diff --git a/homeassistant/components/heos/services.py b/homeassistant/components/heos/services.py
index f4d5961cc47..4dc3b247707 100644
--- a/homeassistant/components/heos/services.py
+++ b/homeassistant/components/heos/services.py
@@ -7,7 +7,7 @@ import voluptuous as vol
 
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.core import HomeAssistant, ServiceCall
-from homeassistant.exceptions import HomeAssistantError
+from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
 from homeassistant.helpers import config_validation as cv, issue_registry as ir
 
 from .const import (
@@ -46,7 +46,6 @@ def register(hass: HomeAssistant):
 
 def _get_controller(hass: HomeAssistant) -> Heos:
     """Get the HEOS controller instance."""
-
     _LOGGER.warning(
         "Actions 'heos.sign_in' and 'heos.sign_out' are deprecated and will be removed in the 2025.8.0 release"
     )
@@ -79,16 +78,25 @@ async def _sign_in_handler(service: ServiceCall) -> None:
     try:
         await controller.sign_in(username, password)
     except CommandAuthenticationError as err:
-        _LOGGER.error("Sign in failed: %s", err)
+        raise ServiceValidationError(
+            translation_domain=DOMAIN, translation_key="sign_in_auth_error"
+        ) from err
     except HeosError as err:
-        _LOGGER.error("Unable to sign in: %s", err)
+        raise HomeAssistantError(
+            translation_domain=DOMAIN,
+            translation_key="sign_in_error",
+            translation_placeholders={"error": str(err)},
+        ) from err
 
 
 async def _sign_out_handler(service: ServiceCall) -> None:
     """Sign out of the HEOS account."""
-
     controller = _get_controller(service.hass)
     try:
         await controller.sign_out()
     except HeosError as err:
-        _LOGGER.error("Unable to sign out: %s", err)
+        raise HomeAssistantError(
+            translation_domain=DOMAIN,
+            translation_key="sign_out_error",
+            translation_placeholders={"error": str(err)},
+        ) from err
diff --git a/homeassistant/components/heos/strings.json b/homeassistant/components/heos/strings.json
index 907804d10e1..4092d4360db 100644
--- a/homeassistant/components/heos/strings.json
+++ b/homeassistant/components/heos/strings.json
@@ -100,6 +100,15 @@
     "integration_not_loaded": {
       "message": "The HEOS integration is not loaded"
     },
+    "sign_in_auth_error": {
+      "message": "Failed to sign in: Invalid username and/or password"
+    },
+    "sign_in_error": {
+      "message": "Unable to sign in: {error}"
+    },
+    "sign_out_error": {
+      "message": "Unable to sign out: {error}"
+    },
     "not_heos_media_player": {
       "message": "Entity {entity_id} is not a HEOS media player entity"
     },
diff --git a/tests/components/heos/test_services.py b/tests/components/heos/test_services.py
index 8ca365497c6..8eda26d2b3d 100644
--- a/tests/components/heos/test_services.py
+++ b/tests/components/heos/test_services.py
@@ -11,7 +11,7 @@ from homeassistant.components.heos.const import (
     SERVICE_SIGN_OUT,
 )
 from homeassistant.core import HomeAssistant
-from homeassistant.exceptions import HomeAssistantError
+from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
 
 from tests.common import MockConfigEntry
 
@@ -34,10 +34,7 @@ async def test_sign_in(
 
 
 async def test_sign_in_failed(
-    hass: HomeAssistant,
-    config_entry: MockConfigEntry,
-    controller: Heos,
-    caplog: pytest.LogCaptureFixture,
+    hass: HomeAssistant, config_entry: MockConfigEntry, controller: Heos
 ) -> None:
     """Test sign-in service logs error when not connected."""
     config_entry.add_to_hass(hass)
@@ -47,22 +44,19 @@ async def test_sign_in_failed(
         "", "Invalid credentials", 6
     )
 
-    await hass.services.async_call(
-        DOMAIN,
-        SERVICE_SIGN_IN,
-        {ATTR_USERNAME: "test@test.com", ATTR_PASSWORD: "password"},
-        blocking=True,
-    )
+    with pytest.raises(ServiceValidationError):
+        await hass.services.async_call(
+            DOMAIN,
+            SERVICE_SIGN_IN,
+            {ATTR_USERNAME: "test@test.com", ATTR_PASSWORD: "password"},
+            blocking=True,
+        )
 
     controller.sign_in.assert_called_once_with("test@test.com", "password")
-    assert "Sign in failed: Invalid credentials (6)" in caplog.text
 
 
 async def test_sign_in_unknown_error(
-    hass: HomeAssistant,
-    config_entry: MockConfigEntry,
-    controller: Heos,
-    caplog: pytest.LogCaptureFixture,
+    hass: HomeAssistant, config_entry: MockConfigEntry, controller: Heos
 ) -> None:
     """Test sign-in service logs error for failure."""
     config_entry.add_to_hass(hass)
@@ -70,15 +64,15 @@ async def test_sign_in_unknown_error(
 
     controller.sign_in.side_effect = HeosError()
 
-    await hass.services.async_call(
-        DOMAIN,
-        SERVICE_SIGN_IN,
-        {ATTR_USERNAME: "test@test.com", ATTR_PASSWORD: "password"},
-        blocking=True,
-    )
+    with pytest.raises(HomeAssistantError):
+        await hass.services.async_call(
+            DOMAIN,
+            SERVICE_SIGN_IN,
+            {ATTR_USERNAME: "test@test.com", ATTR_PASSWORD: "password"},
+            blocking=True,
+        )
 
     controller.sign_in.assert_called_once_with("test@test.com", "password")
-    assert "Unable to sign in" in caplog.text
 
 
 async def test_sign_in_not_loaded_raises(
@@ -123,17 +117,14 @@ async def test_sign_out_not_loaded_raises(
 
 
 async def test_sign_out_unknown_error(
-    hass: HomeAssistant,
-    config_entry: MockConfigEntry,
-    controller: Heos,
-    caplog: pytest.LogCaptureFixture,
+    hass: HomeAssistant, config_entry: MockConfigEntry, controller: Heos
 ) -> None:
     """Test the sign-out service."""
     config_entry.add_to_hass(hass)
     assert await hass.config_entries.async_setup(config_entry.entry_id)
     controller.sign_out.side_effect = HeosError()
 
-    await hass.services.async_call(DOMAIN, SERVICE_SIGN_OUT, {}, blocking=True)
+    with pytest.raises(HomeAssistantError):
+        await hass.services.async_call(DOMAIN, SERVICE_SIGN_OUT, {}, blocking=True)
 
     assert controller.sign_out.call_count == 1
-    assert "Unable to sign out" in caplog.text