diff --git a/homeassistant/components/tado/climate.py b/homeassistant/components/tado/climate.py
index b1e050dabb7..87ca302f029 100644
--- a/homeassistant/components/tado/climate.py
+++ b/homeassistant/components/tado/climate.py
@@ -1,16 +1,18 @@
 """Support for Tado thermostats."""
+from __future__ import annotations
+
 import logging
 
 import voluptuous as vol
 
-from homeassistant.components.climate import ClimateEntity, ClimateEntityFeature
+from homeassistant.components.climate import ClimateEntity
 from homeassistant.components.climate.const import (
-    CURRENT_HVAC_OFF,
     FAN_AUTO,
-    HVAC_MODE_HEAT,
-    HVAC_MODE_OFF,
     PRESET_AWAY,
     PRESET_HOME,
+    ClimateEntityFeature,
+    HVACAction,
+    HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import ATTR_TEMPERATURE, PRECISION_TENTHS, TEMP_CELSIUS
@@ -160,7 +162,7 @@ def create_climate_entity(tado, name: str, zone_id: int, device_info: dict):
 
         cool_temperatures = capabilities[CONST_MODE_COOL]["temperatures"]
     else:
-        supported_hvac_modes.append(HVAC_MODE_HEAT)
+        supported_hvac_modes.append(HVACMode.HEAT)
 
     if CONST_MODE_HEAT in capabilities:
         heat_temperatures = capabilities[CONST_MODE_HEAT]["temperatures"]
@@ -260,7 +262,7 @@ class TadoClimate(TadoZoneEntity, ClimateEntity):
 
         self._current_tado_fan_speed = CONST_FAN_OFF
         self._current_tado_hvac_mode = CONST_MODE_OFF
-        self._current_tado_hvac_action = CURRENT_HVAC_OFF
+        self._current_tado_hvac_action = HVACAction.OFF
         self._current_tado_swing_mode = TADO_SWING_OFF
 
         self._tado_zone_data = None
@@ -308,15 +310,15 @@ class TadoClimate(TadoZoneEntity, ClimateEntity):
         return self._tado_zone_data.current_temp
 
     @property
-    def hvac_mode(self):
+    def hvac_mode(self) -> HVACMode:
         """Return hvac operation ie. heat, cool mode.
 
         Need to be one of HVAC_MODE_*.
         """
-        return TADO_TO_HA_HVAC_MODE_MAP.get(self._current_tado_hvac_mode, HVAC_MODE_OFF)
+        return TADO_TO_HA_HVAC_MODE_MAP.get(self._current_tado_hvac_mode, HVACMode.OFF)
 
     @property
-    def hvac_modes(self):
+    def hvac_modes(self) -> list[HVACMode]:
         """Return the list of available hvac operation modes.
 
         Need to be a subset of HVAC_MODES.
@@ -324,13 +326,13 @@ class TadoClimate(TadoZoneEntity, ClimateEntity):
         return self._supported_hvac_modes
 
     @property
-    def hvac_action(self):
+    def hvac_action(self) -> HVACAction:
         """Return the current running hvac operation if supported.
 
         Need to be one of CURRENT_HVAC_*.
         """
         return TADO_HVAC_ACTION_TO_HA_HVAC_ACTION.get(
-            self._tado_zone_data.current_hvac_action, CURRENT_HVAC_OFF
+            self._tado_zone_data.current_hvac_action, HVACAction.OFF
         )
 
     @property
@@ -423,7 +425,7 @@ class TadoClimate(TadoZoneEntity, ClimateEntity):
         new_hvac_mode = CONST_MODE_COOL if self._ac_device else CONST_MODE_HEAT
         self._control_hvac(target_temp=temperature, hvac_mode=new_hvac_mode)
 
-    def set_hvac_mode(self, hvac_mode):
+    def set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set new target hvac mode."""
 
