not_cold": "{entity_name} is not cold",
       "is_connected": "{entity_name} is connected",
@@ -48,6 +50,8 @@
     "trigger_type": {
       "bat_low": "{entity_name} battery low",
       "not_bat_low": "{entity_name} battery normal",
+      "clean": "{entity_name} got clean",
+      "not_clean": "{entity_name} became dirty",
       "cold": "{entity_name} became cold",
       "not_cold": "{entity_name} became not cold",
       "connected": "{entity_name} connected",
@@ -95,6 +99,10 @@
       "off": "Normal",
       "on": "Low"
     },
+    "clean": {
+      "off": "Dirty",
+      "on": "Clean"
+    },
     "cold": {
       "off": "[%key:component::binary_sensor::state::battery::off%]",
       "on": "Cold"
diff --git a/homeassistant/components/binary_sensor/translations/pt.json b/homeassistant/components/binary_sensor/translations/pt.json
index cedcdc2732..4a628aac14 100644
--- a/homeassistant/components/binary_sensor/translations/pt.json
+++ b/homeassistant/components/binary_sensor/translations/pt.json
@@ -2,6 +2,8 @@
     "device_automation": {
         "condition_type": {
             "is_bat_low": "a bateria {entity_name} est\u00e1 baixa",
+            "is_clean": "{entity_name} est\u00e1 limpo",
+            "is_not_clean": "{entity_name} est\u00e1 sujo",
             "is_cold": "{entity_name} est\u00e1 frio",
             "is_connected": "{entity_name} est\u00e1 ligado",
             "is_gas": "{entity_name} est\u00e1 a detectar g\u00e1s",
@@ -46,6 +48,8 @@
         },
         "trigger_type": {
             "bat_low": "{entity_name} com bateria fraca",
+            "clean": "{entity_name} ficou limpo",
+            "not_clean": "{entity_name} ficou sujo",
             "cold": "{entity_name} ficou frio",
             "connected": "{entity_name} est\u00e1 ligado",
             "gas": "{entity_name} detectou g\u00e1s",
@@ -98,6 +102,10 @@
             "off": "Normal",
             "on": "Baixo"
         },
+        "clean": {
+            "off": "Sujo",
+            "on": "Limpo"
+        },
         "cold": {
             "off": "Normal",
             "on": "Frio"
@@ -172,4 +180,4 @@
         }
     },
     "title": "Sensor bin\u00e1rio"
-}
\ No newline at end of file
+}
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 9f92d11e4c..51a83a05fb 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -217,6 +217,7 @@ EVENT_TIME_CHANGED = "time_changed"
 
 # #### DEVICE CLASSES ####
 DEVICE_CLASS_BATTERY = "battery"
+DEVICE_CLASS_CLEAN = "clean"
 DEVICE_CLASS_HUMIDITY = "humidity"
 DEVICE_CLASS_ILLUMINANCE = "illuminance"
 DEVICE_CLASS_SIGNAL_STRENGTH = "signal_strength"