diff --git a/apps/global/heating.yaml b/apps/global/heating.yaml
index 6823da8..dd4cee0 100644
--- a/apps/global/heating.yaml
+++ b/apps/global/heating.yaml
@@ -115,7 +115,7 @@ bedroom_heatpump:
         auto: binary_sensor.heatpump_winter_mode or room_temperature > target_temperature + 1
         quiet: True
 
-  target_temperature: sensor.target_temperature_heatpump  - 0.5
+  target_temperature: "sensor.target_temperature_heatpump  - (binary_sensor.heatpump_winter_mode ? 1 : 0.5)"
   hvac_mode: "binary_sensor.heatpump_winter_mode ? 'heat' : 'cool'"
   fan_mode: sensor.bedroom_heatpump_fan_mode