diff --git a/wideq/ac.py b/wideq/ac.py
index a76a297..257e1e3 100644
--- a/wideq/ac.py
+++ b/wideq/ac.py
@@ -72,6 +72,7 @@ class ACFanSpeed(enum.Enum):
     HIGH = '@AC_MAIN_WIND_STRENGTH_HIGH_W'
     POWER = '@AC_MAIN_WIND_STRENGTH_POWER_W'
     AUTO = '@AC_MAIN_WIND_STRENGTH_AUTO_W'
+    NATURE = '@AC_MAIN_WIND_STRENGTH_NATURE_W'
 
 
 class ACOp(enum.Enum):