diff --git a/homeassistant/components/melcloud/__init__.py b/homeassistant/components/melcloud/__init__.py
index 6342c2bc3be..1bb65a943f8 100644
--- a/homeassistant/components/melcloud/__init__.py
+++ b/homeassistant/components/melcloud/__init__.py
@@ -142,7 +142,7 @@ class MelCloudDevice:
         )
 
 
-async def mel_devices_setup(hass, token) -> list[MelCloudDevice]:
+async def mel_devices_setup(hass, token) -> dict[str, list[MelCloudDevice]]:
     """Query connected devices from MELCloud."""
     session = async_get_clientsession(hass)
     try:
@@ -156,7 +156,7 @@ async def mel_devices_setup(hass, token) -> list[MelCloudDevice]:
     except (asyncio.TimeoutError, ClientConnectionError) as ex:
         raise ConfigEntryNotReady() from ex
 
-    wrapped_devices = {}
+    wrapped_devices: dict[str, list[MelCloudDevice]] = {}
     for device_type, devices in all_devices.items():
         wrapped_devices[device_type] = [MelCloudDevice(device) for device in devices]
     return wrapped_devices
diff --git a/homeassistant/components/melcloud/climate.py b/homeassistant/components/melcloud/climate.py
index b16221923de..a0ffe3a68bb 100644
--- a/homeassistant/components/melcloud/climate.py
+++ b/homeassistant/components/melcloud/climate.py
@@ -66,16 +66,19 @@ async def async_setup_entry(
 ) -> None:
     """Set up MelCloud device climate based on config_entry."""
     mel_devices = hass.data[DOMAIN][entry.entry_id]
-    async_add_entities(
+    entities: list[AtaDeviceClimate | AtwDeviceZoneClimate] = [
+        AtaDeviceClimate(mel_device, mel_device.device)
+        for mel_device in mel_devices[DEVICE_TYPE_ATA]
+    ]
+    entities.extend(
         [
-            AtaDeviceClimate(mel_device, mel_device.device)
-            for mel_device in mel_devices[DEVICE_TYPE_ATA]
-        ]
-        + [
             AtwDeviceZoneClimate(mel_device, mel_device.device, zone)
             for mel_device in mel_devices[DEVICE_TYPE_ATW]
             for zone in mel_device.device.zones
-        ],
+        ]
+    )
+    async_add_entities(
+        entities,
         True,
     )
 
@@ -157,14 +160,16 @@ class AtaDeviceClimate(MelCloudClimate):
         return attr
 
     @property
-    def hvac_mode(self) -> HVACMode:
+    def hvac_mode(self) -> HVACMode | None:
         """Return hvac operation ie. heat, cool mode."""
         mode = self._device.operation_mode
         if not self._device.power or mode is None:
             return HVACMode.OFF
         return ATA_HVAC_MODE_LOOKUP.get(mode)
 
-    def _apply_set_hvac_mode(self, hvac_mode: str, set_dict: dict[str, Any]) -> None:
+    def _apply_set_hvac_mode(
+        self, hvac_mode: HVACMode, set_dict: dict[str, Any]
+    ) -> None:
         """Apply hvac mode changes to a dict used to call _device.set."""
         if hvac_mode == HVACMode.OFF:
             set_dict["power"] = False
@@ -180,7 +185,7 @@ class AtaDeviceClimate(MelCloudClimate):
 
     async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set new target hvac mode."""
-        set_dict = {}
+        set_dict: dict[str, Any] = {}
         self._apply_set_hvac_mode(hvac_mode, set_dict)
         await self._device.set(set_dict)
 
@@ -188,7 +193,9 @@ class AtaDeviceClimate(MelCloudClimate):
     def hvac_modes(self) -> list[HVACMode]:
         """Return the list of available hvac operation modes."""
         return [HVACMode.OFF] + [
-            ATA_HVAC_MODE_LOOKUP.get(mode) for mode in self._device.operation_modes
+            ATA_HVAC_MODE_LOOKUP[mode]
+            for mode in self._device.operation_modes
+            if mode in ATA_HVAC_MODE_LOOKUP
         ]
 
     @property
@@ -201,9 +208,9 @@ class AtaDeviceClimate(MelCloudClimate):
         """Return the temperature we try to reach."""
         return self._device.target_temperature
 
-    async def async_set_temperature(self, **kwargs) -> None:
+    async def async_set_temperature(self, **kwargs: Any) -> None:
         """Set new target temperature."""
-        set_dict = {}
+        set_dict: dict[str, Any] = {}
         if ATTR_HVAC_MODE in kwargs:
             self._apply_set_hvac_mode(
                 kwargs.get(ATTR_HVAC_MODE, self.hvac_mode), set_dict
@@ -255,7 +262,7 @@ class AtaDeviceClimate(MelCloudClimate):
         await self.async_set_vane_vertical(swing_mode)
 
     @property
-    def swing_modes(self) -> str | None:
+    def swing_modes(self) -> list[str] | None:
         """Return a list of available vertical vane positions and modes."""
         return self._device.vane_vertical_positions
 
diff --git a/mypy.ini b/mypy.ini
index 30bc97f545a..91dc7f9e71f 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -2761,12 +2761,6 @@ ignore_errors = true
 [mypy-homeassistant.components.lyric.sensor]
 ignore_errors = true
 
-[mypy-homeassistant.components.melcloud]
-ignore_errors = true
-
-[mypy-homeassistant.components.melcloud.climate]
-ignore_errors = true
-
 [mypy-homeassistant.components.meteo_france.sensor]
 ignore_errors = true
 
diff --git a/script/hassfest/mypy_config.py b/script/hassfest/mypy_config.py
index 939290ca9ab..d987a76d41d 100644
--- a/script/hassfest/mypy_config.py
+++ b/script/hassfest/mypy_config.py
@@ -62,8 +62,6 @@ IGNORED_MODULES: Final[list[str]] = [
     "homeassistant.components.lyric.climate",
     "homeassistant.components.lyric.config_flow",
     "homeassistant.components.lyric.sensor",
-    "homeassistant.components.melcloud",
-    "homeassistant.components.melcloud.climate",
     "homeassistant.components.meteo_france.sensor",
     "homeassistant.components.meteo_france.weather",
     "homeassistant.components.minecraft_server",