diff --git a/homeassistant/components/shelly/__init__.py b/homeassistant/components/shelly/__init__.py
index 3130acff538..75fedf9b16d 100644
--- a/homeassistant/components/shelly/__init__.py
+++ b/homeassistant/components/shelly/__init__.py
@@ -64,6 +64,7 @@ from .utils import (
     get_http_port,
     get_rpc_scripts_event_types,
     get_ws_context,
+    remove_stale_blu_trv_devices,
 )
 
 PLATFORMS: Final = [
@@ -300,6 +301,7 @@ async def _async_setup_rpc_entry(hass: HomeAssistant, entry: ShellyConfigEntry)
                 runtime_data.rpc_script_events = await get_rpc_scripts_event_types(
                     device, ignore_scripts=[BLE_SCRIPT_NAME]
                 )
+            remove_stale_blu_trv_devices(hass, device, entry)
         except (DeviceConnectionError, MacAddressMismatchError, RpcCallError) as err:
             await device.shutdown()
             raise ConfigEntryNotReady(
diff --git a/homeassistant/components/shelly/quality_scale.yaml b/homeassistant/components/shelly/quality_scale.yaml
index 753b2ee4a93..39667b556dd 100644
--- a/homeassistant/components/shelly/quality_scale.yaml
+++ b/homeassistant/components/shelly/quality_scale.yaml
@@ -61,8 +61,8 @@ rules:
   reconfiguration-flow: done
   repair-issues: done
   stale-devices:
-    status: todo
-    comment: BLU TRV needs to be removed when un-paired
+    status: done
+    comment: BLU TRV is removed when un-paired
 
   # Platinum
   async-dependency: done
diff --git a/homeassistant/components/shelly/utils.py b/homeassistant/components/shelly/utils.py
index eff5c95125c..cc0f2cf75d5 100644
--- a/homeassistant/components/shelly/utils.py
+++ b/homeassistant/components/shelly/utils.py
@@ -16,6 +16,7 @@ from aioshelly.const import (
     DEFAULT_COAP_PORT,
     DEFAULT_HTTP_PORT,
     MODEL_1L,
+    MODEL_BLU_GATEWAY_G3,
     MODEL_DIMMER,
     MODEL_DIMMER_2,
     MODEL_EM3,
@@ -821,3 +822,32 @@ def get_block_device_info(
         manufacturer="Shelly",
         via_device=(DOMAIN, mac),
     )
+
+
+@callback
+def remove_stale_blu_trv_devices(
+    hass: HomeAssistant, rpc_device: RpcDevice, entry: ConfigEntry
+) -> None:
+    """Remove stale BLU TRV devices."""
+    if rpc_device.model != MODEL_BLU_GATEWAY_G3:
+        return
+
+    dev_reg = dr.async_get(hass)
+    devices = dev_reg.devices.get_devices_for_config_entry_id(entry.entry_id)
+    config = rpc_device.config
+    blutrv_keys = get_rpc_key_ids(config, BLU_TRV_IDENTIFIER)
+    trv_addrs = [config[f"{BLU_TRV_IDENTIFIER}:{key}"]["addr"] for key in blutrv_keys]
+
+    for device in devices:
+        if not device.via_device_id:
+            # Device is not a sub-device, skip
+            continue
+
+        if any(
+            identifier[0] == DOMAIN and identifier[1] in trv_addrs
+            for identifier in device.identifiers
+        ):
+            continue
+
+        LOGGER.debug("Removing stale BLU TRV device %s", device.name)
+        dev_reg.async_update_device(device.id, remove_config_entry_id=entry.entry_id)
diff --git a/tests/components/shelly/conftest.py b/tests/components/shelly/conftest.py
index ac70226a20a..4eccb075b67 100644
--- a/tests/components/shelly/conftest.py
+++ b/tests/components/shelly/conftest.py
@@ -260,6 +260,33 @@ MOCK_BLU_TRV_REMOTE_CONFIG = {
                 "meta": {},
             },
         },
+        {
+            "key": "blutrv:201",
+            "status": {
+                "id": 201,
+                "target_C": 17.1,
+                "current_C": 17.1,
+                "pos": 0,
+                "rssi": -60,
+                "battery": 100,
+                "packet_id": 58,
+                "last_updated_ts": 1734967725,
+                "paired": True,
+                "rpc": True,
+                "rsv": 61,
+            },
+            "config": {
+                "id": 201,
+                "addr": "f8:44:77:25:f0:de",
+                "name": "TRV-201",
+                "key": None,
+                "trv": "bthomedevice:201",
+                "temp_sensors": [],
+                "dw_sensors": [],
+                "override_delay": 30,
+                "meta": {},
+            },
+        },
     ],
     "blutrv:200": {
         "id": 0,
@@ -272,6 +299,17 @@ MOCK_BLU_TRV_REMOTE_CONFIG = {
         "name": "TRV-Name",
         "local_name": "SBTR-001AEU",
     },
+    "blutrv:201": {
+        "id": 1,
+        "enable": True,
+        "min_valve_position": 0,
+        "default_boost_duration": 1800,
+        "default_override_duration": 2147483647,
+        "default_override_target_C": 8,
+        "addr": "f8:44:77:25:f0:de",
+        "name": "TRV-201",
+        "local_name": "SBTR-001AEU",
+    },
 }
 
