diff --git a/homeassistant/components/vicare/climate.py b/homeassistant/components/vicare/climate.py
index 3a2dcafac2d..bca0b96c726 100644
--- a/homeassistant/components/vicare/climate.py
+++ b/homeassistant/components/vicare/climate.py
@@ -146,6 +146,7 @@ class ViCareClimate(ViCareEntity, ClimateEntity):
     _attr_max_temp = VICARE_TEMP_HEATING_MAX
     _attr_target_temperature_step = PRECISION_WHOLE
     _attr_preset_modes = list(HA_TO_VICARE_PRESET_HEATING)
+    _current_action: bool | None = None
 
     def __init__(self, name, api, circuit, device_config):
         """Initialize the climate device."""
@@ -153,10 +154,9 @@ class ViCareClimate(ViCareEntity, ClimateEntity):
         self._attr_name = name
         self._api = api
         self._circuit = circuit
-        self._attributes = {}
+        self._attributes: dict[str, Any] = {}
         self._current_mode = None
         self._current_program = None
-        self._current_action = None
         self._attr_unique_id = f"{device_config.getConfig().serial}-{circuit.id}"
 
     def update(self) -> None:
diff --git a/homeassistant/components/vicare/water_heater.py b/homeassistant/components/vicare/water_heater.py
index 7e90c57e320..2e312d54d7d 100644
--- a/homeassistant/components/vicare/water_heater.py
+++ b/homeassistant/components/vicare/water_heater.py
@@ -106,7 +106,7 @@ class ViCareWater(ViCareEntity, WaterHeaterEntity):
         self._attr_name = name
         self._api = api
         self._circuit = circuit
-        self._attributes = {}
+        self._attributes: dict[str, Any] = {}
         self._current_mode = None
         self._attr_unique_id = f"{device_config.getConfig().serial}-{circuit.id}"