diff --git a/homeassistant/loader.py b/homeassistant/loader.py
index f6da5048d45..9e326f00ffd 100644
--- a/homeassistant/loader.py
+++ b/homeassistant/loader.py
@@ -129,7 +129,7 @@ class Manifest(TypedDict, total=False):
     name: str
     disabled: str
     domain: str
-    integration_type: Literal["integration", "helper"]
+    integration_type: Literal["integration", "hardware", "helper"]
     dependencies: list[str]
     after_dependencies: list[str]
     requirements: list[str]
@@ -558,7 +558,7 @@ class Integration:
         return self.manifest.get("iot_class")
 
     @property
-    def integration_type(self) -> Literal["integration", "helper"]:
+    def integration_type(self) -> Literal["integration", "hardware", "helper"]:
         """Return the integration type."""
         return self.manifest.get("integration_type", "integration")
 
diff --git a/script/hassfest/config_flow.py b/script/hassfest/config_flow.py
index c3c5610a48f..b5af4da6cb4 100644
--- a/script/hassfest/config_flow.py
+++ b/script/hassfest/config_flow.py
@@ -18,7 +18,7 @@ FLOWS = {}
 UNIQUE_ID_IGNORE = {"huawei_lte", "mqtt", "adguard"}
 
 
-def validate_integration(config: Config, integration: Integration):
+def _validate_integration(config: Config, integration: Integration):
     """Validate config flow of an integration."""
     config_flow_file = integration.path / "config_flow.py"
 
@@ -67,7 +67,7 @@ def validate_integration(config: Config, integration: Integration):
     )
 
 
-def generate_and_validate(integrations: dict[str, Integration], config: Config):
+def _generate_and_validate(integrations: dict[str, Integration], config: Config):
     """Validate and generate config flow data."""
     domains = {
         "integration": [],
@@ -80,7 +80,7 @@ def generate_and_validate(integrations: dict[str, Integration], config: Config):
         if not integration.manifest or not integration.config_flow:
             continue
 
-        validate_integration(config, integration)
+        _validate_integration(config, integration)
 
         domains[integration.integration_type].append(domain)
 
@@ -90,7 +90,7 @@ def generate_and_validate(integrations: dict[str, Integration], config: Config):
 def validate(integrations: dict[str, Integration], config: Config):
     """Validate config flow file."""
     config_flow_path = config.root / "homeassistant/generated/config_flows.py"
-    config.cache["config_flow"] = content = generate_and_validate(integrations, config)
+    config.cache["config_flow"] = content = _generate_and_validate(integrations, config)
 
     if config.specific_integrations:
         return
diff --git a/script/hassfest/model.py b/script/hassfest/model.py
index d4e1fbf806a..ab0de56077d 100644
--- a/script/hassfest/model.py
+++ b/script/hassfest/model.py
@@ -127,7 +127,7 @@ class Integration:
         self.errors.append(Error(*args, **kwargs))
 
     def add_warning(self, *args: Any, **kwargs: Any) -> None:
-        """Add an warning."""
+        """Add a warning."""
         self.warnings.append(Error(*args, **kwargs))
 
     def load_manifest(self) -> None: