diff --git a/homeassistant/components/venstar/climate.py b/homeassistant/components/venstar/climate.py
index 41cf1347076..45bb77518c9 100644
--- a/homeassistant/components/venstar/climate.py
+++ b/homeassistant/components/venstar/climate.py
@@ -3,27 +3,18 @@ from __future__ import annotations
 
 import voluptuous as vol
 
-from homeassistant.components.climate import (
-    PLATFORM_SCHEMA,
-    ClimateEntity,
-    ClimateEntityFeature,
-)
+from homeassistant.components.climate import PLATFORM_SCHEMA, ClimateEntity
 from homeassistant.components.climate.const import (
     ATTR_HVAC_MODE,
     ATTR_TARGET_TEMP_HIGH,
     ATTR_TARGET_TEMP_LOW,
-    CURRENT_HVAC_COOL,
-    CURRENT_HVAC_HEAT,
-    CURRENT_HVAC_IDLE,
-    CURRENT_HVAC_OFF,
     FAN_AUTO,
     FAN_ON,
-    HVAC_MODE_AUTO,
-    HVAC_MODE_COOL,
-    HVAC_MODE_HEAT,
-    HVAC_MODE_OFF,
     PRESET_AWAY,
     PRESET_NONE,
+    ClimateEntityFeature,
+    HVACAction,
+    HVACMode,
 )
 from homeassistant.config_entries import SOURCE_IMPORT, ConfigEntry
 from homeassistant.const import (
@@ -115,6 +106,8 @@ async def async_setup_platform(
 class VenstarThermostat(VenstarEntity, ClimateEntity):
     """Representation of a Venstar thermostat."""
 
+    _attr_hvac_modes = VALID_THERMOSTAT_MODES
+
     def __init__(
         self,
         venstar_data_coordinator: VenstarDataUpdateCoordinator,
@@ -123,9 +116,9 @@ class VenstarThermostat(VenstarEntity, ClimateEntity):
         """Initialize the thermostat."""
         super().__init__(venstar_data_coordinator, config)
         self._mode_map = {
-            HVAC_MODE_HEAT: self._client.MODE_HEAT,
-            HVAC_MODE_COOL: self._client.MODE_COOL,
-            HVAC_MODE_AUTO: self._client.MODE_AUTO,
+            HVACMode.HEAT: self._client.MODE_HEAT,
+            HVACMode.COOL: self._client.MODE_COOL,
+            HVACMode.AUTO: self._client.MODE_AUTO,
         }
         self._attr_unique_id = config.entry_id
         self._attr_name = self._client.name
@@ -168,11 +161,6 @@ class VenstarThermostat(VenstarEntity, ClimateEntity):
         """Return the list of available fan modes."""
         return VALID_FAN_STATES
 
-    @property
-    def hvac_modes(self):
-        """Return the list of available operation modes."""
-        return VALID_THERMOSTAT_MODES
-
     @property
     def current_temperature(self):
         """Return the current temperature."""
@@ -184,26 +172,26 @@ class VenstarThermostat(VenstarEntity, ClimateEntity):
         return self._client.get_indoor_humidity()
 
     @property
-    def hvac_mode(self):
+    def hvac_mode(self) -> HVACMode:
         """Return current operation mode ie. heat, cool, auto."""
         if self._client.mode == self._client.MODE_HEAT:
-            return HVAC_MODE_HEAT
+            return HVACMode.HEAT
         if self._client.mode == self._client.MODE_COOL:
-            return HVAC_MODE_COOL
+            return HVACMode.COOL
         if self._client.mode == self._client.MODE_AUTO:
-            return HVAC_MODE_AUTO
-        return HVAC_MODE_OFF
+            return HVACMode.AUTO
+        return HVACMode.OFF
 
     @property
-    def hvac_action(self):
+    def hvac_action(self) -> HVACAction:
         """Return current operation mode ie. heat, cool, auto."""
         if self._client.state == self._client.STATE_IDLE:
-            return CURRENT_HVAC_IDLE
+            return HVACAction.IDLE
         if self._client.state == self._client.STATE_HEATING:
-            return CURRENT_HVAC_HEAT
+            return HVACAction.HEATING
         if self._client.state == self._client.STATE_COOLING:
-            return CURRENT_HVAC_COOL
-        return CURRENT_HVAC_OFF
+            return HVACAction.COOLING
+        return HVACAction.OFF
 
     @property
     def fan_mode(self):
@@ -272,13 +260,13 @@ class VenstarThermostat(VenstarEntity, ClimateEntity):
         """Return valid preset modes."""
         return [PRESET_NONE, PRESET_AWAY, HOLD_MODE_TEMPERATURE]
 
-    def _set_operation_mode(self, operation_mode):
+    def _set_operation_mode(self, operation_mode: HVACMode):
         """Change the operation mode (internal)."""
-        if operation_mode == HVAC_MODE_HEAT:
+        if operation_mode == HVACMode.HEAT:
             success = self._client.set_mode(self._client.MODE_HEAT)
-        elif operation_mode == HVAC_MODE_COOL:
+        elif operation_mode == HVACMode.COOL:
             success = self._client.set_mode(self._client.MODE_COOL)
-        elif operation_mode == HVAC_MODE_AUTO:
+        elif operation_mode == HVACMode.AUTO:
             success = self._client.set_mode(self._client.MODE_AUTO)
         else:
             success = self._client.set_mode(self._client.MODE_OFF)
@@ -337,7 +325,7 @@ class VenstarThermostat(VenstarEntity, ClimateEntity):
             _LOGGER.error("Failed to change the fan mode")
         self.schedule_update_ha_state()
 
-    def set_hvac_mode(self, hvac_mode):
+    def set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set new target operation mode."""
         self._set_operation_mode(hvac_mode)
         self.schedule_update_ha_state()
diff --git a/tests/components/venstar/test_climate.py b/tests/components/venstar/test_climate.py
index fe1e6141c98..15b5d4df7b5 100644
--- a/tests/components/venstar/test_climate.py
+++ b/tests/components/venstar/test_climate.py
@@ -1,18 +1,14 @@
 """The climate tests for the venstar integration."""
-
 from unittest.mock import patch
 
-from homeassistant.components.climate.const import (
-    SUPPORT_FAN_MODE,
-    SUPPORT_PRESET_MODE,
-    SUPPORT_TARGET_HUMIDITY,
-    SUPPORT_TARGET_TEMPERATURE,
-)
+from homeassistant.components.climate.const import ClimateEntityFeature
 
 from .util import async_init_integration, mock_venstar_devices
 
 EXPECTED_BASE_SUPPORTED_FEATURES = (
-    SUPPORT_TARGET_TEMPERATURE | SUPPORT_FAN_MODE | SUPPORT_PRESET_MODE
+    ClimateEntityFeature.TARGET_TEMPERATURE
+    | ClimateEntityFeature.FAN_MODE
+    | ClimateEntityFeature.PRESET_MODE
 )
 
 
@@ -45,7 +41,7 @@ async def test_colortouch(hass):
         "hvac_mode": 0,
         "friendly_name": "COLORTOUCH",
         "supported_features": EXPECTED_BASE_SUPPORTED_FEATURES
-        | SUPPORT_TARGET_HUMIDITY,
+        | ClimateEntityFeature.TARGET_HUMIDITY,
     }
     # Only test for a subset of attributes in case
     # HA changes the implementation and a new one appears