         self._control_hvac(hvac_mode=HA_TO_TADO_HVAC_MODE_MAP[hvac_mode])
diff --git a/homeassistant/components/tado/const.py b/homeassistant/components/tado/const.py
index 291d02cb403..b6b36444211 100644
--- a/homeassistant/components/tado/const.py
+++ b/homeassistant/components/tado/const.py
@@ -11,36 +11,25 @@ from PyTado.const import (
 )
 
 from homeassistant.components.climate.const import (
-    CURRENT_HVAC_COOL,
-    CURRENT_HVAC_DRY,
-    CURRENT_HVAC_FAN,
-    CURRENT_HVAC_HEAT,
-    CURRENT_HVAC_IDLE,
-    CURRENT_HVAC_OFF,
     FAN_AUTO,
     FAN_HIGH,
     FAN_LOW,
     FAN_MEDIUM,
     FAN_OFF,
-    HVAC_MODE_AUTO,
-    HVAC_MODE_COOL,
-    HVAC_MODE_DRY,
-    HVAC_MODE_FAN_ONLY,
-    HVAC_MODE_HEAT,
-    HVAC_MODE_HEAT_COOL,
-    HVAC_MODE_OFF,
     PRESET_AWAY,
     PRESET_HOME,
+    HVACAction,
+    HVACMode,
 )
 
 TADO_HVAC_ACTION_TO_HA_HVAC_ACTION = {
-    CONST_HVAC_HEAT: CURRENT_HVAC_HEAT,
-    CONST_HVAC_DRY: CURRENT_HVAC_DRY,
-    CONST_HVAC_FAN: CURRENT_HVAC_FAN,
-    CONST_HVAC_COOL: CURRENT_HVAC_COOL,
-    CONST_HVAC_IDLE: CURRENT_HVAC_IDLE,
-    CONST_HVAC_OFF: CURRENT_HVAC_OFF,
-    CONST_HVAC_HOT_WATER: CURRENT_HVAC_HEAT,
+    CONST_HVAC_HEAT: HVACAction.HEATING,
+    CONST_HVAC_DRY: HVACAction.DRYING,
+    CONST_HVAC_FAN: HVACAction.FAN,
+    CONST_HVAC_COOL: HVACAction.COOLING,
+    CONST_HVAC_IDLE: HVACAction.IDLE,
+    CONST_HVAC_OFF: HVACAction.OFF,
+    CONST_HVAC_HOT_WATER: HVACAction.HEATING,
 }
 
 # Configuration
@@ -121,10 +110,10 @@ ORDERED_KNOWN_TADO_MODES = [
 ]
 
 TADO_MODES_TO_HA_CURRENT_HVAC_ACTION = {
-    CONST_MODE_HEAT: CURRENT_HVAC_HEAT,
-    CONST_MODE_DRY: CURRENT_HVAC_DRY,
-    CONST_MODE_FAN: CURRENT_HVAC_FAN,
-    CONST_MODE_COOL: CURRENT_HVAC_COOL,
+    CONST_MODE_HEAT: HVACAction.HEATING,
+    CONST_MODE_DRY: HVACAction.DRYING,
+    CONST_MODE_FAN: HVACAction.FAN,
+    CONST_MODE_COOL: HVACAction.COOLING,
 }
 
 # These modes will not allow a temp to be set
@@ -137,13 +126,13 @@ TADO_MODES_WITH_NO_TEMP_SETTING = [CONST_MODE_AUTO, CONST_MODE_DRY, CONST_MODE_F
 #    This runs the smart schedule
 #
 HA_TO_TADO_HVAC_MODE_MAP = {
-    HVAC_MODE_OFF: CONST_MODE_OFF,
-    HVAC_MODE_HEAT_COOL: CONST_MODE_AUTO,
-    HVAC_MODE_AUTO: CONST_MODE_SMART_SCHEDULE,
-    HVAC_MODE_HEAT: CONST_MODE_HEAT,
-    HVAC_MODE_COOL: CONST_MODE_COOL,
-    HVAC_MODE_DRY: CONST_MODE_DRY,
-    HVAC_MODE_FAN_ONLY: CONST_MODE_FAN,
+    HVACMode.OFF: CONST_MODE_OFF,
+    HVACMode.HEAT_COOL: CONST_MODE_AUTO,
+    HVACMode.AUTO: CONST_MODE_SMART_SCHEDULE,
+    HVACMode.HEAT: CONST_MODE_HEAT,
+    HVACMode.COOL: CONST_MODE_COOL,
+    HVACMode.DRY: CONST_MODE_DRY,
+    HVACMode.FAN_ONLY: CONST_MODE_FAN,
 }
 
 HA_TO_TADO_FAN_MODE_MAP = {