diff --git a/homeassistant/components/vistapool/__init__.py b/homeassistant/components/vistapool/__init__.py
index d7a01cbd6578..ebd730b93c22 100644
--- a/homeassistant/components/vistapool/__init__.py
+++ b/homeassistant/components/vistapool/__init__.py
@@ -36,6 +36,7 @@ PLATFORMS: list[Platform] = [
     Platform.NUMBER,
     Platform.SELECT,
     Platform.SENSOR,
+    Platform.TIME,
 ]
 
 
diff --git a/homeassistant/components/vistapool/icons.json b/homeassistant/components/vistapool/icons.json
index 1ae79f516475..4746854e1541 100644
--- a/homeassistant/components/vistapool/icons.json
+++ b/homeassistant/components/vistapool/icons.json
@@ -22,6 +22,14 @@
       "uv": {
         "default": "mdi:weather-sunny-alert"
       }
+    },
+    "time": {
+      "filtration_interval_end": {
+        "default": "mdi:clock-end"
+      },
+      "filtration_interval_start": {
+        "default": "mdi:clock-start"
+      }
     }
   }
 }
diff --git a/homeassistant/components/vistapool/strings.json b/homeassistant/components/vistapool/strings.json
index f61ec754f5eb..62fbb793c2c3 100644
--- a/homeassistant/components/vistapool/strings.json
+++ b/homeassistant/components/vistapool/strings.json
@@ -207,6 +207,14 @@
       "uv": {
         "name": "UV"
       }
+    },
+    "time": {
+      "filtration_interval_end": {
+        "name": "Filtration interval {number} end"
+      },
+      "filtration_interval_start": {
+        "name": "Filtration interval {number} start"
+      }
     }
   },
   "exceptions": {
diff --git a/homeassistant/components/vistapool/time.py b/homeassistant/components/vistapool/time.py
new file mode 100644
index 000000000000..30b7b005d9a6
--- /dev/null
+++ b/homeassistant/components/vistapool/time.py
@@ -0,0 +1,134 @@
+"""Vistapool Time entities."""
+
+from dataclasses import dataclass
+from datetime import time
+from typing import override
+
+from aioaquarite import AquariteError
+
+from homeassistant.components.time import TimeEntity, TimeEntityDescription
+from homeassistant.const import EntityCategory
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers.dispatcher import async_dispatcher_connect
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+
+from . import VistapoolConfigEntry
+from .const import DOMAIN, SIGNAL_NEW_POOL
+from .coordinator import VistapoolDataUpdateCoordinator
+from .entity import VistapoolEntity
+
+PARALLEL_UPDATES = 1
+
+_SECONDS_PER_HOUR = 3600
+_SECONDS_PER_MINUTE = 60
+
+
+@dataclass(frozen=True, kw_only=True)
+class VistapoolTimeEntityDescription(TimeEntityDescription):
+    """Describes a Vistapool time entity."""
+
+    value_path: str
+    translation_placeholders: dict[str, str]
+
+
+TIME_DESCRIPTIONS: tuple[VistapoolTimeEntityDescription, ...] = tuple(
+    VistapoolTimeEntityDescription(
+        key=f"filtration_interval_{interval}_{bound}",
+        translation_key=f"filtration_interval_{bound}",
+        translation_placeholders={"number": str(interval)},
+        entity_category=EntityCategory.CONFIG,
+        value_path=f"filtration.interval{interval}.{api_field}",
+    )
+    for interval in (1, 2, 3)
+    for bound, api_field in (("start", "from"), ("end", "to"))
+)
+
+
+def _build_time_entities(
+    coordinator: VistapoolDataUpdateCoordinator,
+) -> list[TimeEntity]:
+    """Build the time entities for a single pool."""
+    return [
+        VistapoolTime(coordinator, description) for description in TIME_DESCRIPTIONS
+    ]
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: VistapoolConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up Vistapool time entities for every pool on the account."""
+    entities: list[TimeEntity] = []
+    for coordinator in entry.runtime_data.coordinators.values():
+        entities.extend(_build_time_entities(coordinator))
+    async_add_entities(entities)
+
+    @callback
+    def _async_add_pool(coordinator: VistapoolDataUpdateCoordinator) -> None:
+        async_add_entities(_build_time_entities(coordinator))
+
+    entry.async_on_unload(
+        async_dispatcher_connect(
+            hass, f"{SIGNAL_NEW_POOL}_{entry.entry_id}", _async_add_pool
+        )
+    )
+
+
+class VistapoolTime(VistapoolEntity, TimeEntity):
+    """Generic Vistapool time driven by an entity description."""
