diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 503a50c5c2..c043c25936 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -345,20 +345,31 @@ jobs:
         run: script/ci-suggest-changes
         if: always()
 
+  clang-tidy-deps:
+    name: Clang-tidy dependencies
+    runs-on: ubuntu-24.04
+    needs:
+      - common
+      - ci-custom
+      - clang-format
+      - pytest
+      - determine-jobs
+    if: |
+      always() &&
+      needs.determine-jobs.outputs.clang-tidy == 'true'
+    steps:
+      - run: echo "All clang-tidy dependencies ready"
+
   clang-tidy:
     name: ${{ matrix.name }}
     runs-on: ubuntu-24.04
     needs:
-      - common
-      - ruff
-      - ci-custom
-      - clang-format
-      - flake8
-      - pylint
-      - pytest
-      - pyupgrade
+      - clang-tidy-deps
       - determine-jobs
-    if: needs.determine-jobs.outputs.clang-tidy == 'true'
+    if: |
+      always() &&
+      needs.determine-jobs.outputs.clang-tidy == 'true' &&
+      needs.clang-tidy-deps.result == 'success'
     env:
       GH_TOKEN: ${{ github.token }}
     strategy:
@@ -575,6 +586,7 @@ jobs:
       - pytest
       - integration-tests
       - pyupgrade
+      - clang-tidy-deps
       - clang-tidy
       - determine-jobs
       - test-build-components
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9c7955cc88..203808c88b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,13 @@
 ---
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
+
+ci:
+  autoupdate_commit_msg: 'pre-commit: autoupdate'
+  autoupdate_schedule: weekly
+  # Skip hooks that have issues in pre-commit CI environment
+  skip: [pylint, clang-tidy-hash, yamllint]
+
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
diff --git a/esphome/components/substitutions/__init__.py b/esphome/components/substitutions/__init__.py
index 5c346ea616..e494529b9e 100644
--- a/esphome/components/substitutions/__init__.py
+++ b/esphome/components/substitutions/__init__.py
@@ -146,8 +146,11 @@ def _substitute_item(substitutions, item, path, jinja, ignore_missing):
             if sub is not None:
                 item[k] = sub
         for old, new in replace_keys:
-            item[new] = merge_config(item.get(old), item.get(new))
-            del item[old]
+            if str(new) == str(old):
+                item[new] = item[old]
+            else:
+                item[new] = merge_config(item.get(old), item.get(new))
+                del item[old]
     elif isinstance(item, str):
         sub = _expand_substitutions(substitutions, item, path, jinja, ignore_missing)
         if isinstance(sub, JinjaStr) or sub != item:
diff --git a/tests/unit_tests/fixtures/substitutions/00-simple_var.approved.yaml b/tests/unit_tests/fixtures/substitutions/00-simple_var.approved.yaml
index c031399c37..f5d2f8aa20 100644
--- a/tests/unit_tests/fixtures/substitutions/00-simple_var.approved.yaml
+++ b/tests/unit_tests/fixtures/substitutions/00-simple_var.approved.yaml
@@ -17,3 +17,5 @@ test_list:
   - ${undefined_var}
   - $undefined_var
   - ${ undefined_var }
+  - key1: 1
+    key2: 2
diff --git a/tests/unit_tests/fixtures/substitutions/00-simple_var.input.yaml b/tests/unit_tests/fixtures/substitutions/00-simple_var.input.yaml
index 88a4ffb991..5717433c7e 100644
--- a/tests/unit_tests/fixtures/substitutions/00-simple_var.input.yaml
+++ b/tests/unit_tests/fixtures/substitutions/00-simple_var.input.yaml
@@ -19,3 +19,5 @@ test_list:
   - ${undefined_var}
   - $undefined_var
   - ${ undefined_var }
+  - key${var1}: 1
+    key${var2}: 2
diff --git a/tests/unit_tests/fixtures/substitutions/03-closures.approved.yaml b/tests/unit_tests/fixtures/substitutions/03-closures.approved.yaml
index c8f7d9976c..dad3be8aa7 100644
--- a/tests/unit_tests/fixtures/substitutions/03-closures.approved.yaml
+++ b/tests/unit_tests/fixtures/substitutions/03-closures.approved.yaml
@@ -6,6 +6,7 @@ package_result:
     root file
   - Double substitution also works; the value of var7 is 79, where A is a package
     var
+  - key79: Key should substitute to key79
 local_results:
   - The value of B is 5
   - 'You will see, however, that
diff --git a/tests/unit_tests/fixtures/substitutions/closures_package.yaml b/tests/unit_tests/fixtures/substitutions/closures_package.yaml
index e87908814d..4a0be24b93 100644
--- a/tests/unit_tests/fixtures/substitutions/closures_package.yaml
+++ b/tests/unit_tests/fixtures/substitutions/closures_package.yaml
@@ -1,3 +1,4 @@
 package_result:
   - The value of A*B is ${A * B}, where A is a package var and B is a substitution in the root file
   - Double substitution also works; the value of var7 is ${var$A}, where A is a package var
+  - key${var7}: Key should substitute to key79