diff --git a/.strict-typing b/.strict-typing
index 6f2a4c33a83..e35d5439844 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -129,6 +129,7 @@ homeassistant.components.greeneye_monitor.*
 homeassistant.components.group.*
 homeassistant.components.guardian.*
 homeassistant.components.hardkernel.*
+homeassistant.components.hardware.*
 homeassistant.components.history.*
 homeassistant.components.homeassistant.triggers.event
 homeassistant.components.homeassistant_alerts.*
diff --git a/homeassistant/components/hardware/hardware.py b/homeassistant/components/hardware/hardware.py
index e07f70022f4..cc904fbf131 100644
--- a/homeassistant/components/hardware/hardware.py
+++ b/homeassistant/components/hardware/hardware.py
@@ -11,18 +11,16 @@ from .const import DOMAIN
 from .models import HardwareProtocol
 
 
-async def async_process_hardware_platforms(hass: HomeAssistant):
+async def async_process_hardware_platforms(hass: HomeAssistant) -> None:
     """Start processing hardware platforms."""
     hass.data[DOMAIN]["hardware_platform"] = {}
 
     await async_process_integration_platforms(hass, DOMAIN, _register_hardware_platform)
 
-    return True
-
 
 async def _register_hardware_platform(
     hass: HomeAssistant, integration_domain: str, platform: HardwareProtocol
-):
+) -> None:
     """Register a hardware platform."""
     if integration_domain == DOMAIN:
         return
diff --git a/homeassistant/components/hardware/websocket_api.py b/homeassistant/components/hardware/websocket_api.py
index d8dc5f28fdd..66b90edc893 100644
--- a/homeassistant/components/hardware/websocket_api.py
+++ b/homeassistant/components/hardware/websocket_api.py
@@ -74,7 +74,7 @@ async def ws_info(
 @websocket_api.async_response
 async def ws_subscribe_system_status(
     hass: HomeAssistant, connection: websocket_api.ActiveConnection, msg: dict[str, Any]
-):
+) -> None:
     """Subscribe to system status updates."""
 
     system_status: SystemStatus = hass.data[DOMAIN]["system_status"]
diff --git a/mypy.ini b/mypy.ini
index c7e86780ef5..9f2c0e6fbd6 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1044,6 +1044,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.hardware.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.history.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true