 
@@ -287,6 +325,17 @@ MOCK_BLU_TRV_REMOTE_STATUS = {
         "battery": 100,
         "errors": [],
     },
+    "blutrv:201": {
+        "id": 0,
+        "pos": 0,
+        "steps": 0,
+        "current_C": 15.2,
+        "target_C": 17.1,
+        "schedule_rev": 0,
+        "rssi": -60,
+        "battery": 100,
+        "errors": [],
+    },
 }
 
 
diff --git a/tests/components/shelly/test_init.py b/tests/components/shelly/test_init.py
index 283de897d8d..703df09bb61 100644
--- a/tests/components/shelly/test_init.py
+++ b/tests/components/shelly/test_init.py
@@ -5,7 +5,7 @@ from unittest.mock import AsyncMock, Mock, call, patch
 
 from aioshelly.block_device import COAP
 from aioshelly.common import ConnectionOptions
-from aioshelly.const import MODEL_PLUS_2PM
+from aioshelly.const import MODEL_BLU_GATEWAY_G3, MODEL_PLUS_2PM
 from aioshelly.exceptions import (
     DeviceConnectionError,
     InvalidAuthError,
@@ -38,6 +38,7 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import issue_registry as ir
 from homeassistant.helpers.device_registry import DeviceRegistry, format_mac
+from homeassistant.helpers.entity_registry import EntityRegistry
 from homeassistant.setup import async_setup_component
 
 from . import MOCK_MAC, init_integration, mutate_rpc_device_status
@@ -606,3 +607,49 @@ async def test_ble_scanner_unsupported_firmware_fixed(
 
     assert not issue_registry.async_get_issue(DOMAIN, issue_id)
     assert len(issue_registry.issues) == 0
+
+
+async def test_blu_trv_stale_device_removal(
+    hass: HomeAssistant,
+    mock_blu_trv: Mock,
+    entity_registry: EntityRegistry,
+    device_registry: DeviceRegistry,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    """Test BLU TRV removal of stale a device after un-pairing."""
+    trv_200_entity_id = "climate.trv_name"
+    trv_201_entity_id = "climate.trv_201"
+
+    monkeypatch.setattr(mock_blu_trv, "model", MODEL_BLU_GATEWAY_G3)
+    gw_entry = await init_integration(hass, 3, model=MODEL_BLU_GATEWAY_G3)
+
+    # verify that both trv devices are present
+    assert hass.states.get(trv_200_entity_id) is not None
+    trv_200_entry = entity_registry.async_get(trv_200_entity_id)
+    assert trv_200_entry
+
+    trv_200_device_entry = device_registry.async_get(trv_200_entry.device_id)
+    assert trv_200_device_entry
+    assert trv_200_device_entry.name == "TRV-Name"
+
+    assert hass.states.get(trv_201_entity_id) is not None
+    trv_201_entry = entity_registry.async_get(trv_201_entity_id)
+    assert trv_201_entry
+
+    trv_201_device_entry = device_registry.async_get(trv_201_entry.device_id)
+    assert trv_201_device_entry
+    assert trv_201_device_entry.name == "TRV-201"
+
+    # simulate un-pairing of trv 201 device
+    monkeypatch.delitem(mock_blu_trv.config, "blutrv:201")
+    monkeypatch.delitem(mock_blu_trv.status, "blutrv:201")
+
+    await hass.config_entries.async_reload(gw_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # verify that trv 201 is removed
+    assert hass.states.get(trv_200_entity_id) is not None
+    assert device_registry.async_get(trv_200_entry.device_id) is not None
+
+    assert hass.states.get(trv_201_entity_id) is None
+    assert device_registry.async_get(trv_201_entry.device_id) is None