diff --git a/homeassistant/components/template/__init__.py b/homeassistant/components/template/__init__.py
index efa99342699..d3cfda2d4eb 100644
--- a/homeassistant/components/template/__init__.py
+++ b/homeassistant/components/template/__init__.py
@@ -7,9 +7,14 @@ import logging
 
 from homeassistant import config as conf_util
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_DEVICE_ID, CONF_UNIQUE_ID, SERVICE_RELOAD
+from homeassistant.const import (
+    CONF_DEVICE_ID,
+    CONF_NAME,
+    CONF_UNIQUE_ID,
+    SERVICE_RELOAD,
+)
 from homeassistant.core import Event, HomeAssistant, ServiceCall
-from homeassistant.exceptions import HomeAssistantError
+from homeassistant.exceptions import ConfigEntryError, HomeAssistantError
 from homeassistant.helpers import discovery
 from homeassistant.helpers.device import (
     async_remove_stale_devices_links_keep_current_device,
@@ -19,7 +24,7 @@ from homeassistant.helpers.service import async_register_admin_service
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import async_get_integration
 
-from .const import CONF_TRIGGER, DOMAIN, PLATFORMS
+from .const import CONF_MAX, CONF_MIN, CONF_STEP, CONF_TRIGGER, DOMAIN, PLATFORMS
 from .coordinator import TriggerUpdateCoordinator
 
 _LOGGER = logging.getLogger(__name__)
@@ -67,6 +72,15 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
         entry.options.get(CONF_DEVICE_ID),
     )
 
+    for key in (CONF_MAX, CONF_MIN, CONF_STEP):
+        if key not in entry.options:
+            continue
+        if isinstance(entry.options[key], str):
+            raise ConfigEntryError(
+                f"The '{entry.options.get(CONF_NAME) or ""}' number template needs to "
+                f"be reconfigured, {key} must be a number, got '{entry.options[key]}'"
+            )
+
     await hass.config_entries.async_forward_entry_setups(
         entry, (entry.options["template_type"],)
     )
diff --git a/homeassistant/components/template/config_flow.py b/homeassistant/components/template/config_flow.py
index 2c12a0d03e9..ba4f4a78f53 100644
--- a/homeassistant/components/template/config_flow.py
+++ b/homeassistant/components/template/config_flow.py
@@ -107,15 +107,15 @@ def generate_schema(domain: str, flow_type: str) -> vol.Schema:
     if domain == Platform.NUMBER:
         schema |= {
             vol.Required(CONF_STATE): selector.TemplateSelector(),
-            vol.Required(
-                CONF_MIN, default=f"{{{{{DEFAULT_MIN_VALUE}}}}}"
-            ): selector.TemplateSelector(),
-            vol.Required(
-                CONF_MAX, default=f"{{{{{DEFAULT_MAX_VALUE}}}}}"
-            ): selector.TemplateSelector(),
-            vol.Required(
-                CONF_STEP, default=f"{{{{{DEFAULT_STEP}}}}}"
-            ): selector.TemplateSelector(),
+            vol.Required(CONF_MIN, default=DEFAULT_MIN_VALUE): selector.NumberSelector(
+                selector.NumberSelectorConfig(mode=selector.NumberSelectorMode.BOX),
+            ),
+            vol.Required(CONF_MAX, default=DEFAULT_MAX_VALUE): selector.NumberSelector(
+                selector.NumberSelectorConfig(mode=selector.NumberSelectorMode.BOX),
+            ),
+            vol.Required(CONF_STEP, default=DEFAULT_STEP): selector.NumberSelector(
+                selector.NumberSelectorConfig(mode=selector.NumberSelectorMode.BOX),
+            ),
             vol.Optional(CONF_SET_VALUE): selector.ActionSelector(),
         }
 
diff --git a/homeassistant/components/template/const.py b/homeassistant/components/template/const.py
index 8b4e46ba383..89df87b4031 100644
--- a/homeassistant/components/template/const.py
+++ b/homeassistant/components/template/const.py
@@ -28,11 +28,14 @@ PLATFORMS = [
     Platform.WEATHER,
 ]
 
-CONF_AVAILABILITY = "availability"
-CONF_ATTRIBUTES = "attributes"
 CONF_ATTRIBUTE_TEMPLATES = "attribute_templates"
+CONF_ATTRIBUTES = "attributes"
+CONF_AVAILABILITY = "availability"
+CONF_MAX = "max"
+CONF_MIN = "min"
+CONF_OBJECT_ID = "object_id"
 CONF_PICTURE = "picture"
 CONF_PRESS = "press"
-CONF_OBJECT_ID = "object_id"
+CONF_STEP = "step"
 CONF_TURN_OFF = "turn_off"
 CONF_TURN_ON = "turn_on"
diff --git a/homeassistant/components/template/number.py b/homeassistant/components/template/number.py
index 499ddc192cc..e051f124149 100644
--- a/homeassistant/components/template/number.py
+++ b/homeassistant/components/template/number.py
@@ -31,7 +31,7 @@ from homeassistant.helpers.script import Script
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
 from . import TriggerUpdateCoordinator
-from .const import DOMAIN
+from .const import CONF_MAX, CONF_MIN, CONF_STEP, DOMAIN
 from .template_entity import (
     TEMPLATE_ENTITY_AVAILABILITY_SCHEMA,
     TEMPLATE_ENTITY_ICON_SCHEMA,
@@ -42,9 +42,6 @@ from .trigger_entity import TriggerEntity
 _LOGGER = logging.getLogger(__name__)
 
