diff --git a/homeassistant/components/climate/eq3btsmart.py b/homeassistant/components/climate/eq3btsmart.py
index a8ab9bd30b2..6587ad86300 100644
--- a/homeassistant/components/climate/eq3btsmart.py
+++ b/homeassistant/components/climate/eq3btsmart.py
@@ -76,6 +76,11 @@ class EQ3BTSmartThermostat(ClimateDevice):
         self._name = _name
         self._thermostat = eq3.Thermostat(_mac)
 
+    @property
+    def available(self) -> bool:
+        """Return if thermostat is available."""
+        return self.current_operation != STATE_UNKNOWN
+
     @property
     def name(self):
         """Return the name of the device."""