From a21212ab7ebd54343957493ab86ccec16fb6e39e Mon Sep 17 00:00:00 2001
From: Pete Sage <76050312+PeteRager@users.noreply.github.com>
Date: Mon, 1 Jun 2026 18:27:50 -0400
Subject: [PATCH] Send midpoint of fan range for mapping devices for Z-Wave
 (#172562)

---
 homeassistant/components/zwave_js/fan.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/homeassistant/components/zwave_js/fan.py b/homeassistant/components/zwave_js/fan.py
index 4a2be4c6cb4c..ac320ee2e1ef 100644
--- a/homeassistant/components/zwave_js/fan.py
+++ b/homeassistant/components/zwave_js/fan.py
@@ -268,7 +268,9 @@ class ValueMappingZwaveFan(ZwaveFan):
         speed_level = math.ceil(
             percentage_to_ranged_value((1, self.speed_count), percentage)
         )
-        return self.fan_value_mapping.speeds[speed_level - 1][1]
+        min_speed, max_speed = self.fan_value_mapping.speeds[speed_level - 1]
+        # Use the midpoint rather than the range maximum for robustness.
+        return (min_speed + max_speed) // 2
 
     def zwave_speed_to_percentage(self, zwave_speed: int) -> int | None:
         """Convert a Zwave speed to a percentage.