diff --git a/homeassistant/components/zwave_js/climate.py b/homeassistant/components/zwave_js/climate.py
index 07119d365e0..e2bd69a1436 100644
--- a/homeassistant/components/zwave_js/climate.py
+++ b/homeassistant/components/zwave_js/climate.py
@@ -201,13 +201,25 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
         if self._fan_mode:
             self._attr_supported_features |= ClimateEntityFeature.FAN_MODE
 
-    def _setpoint_value(self, setpoint_type: ThermostatSetpointType) -> ZwaveValue:
-        """Optionally return a ZwaveValue for a setpoint."""
+    def _setpoint_value_or_raise(
+        self, setpoint_type: ThermostatSetpointType
+    ) -> ZwaveValue:
+        """Return a ZwaveValue for a setpoint or raise if not available."""
         if (val := self._setpoint_values[setpoint_type]) is None:
             raise ValueError("Value requested is not available")
 
         return val
 
+    def _setpoint_temperature(
+        self, setpoint_type: ThermostatSetpointType
+    ) -> float | None:
+        """Optionally return the temperature value of a setpoint."""
+        try:
+            temp = self._setpoint_value_or_raise(setpoint_type)
+        except (IndexError, ValueError):
+            return None
+        return get_value_of_zwave_value(temp)
+
     def _set_modes_and_presets(self) -> None:
         """Convert Z-Wave Thermostat modes into Home Assistant modes and presets."""
         all_modes: dict[HVACMode, int | None] = {}
@@ -290,36 +302,44 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
     @property
     def target_temperature(self) -> float | None:
         """Return the temperature we try to reach."""
-        if self._current_mode and self._current_mode.value is None:
+        if (
+            self._current_mode and self._current_mode.value is None
+        ) or not self._current_mode_setpoint_enums:
             # guard missing value
             return None
-        try:
-            temp = self._setpoint_value(self._current_mode_setpoint_enums[0])
-        except (IndexError, ValueError):
+        if len(self._current_mode_setpoint_enums) > 1:
+            # current mode has a temperature range
             return None
-        return get_value_of_zwave_value(temp)
+
+        return self._setpoint_temperature(self._current_mode_setpoint_enums[0])
 
     @property
     def target_temperature_high(self) -> float | None:
         """Return the highbound target temperature we try to reach."""
-        if self._current_mode and self._current_mode.value is None:
+        if (
+            self._current_mode and self._current_mode.value is None
+        ) or not self._current_mode_setpoint_enums:
             # guard missing value
             return None
-        try:
-            temp = self._setpoint_value(self._current_mode_setpoint_enums[1])
-        except (IndexError, ValueError):
+        if len(self._current_mode_setpoint_enums) < 2:
+            # current mode has a single temperature
             return None
-        return get_value_of_zwave_value(temp)
+
+        return self._setpoint_temperature(self._current_mode_setpoint_enums[1])
 
     @property
     def target_temperature_low(self) -> float | None:
         """Return the lowbound target temperature we try to reach."""
-        if self._current_mode and self._current_mode.value is None:
+        if (
+            self._current_mode and self._current_mode.value is None
+        ) or not self._current_mode_setpoint_enums:
             # guard missing value
             return None
-        if len(self._current_mode_setpoint_enums) > 1:
-            return self.target_temperature
-        return None
+        if len(self._current_mode_setpoint_enums) < 2:
+            # current mode has a single temperature
+            return None
+
+        return self._setpoint_temperature(self._current_mode_setpoint_enums[0])
 
     @property
     def preset_mode(self) -> str | None:
@@ -380,7 +400,7 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
         min_temp = DEFAULT_MIN_TEMP
         base_unit = TEMP_CELSIUS
         try:
-            temp = self._setpoint_value(self._current_mode_setpoint_enums[0])
+            temp = self._setpoint_value_or_raise(self._current_mode_setpoint_enums[0])
             if temp.metadata.min:
                 min_temp = temp.metadata.min
                 base_unit = self.temperature_unit
@@ -396,7 +416,7 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
         max_temp = DEFAULT_MAX_TEMP
         base_unit = TEMP_CELSIUS
         try:
-            temp = self._setpoint_value(self._current_mode_setpoint_enums[0])
+            temp = self._setpoint_value_or_raise(self._current_mode_setpoint_enums[0])
             if temp.metadata.max:
                 max_temp = temp.metadata.max
                 base_unit = self.temperature_unit
@@ -431,17 +451,17 @@ class ZWaveClimate(ZWaveBaseEntity, ClimateEntity):
         if hvac_mode is not None:
             await self.async_set_hvac_mode(hvac_mode)
         if len(self._current_mode_setpoint_enums) == 1:
-            setpoint: ZwaveValue = self._setpoint_value(
+            setpoint: ZwaveValue = self._setpoint_value_or_raise(
                 self._current_mode_setpoint_enums[0]
             )
             target_temp: float | None = kwargs.get(ATTR_TEMPERATURE)
             if target_temp is not None:
                 await self.info.node.async_set_value(setpoint, target_temp)
         elif len(self._current_mode_setpoint_enums) == 2:
-            setpoint_low: ZwaveValue = self._setpoint_value(
+            setpoint_low: ZwaveValue = self._setpoint_value_or_raise(
                 self._current_mode_setpoint_enums[0]
             )
-            setpoint_high: ZwaveValue = self._setpoint_value(
+            setpoint_high: ZwaveValue = self._setpoint_value_or_raise(
                 self._current_mode_setpoint_enums[1]
             )
             target_temp_low: float | None = kwargs.get(ATTR_TARGET_TEMP_LOW)
diff --git a/tests/components/zwave_js/test_climate.py b/tests/components/zwave_js/test_climate.py
index 755423e5e43..62dfacc7549 100644
--- a/tests/components/zwave_js/test_climate.py
+++ b/tests/components/zwave_js/test_climate.py
@@ -65,6 +65,8 @@ async def test_thermostat_v2(
     assert state.attributes[ATTR_CURRENT_HUMIDITY] == 30
     assert state.attributes[ATTR_CURRENT_TEMPERATURE] == 22.2
     assert state.attributes[ATTR_TEMPERATURE] == 22.2
+    assert state.attributes[ATTR_TARGET_TEMP_HIGH] is None
+    assert state.attributes[ATTR_TARGET_TEMP_LOW] is None
     assert state.attributes[ATTR_HVAC_ACTION] == HVACAction.IDLE
     assert state.attributes[ATTR_FAN_MODE] == "Auto low"
     assert state.attributes[ATTR_FAN_STATE] == "Idle / off"
@@ -159,6 +161,8 @@ async def test_thermostat_v2(
     state = hass.states.get(CLIMATE_RADIO_THERMOSTAT_ENTITY)
     assert state.state == HVACMode.COOL
     assert state.attributes[ATTR_TEMPERATURE] == 22.8
+    assert state.attributes[ATTR_TARGET_TEMP_HIGH] is None
+    assert state.attributes[ATTR_TARGET_TEMP_LOW] is None
 
     # Test heat_cool mode update from value updated event
     event = Event(
@@ -182,6 +186,7 @@ async def test_thermostat_v2(
 
     state = hass.states.get(CLIMATE_RADIO_THERMOSTAT_ENTITY)
     assert state.state == HVACMode.HEAT_COOL
+    assert state.attributes[ATTR_TEMPERATURE] is None
     assert state.attributes[ATTR_TARGET_TEMP_HIGH] == 22.8
     assert state.attributes[ATTR_TARGET_TEMP_LOW] == 22.2