+
+    entity_description: VistapoolTimeEntityDescription
+
+    def __init__(
+        self,
+        coordinator: VistapoolDataUpdateCoordinator,
+        description: VistapoolTimeEntityDescription,
+    ) -> None:
+        """Initialize the time entity."""
+        super().__init__(coordinator)
+        self.entity_description = description
+        self._attr_unique_id = self.build_unique_id(description.key)
+        self._attr_translation_placeholders = description.translation_placeholders
+
+    @property
+    @override
+    def native_value(self) -> time | None:
+        """Return the interval bound as a time, decoded from seconds since midnight."""
+        raw = self.coordinator.get_value(self.entity_description.value_path)
+        if raw is None:
+            return None
+        try:
+            seconds = int(raw)
+            return time(
+                seconds // _SECONDS_PER_HOUR,
+                (seconds % _SECONDS_PER_HOUR) // _SECONDS_PER_MINUTE,
+                seconds % _SECONDS_PER_MINUTE,
+            )
+        except TypeError, ValueError:
+            # Also covers out-of-range values (negative or >= 24h), which make
+            # the time() constructor raise instead of silently wrapping.
+            return None
+
+    @override
+    async def async_set_value(self, value: time) -> None:
+        """Send the interval bound to the controller as seconds since midnight."""
+        seconds = (
+            value.hour * _SECONDS_PER_HOUR
+            + value.minute * _SECONDS_PER_MINUTE
+            + value.second
+        )
+        try:
+            await self.coordinator.api.set_value(
+                self.coordinator.pool_id,
+                self.entity_description.value_path,
+                seconds,
+            )
+        except AquariteError as err:
+            raise HomeAssistantError(
+                translation_domain=DOMAIN,
+                translation_key="set_failed",
+                translation_placeholders={"entity": self.entity_id},
+            ) from err
+        self.coordinator.apply_optimistic(self.entity_description.value_path, seconds)
diff --git a/tests/components/vistapool/snapshots/test_time.ambr b/tests/components/vistapool/snapshots/test_time.ambr
new file mode 100644
index 000000000000..923601a70dc6
--- /dev/null
+++ b/tests/components/vistapool/snapshots/test_time.ambr
@@ -0,0 +1,301 @@
+# serializer version: 1
+# name: test_all_entities[time.my_pool_filtration_interval_1_end-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_1_end',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 1 end',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 1 end',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_end',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_1_end',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_1_end-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 1 end',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_1_end',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '10:00:00',
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_1_start-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_1_start',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 1 start',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 1 start',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_start',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_1_start',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_1_start-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 1 start',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_1_start',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '08:00:00',
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_2_end-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_2_end',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 2 end',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 2 end',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_end',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_2_end',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_2_end-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 2 end',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_2_end',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '14:00:00',
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_2_start-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_2_start',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 2 start',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 2 start',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_start',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_2_start',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_2_start-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 2 start',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_2_start',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '13:00:00',
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_3_end-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_3_end',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 3 end',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 3 end',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_end',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_3_end',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_3_end-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 3 end',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_3_end',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '19:30:00',
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_3_start-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': list([
+      None,
+    ]),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'config_subentry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'time',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'time.my_pool_filtration_interval_3_start',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'object_id_base': 'Filtration interval 3 start',
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Filtration interval 3 start',
+    'platform': 'vistapool',
+    'previous_unique_id': None,
+    'suggested_object_id': None,
+    'supported_features': 0,
+    'translation_key': 'filtration_interval_start',
+    'unique_id': 'ABCDEF1234567890-filtration_interval_3_start',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_all_entities[time.my_pool_filtration_interval_3_start-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      <EntityStateAttribute.FRIENDLY_NAME: 'friendly_name'>: 'My Pool Filtration interval 3 start',
+    }),
+    'context': <ANY>,
+    'entity_id': 'time.my_pool_filtration_interval_3_start',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '19:00:00',
+  })
+# ---
diff --git a/tests/components/vistapool/test_time.py b/tests/components/vistapool/test_time.py
new file mode 100644
index 000000000000..09ecbf0ff4b9
--- /dev/null
+++ b/tests/components/vistapool/test_time.py
@@ -0,0 +1,179 @@
+"""Tests for the Vistapool time platform."""
+
+from collections.abc import Generator
+from typing import Any
+from unittest.mock import AsyncMock, patch
+
+from aioaquarite import AquariteError
+import pytest
+from syrupy.assertion import SnapshotAssertion
+
+from homeassistant.components.time import (
+    ATTR_TIME,
+    DOMAIN as TIME_DOMAIN,
+    SERVICE_SET_VALUE,
+)
+from homeassistant.const import ATTR_ENTITY_ID, Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers import entity_registry as er
+
+from tests.common import MockConfigEntry, snapshot_platform
+
+
+@pytest.fixture(autouse=True)
+def _only_time_platform() -> Generator[None]:
+    """Restrict integration setup to the time platform for these tests."""
