diff --git a/homeassistant/components/overkiz/climate/hitachi_air_to_water_heating_zone.py b/homeassistant/components/overkiz/climate/hitachi_air_to_water_heating_zone.py
index 8410e50873d..c5465128bba 100644
--- a/homeassistant/components/overkiz/climate/hitachi_air_to_water_heating_zone.py
+++ b/homeassistant/components/overkiz/climate/hitachi_air_to_water_heating_zone.py
@@ -119,5 +119,5 @@ class HitachiAirToWaterHeatingZone(OverkizEntity, ClimateEntity):
         temperature = cast(float, kwargs.get(ATTR_TEMPERATURE))
 
         await self.executor.async_execute_command(
-            OverkizCommand.SET_THERMOSTAT_SETTING_CONTROL_ZONE_1, int(temperature)
+            OverkizCommand.SET_THERMOSTAT_SETTING_CONTROL_ZONE_1, float(temperature)
         )