diff --git a/pytec/pytec/gui/model/thermostat.py b/pytec/pytec/gui/model/thermostat.py
index e68f044..b66136d 100644
--- a/pytec/pytec/gui/model/thermostat.py
+++ b/pytec/pytec/gui/model/thermostat.py
@@ -128,7 +128,7 @@ class Thermostat(QObject, metaclass=PropertyMeta):
         self._update_s = update_s
 
     async def set_fan(self, power="auto"):
-        self._client.set_fan(power)
+        await self._client.set_fan(power)
 
     async def get_fan(self):
         return await self._client.get_fan()