diff --git a/homeassistant/components/zwave_js/climate.py b/homeassistant/components/zwave_js/climate.py
index 1a15c45049b..ceb46982949 100644
--- a/homeassistant/components/zwave_js/climate.py
+++ b/homeassistant/components/zwave_js/climate.py
@@ -287,7 +287,12 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
     @property
     def target_temperature_low(self) -> Optional[float]:
         """Return the lowbound target temperature we try to reach."""
-        return self.target_temperature
+        if self._current_mode and self._current_mode.value is None:
+            # guard missing value
+            return None
+        if len(self._current_mode_setpoint_enums) > 1:
+            return self.target_temperature
+        return None
 
     @property
     def preset_mode(self) -> Optional[str]: