diff --git a/homeassistant/components/aquacell/config_flow.py b/homeassistant/components/aquacell/config_flow.py
index 332cd16e749..1ee89035d93 100644
--- a/homeassistant/components/aquacell/config_flow.py
+++ b/homeassistant/components/aquacell/config_flow.py
@@ -56,7 +56,7 @@ class AquaCellConfigFlow(ConfigFlow, domain=DOMAIN):
                 refresh_token = await api.authenticate(
                     user_input[CONF_EMAIL], user_input[CONF_PASSWORD]
                 )
-            except ApiException:
+            except (ApiException, TimeoutError):
                 errors["base"] = "cannot_connect"
             except AuthenticationFailed:
                 errors["base"] = "invalid_auth"
diff --git a/homeassistant/components/aquacell/coordinator.py b/homeassistant/components/aquacell/coordinator.py
index dd5dfcd2d0d..ee4afb451b9 100644
--- a/homeassistant/components/aquacell/coordinator.py
+++ b/homeassistant/components/aquacell/coordinator.py
@@ -56,7 +56,7 @@ class AquacellCoordinator(DataUpdateCoordinator[dict[str, Softener]]):
         so entities can quickly look up their data.
         """
 
-        async with asyncio.timeout(10):
+        async with asyncio.timeout(30):
             # Check if the refresh token is expired
             expiry_time = (
                 self.refresh_token_creation_time
@@ -72,7 +72,7 @@ class AquacellCoordinator(DataUpdateCoordinator[dict[str, Softener]]):
                 softeners = await self.aquacell_api.get_all_softeners()
             except AuthenticationFailed as err:
                 raise ConfigEntryError from err
-            except AquacellApiException as err:
+            except (AquacellApiException, TimeoutError) as err:
                 raise UpdateFailed(f"Error communicating with API: {err}") from err
 
         return {softener.dsn: softener for softener in softeners}
diff --git a/tests/components/aquacell/test_config_flow.py b/tests/components/aquacell/test_config_flow.py
index b73852d513f..f677b3f8348 100644
--- a/tests/components/aquacell/test_config_flow.py
+++ b/tests/components/aquacell/test_config_flow.py
@@ -79,6 +79,7 @@ async def test_full_flow(
     ("exception", "error"),
     [
         (ApiException, "cannot_connect"),
+        (TimeoutError, "cannot_connect"),
         (AuthenticationFailed, "invalid_auth"),
         (Exception, "unknown"),
     ],