diff --git a/source/_components/sensor.nest.markdown b/source/_components/sensor.nest.markdown
index 8cebddbd5d6..8087d51eb26 100644
--- a/source/_components/sensor.nest.markdown
+++ b/source/_components/sensor.nest.markdown
@@ -43,6 +43,7 @@ The following conditions are available by device:
   - operation\_mode
   - temperature
   - target
+  - hvac\_state: The currently active state of the HVAC system, `heating`, `cooling`, or `off`.
 - Nest Protect:
   - co\_status
   - smoke\_status