+    with patch("homeassistant.components.vistapool.PLATFORMS", [Platform.TIME]):
+        yield
+
+
+async def test_all_entities(
+    hass: HomeAssistant,
+    snapshot: SnapshotAssertion,
+    entity_registry: er.EntityRegistry,
+    mock_config_entry: MockConfigEntry,
+    mock_vistapool_client: AsyncMock,
+    mock_pool_data: dict[str, Any],
+) -> None:
+    """Test time entities for the default fixture."""
+    mock_vistapool_client.fetch_pool_data.return_value = mock_pool_data
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    await snapshot_platform(hass, entity_registry, snapshot, mock_config_entry.entry_id)
+
+
+async def test_time_decodes_seconds_since_midnight(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_vistapool_client: AsyncMock,
+    mock_pool_data: dict[str, Any],
+) -> None:
+    """Test the stored seconds-since-midnight are decoded to a time."""
+    mock_vistapool_client.fetch_pool_data.return_value = mock_pool_data
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    # Fixture stores interval1 from=28800 (08:00) and to=36000 (10:00).
+    assert hass.states.get("time.my_pool_filtration_interval_1_start").state == (
+        "08:00:00"
+    )
+    assert hass.states.get("time.my_pool_filtration_interval_1_end").state == "10:00:00"
+
+
+@pytest.mark.parametrize(
+    "raw_value",
+    [
+        pytest.param("garbage", id="non_numeric"),
+        pytest.param(None, id="missing"),
+        pytest.param(86400, id="out_of_range_high"),
+        pytest.param(-60, id="negative"),
+    ],
+)
+async def test_time_native_value_unknown_when_unparsable(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_vistapool_client: AsyncMock,
+    raw_value: Any,
+) -> None:
+    """Test an unparsable or out-of-range raw value yields an unknown state."""
+    mock_vistapool_client.fetch_pool_data.return_value = {
+        "main": {"version": 1},
+        "filtration": {"interval1": {"from": raw_value}},
+    }
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert (
+        hass.states.get("time.my_pool_filtration_interval_1_start").state == "unknown"
+    )
+
+
+@pytest.mark.parametrize(
+    ("entity_id", "time_value", "expected_path", "expected_seconds"),
+    [
+        pytest.param(
+            "time.my_pool_filtration_interval_1_start",
+            "12:30:00",
+            "filtration.interval1.from",
+            45000,
+            id="interval_1_start",
+        ),
+        pytest.param(
+            "time.my_pool_filtration_interval_2_end",
+            "12:30:00",
+            "filtration.interval2.to",
+            45000,
+            id="interval_2_end",
+        ),
+        pytest.param(
+            "time.my_pool_filtration_interval_3_start",
+            "07:05:09",
+            "filtration.interval3.from",
+            25509,
+            id="interval_3_start_with_seconds",
+        ),
+    ],
+)
+async def test_time_set_value(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_vistapool_client: AsyncMock,
+    mock_pool_data: dict[str, Any],
+    entity_id: str,
+    time_value: str,
+    expected_path: str,
+    expected_seconds: int,
+) -> None:
+    """Test set_value encodes the time as seconds since midnight at the right path."""
+    mock_vistapool_client.fetch_pool_data.return_value = mock_pool_data
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    await hass.services.async_call(
+        TIME_DOMAIN,
+        SERVICE_SET_VALUE,
+        {ATTR_ENTITY_ID: entity_id, ATTR_TIME: time_value},
+        blocking=True,
+    )
+
+    mock_vistapool_client.set_value.assert_awaited_once_with(
+        "ABCDEF1234567890", expected_path, expected_seconds
+    )
+    assert hass.states.get(entity_id).state == time_value
+
+
+async def test_time_set_value_raises_on_api_error(
+    hass: HomeAssistant,
+    mock_config_entry: MockConfigEntry,
+    mock_vistapool_client: AsyncMock,
+    mock_pool_data: dict[str, Any],
+) -> None:
+    """Test set_value re-raises as HomeAssistantError when the library fails."""
+    mock_vistapool_client.fetch_pool_data.return_value = mock_pool_data
+    mock_vistapool_client.set_value.side_effect = AquariteError("boom")
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    with pytest.raises(HomeAssistantError) as excinfo:
+        await hass.services.async_call(
+            TIME_DOMAIN,
+            SERVICE_SET_VALUE,
+            {
+                ATTR_ENTITY_ID: "time.my_pool_filtration_interval_1_start",
+                ATTR_TIME: "12:30:00",
+            },
+            blocking=True,
+        )
+    assert excinfo.value.translation_key == "set_failed"