diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 33e17d0..032b57b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,6 +10,17 @@ repos:
       - id: ruff         # linter
       - id: ruff-format  # formatter
 
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.3.0
+    hooks:
+      - id: codespell
+        args:
+          - --ignore-words-list=hass,wont
+          - --skip="./.*,*.csv,*.json,*.ambr"
+          - --quiet-level=2
+        exclude_types: [csv, json, html]
+        exclude: ^tests/fixtures/|tests/snapshots/
+
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.6.0
     hooks:
diff --git a/custom_components/ramses_cc/services.yaml b/custom_components/ramses_cc/services.yaml
index ad2d2c8..ebc35b8 100644
--- a/custom_components/ramses_cc/services.yaml
+++ b/custom_components/ramses_cc/services.yaml
@@ -105,7 +105,7 @@ get_system_faults:
 
     num_entries:
       description: >-
-        The number of fault log entries to retreive. Default is 8.
+        The number of fault log entries to retrieve. Default is 8.
       example: 8
       selector:
         number:
diff --git a/tests/tests_new/test_init.py b/tests/tests_new/test_init.py
index 9c1d318..82c6185 100644
--- a/tests/tests_new/test_init.py
+++ b/tests/tests_new/test_init.py
@@ -41,5 +41,5 @@ async def test_entities(
 
         assert hass.states.async_all() == snapshot
 
-    finally:  # Prevent non-useful errors in teardown
+    finally:  # Prevent useless errors in teardown
         assert await hass.config_entries.async_unload(entry.entry_id)
diff --git a/tests/virtual_rf/virtual_rf.py b/tests/virtual_rf/virtual_rf.py
index f232a75..9c9f15c 100644
--- a/tests/virtual_rf/virtual_rf.py
+++ b/tests/virtual_rf/virtual_rf.py
@@ -219,8 +219,8 @@ async def stop(self) -> None:
     def _cleanup(self) -> None:
         """Destroy file objects and file descriptors."""
 
-        for fo in self._port_to_object.values():
-            fo.close()  # also closes corresponding master fd
+        for fp in self._port_to_object.values():
+            fp.close()  # also closes corresponding master fd
         for fd in self._port_to_slave_.values():
             os.close(fd)  # else this slave fd will persist
 
@@ -234,8 +234,8 @@ async def _poll_ports_for_data(self) -> None:
         """Send data received from any one port (as .write(data)) to all other ports."""
 
         with contextlib.ExitStack() as stack:
-            for fo in self._port_to_object.values():
-                stack.enter_context(fo)
+            for fp in self._port_to_object.values():
+                stack.enter_context(fp)
 
             while True:
                 for key, _ in self._selector.select(timeout=0):
@@ -264,7 +264,7 @@ def _cast_frame_to_all_ports(self, src_port: _PN, frame: bytes) -> None:
         for dst_port in self._port_to_master:
             self._push_frame_to_dst_port(dst_port, frame)
 
-        # see if there is a faked reponse (RP/I) for a given command (RQ/W)
+        # see if there is a faked response (RP/I) for a given command (RQ/W)
         if not (reply := self._find_reply_for_cmd(frame)):
             return