 CONF_SET_VALUE = "set_value"
-CONF_MIN = "min"
-CONF_MAX = "max"
-CONF_STEP = "step"
 
 DEFAULT_NAME = "Template Number"
 DEFAULT_OPTIMISTIC = False
diff --git a/tests/components/template/test_config_flow.py b/tests/components/template/test_config_flow.py
index f8ab190e664..ee748ce41f5 100644
--- a/tests/components/template/test_config_flow.py
+++ b/tests/components/template/test_config_flow.py
@@ -98,9 +98,9 @@ from tests.typing import WebSocketGenerator
             {"one": "30.0", "two": "20.0"},
             {},
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": "0",
+                "max": "100",
+                "step": "0.1",
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -108,9 +108,9 @@ from tests.typing import WebSocketGenerator
                 },
             },
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -258,14 +258,14 @@ async def test_config_flow(
             "number",
             {"state": "{{ states('number.one') }}"},
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": "0",
+                "max": "100",
+                "step": "0.1",
             },
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
             },
         ),
         (
@@ -451,9 +451,9 @@ def get_suggested(schema, key):
             ["30.0", "20.0"],
             {"one": "30.0", "two": "20.0"},
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -461,9 +461,9 @@ def get_suggested(schema, key):
                 },
             },
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -1230,14 +1230,14 @@ async def test_option_flow_sensor_preview_config_entry_removed(
             "number",
             {"state": "{{ states('number.one') }}"},
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
             },
             {
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
             },
         ),
         (
diff --git a/tests/components/template/test_init.py b/tests/components/template/test_init.py
index 3b4db4bf668..0de57062984 100644
--- a/tests/components/template/test_init.py
+++ b/tests/components/template/test_init.py
@@ -319,9 +319,9 @@ async def async_yaml_patch_helper(hass: HomeAssistant, filename: str) -> None:
                 "template_type": "number",
                 "name": "My template",
                 "state": "{{ 10 }}",
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -330,9 +330,9 @@ async def async_yaml_patch_helper(hass: HomeAssistant, filename: str) -> None:
             },
             {
                 "state": "{{ 11 }}",
-                "min": "{{ 0 }}",
-                "max": "{{ 100 }}",
-                "step": "{{ 0.1 }}",
+                "min": 0,
+                "max": 100,
+                "step": 0.1,
                 "set_value": {
                     "action": "input_number.set_value",
                     "target": {"entity_id": "input_number.test"},
@@ -454,3 +454,40 @@ async def test_change_device(
         )
         == []
     )
+
+
+async def test_fail_non_numerical_number_settings(
+    hass: HomeAssistant, caplog: pytest.LogCaptureFixture
+) -> None:
+    """Test that non numerical number options causes config entry setup to fail.
+
+    Support for non numerical max, min and step was added in HA Core 2024.9.0 and
+    removed in HA Core 2024.9.1.
+    """
+
+    options = {
+        "template_type": "number",
+        "name": "My template",
+        "state": "{{ 10 }}",
+        "min": "{{ 0 }}",
+        "max": "{{ 100 }}",
+        "step": "{{ 0.1 }}",
+        "set_value": {
+            "action": "input_number.set_value",
+            "target": {"entity_id": "input_number.test"},
+            "data": {"value": "{{ value }}"},
+        },
+    }
+    # Setup the config entry
+    template_config_entry = MockConfigEntry(
+        data={},
+        domain=DOMAIN,
+        options=options,
+        title="Template",
+    )
+    template_config_entry.add_to_hass(hass)
+    assert not await hass.config_entries.async_setup(template_config_entry.entry_id)
+    assert (
+        "The 'My template' number template needs to be reconfigured, "
+        "max must be a number, got '{{ 100 }}'" in caplog.text
+    )
diff --git a/tests/components/template/test_number.py b/tests/components/template/test_number.py
index fdca94d9fa4..43decf848ff 100644
--- a/tests/components/template/test_number.py
+++ b/tests/components/template/test_number.py
@@ -58,9 +58,9 @@ async def test_setup_config_entry(
             "name": "My template",
             "template_type": "number",
             "state": "{{ 10 }}",
-            "min": "{{ 0 }}",
-            "max": "{{ 100 }}",
-            "step": "{{ 0.1 }}",
+            "min": 0,
+            "max": 100,
+            "step": 0.1,
             "set_value": {
                 "action": "input_number.set_value",
                 "target": {"entity_id": "input_number.test"},
@@ -524,9 +524,9 @@ async def test_device_id(
             "name": "My template",
             "template_type": "number",
             "state": "{{ 10 }}",
-            "min": "{{ 0 }}",
-            "max": "{{ 100 }}",
-            "step": "{{ 0.1 }}",
+            "min": 0,
+            "max": 100,
+            "step": 0.1,
             "set_value": {
                 "action": "input_number.set_value",
                 "target": {"entity_id": "input_number.test"},