diff --git a/.coveragerc b/.coveragerc
index f394a1729bf..b0f3baf33cc 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1094,6 +1094,7 @@ omit =
     homeassistant/components/todoist/const.py
     homeassistant/components/tof/sensor.py
     homeassistant/components/tolo/__init__.py
+    homeassistant/components/tolo/binary_sensor.py
     homeassistant/components/tolo/button.py
     homeassistant/components/tolo/climate.py
     homeassistant/components/tolo/light.py
diff --git a/homeassistant/components/tolo/__init__.py b/homeassistant/components/tolo/__init__.py
index 02fece7b3b9..3776c4bd61c 100644
--- a/homeassistant/components/tolo/__init__.py
+++ b/homeassistant/components/tolo/__init__.py
@@ -22,7 +22,7 @@ from homeassistant.helpers.update_coordinator import (
 
 from .const import DEFAULT_RETRY_COUNT, DEFAULT_RETRY_TIMEOUT, DOMAIN
 
-PLATFORMS = ["button", "climate", "light", "select", "sensor"]
+PLATFORMS = ["binary_sensor", "button", "climate", "light", "select", "sensor"]
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/tolo/binary_sensor.py b/homeassistant/components/tolo/binary_sensor.py
new file mode 100644
index 00000000000..777e2f16942
--- /dev/null
+++ b/homeassistant/components/tolo/binary_sensor.py
@@ -0,0 +1,72 @@
+"""TOLO Sauna binary sensors."""
+
+from homeassistant.components.binary_sensor import (
+    DEVICE_CLASS_OPENING,
+    BinarySensorEntity,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import ENTITY_CATEGORY_DIAGNOSTIC
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import ToloSaunaCoordinatorEntity, ToloSaunaUpdateCoordinator
+from .const import DOMAIN
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up binary sensors for TOLO Sauna."""
+    coordinator = hass.data[DOMAIN][entry.entry_id]
+    async_add_entities(
+        [
+            ToloFlowInBinarySensor(coordinator, entry),
+            ToloFlowOutBinarySensor(coordinator, entry),
+        ]
+    )
+
+
+class ToloFlowInBinarySensor(ToloSaunaCoordinatorEntity, BinarySensorEntity):
+    """Water In Valve Sensor."""
+
+    _attr_entity_category = ENTITY_CATEGORY_DIAGNOSTIC
+    _attr_name = "Water In Valve"
+    _attr_device_class = DEVICE_CLASS_OPENING
+    _attr_icon = "mdi:water-plus-outline"
+
+    def __init__(
+        self, coordinator: ToloSaunaUpdateCoordinator, entry: ConfigEntry
+    ) -> None:
+        """Initialize TOLO Water In Valve entity."""
+        super().__init__(coordinator, entry)
+
+        self._attr_unique_id = f"{entry.entry_id}_flow_in"
+
+    @property
+    def is_on(self) -> bool:
+        """Return if flow in valve is open."""
+        return self.coordinator.data.status.flow_in
+
+
+class ToloFlowOutBinarySensor(ToloSaunaCoordinatorEntity, BinarySensorEntity):
+    """Water Out Valve Sensor."""
+
+    _attr_entity_category = ENTITY_CATEGORY_DIAGNOSTIC
+    _attr_name = "Water Out Valve"
+    _attr_device_class = DEVICE_CLASS_OPENING
+    _attr_icon = "mdi:water-minus-outline"
+
+    def __init__(
+        self, coordinator: ToloSaunaUpdateCoordinator, entry: ConfigEntry
+    ) -> None:
+        """Initialize TOLO Water Out Valve entity."""
+        super().__init__(coordinator, entry)
+
+        self._attr_unique_id = f"{entry.entry_id}_flow_out"
+
+    @property
+    def is_on(self) -> bool:
+        """Return if flow out valve is open."""
+        return self.coordinator.data.status.flow_out