diff --git a/homeassistant/components/fibaro/climate.py b/homeassistant/components/fibaro/climate.py
index 8607d2c681a..0323f9dabd2 100644
--- a/homeassistant/components/fibaro/climate.py
+++ b/homeassistant/components/fibaro/climate.py
@@ -159,7 +159,8 @@ class FibaroThermostat(FibaroDevice, ClimateEntity):
             ):
                 self._target_temp_device = FibaroDevice(device)
                 self._attr_supported_features |= ClimateEntityFeature.TARGET_TEMPERATURE
-                tempunit = device.properties.unit
+                if "unit" in device.properties:
+                    tempunit = device.properties.unit
 
             if any(action for action in OP_MODE_ACTIONS if action in device.actions):
                 self._op_mode_device = FibaroDevice(device)