diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2ad8a84..841816f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,10 +11,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+
+      - name: Get changed YAML files
+        id: changed
+        uses: tj-actions/changed-files@v46
+        with:
+          files: "**/*.yaml"
+
       - uses: ibiqlik/action-yamllint@v3
+        if: steps.changed.outputs.any_changed == 'true'
         with:
           config_file: .yamllint.yml
-          file_or_dir: "*.yaml common/**/*.yaml"
+          file_or_dir: ${{ steps.changed.outputs.all_changed_files }}
 
   validate:
     name: ESPHome config validation
diff --git a/.yamllint.yml b/.yamllint.yml
index 067c610..9aca8ad 100644
--- a/.yamllint.yml
+++ b/.yamllint.yml
@@ -3,7 +3,7 @@ extends: default
 rules:
   # ESPHome uses True/False (Python style) and yes/no
   truthy:
-    allowed-values: ["true", "false", "True", "False", "yes", "no"]
+    allowed-values: ["true", "false", "True", "False", "yes", "no", "on", "off", "ON", "OFF"]
     check-keys: false
 
   # Lambdas and long substitutions can exceed 80 chars
@@ -17,6 +17,5 @@ rules:
   # Some files have trailing spaces; warn only
   trailing-spaces: enable
 
-  # Allow comments without a space after # in some cases (e.g. # noqa)
   comments:
-    min-spaces-before-comment: 1
+    require-starting-space: false
diff --git a/mcu-pow-dishwasher.yaml b/mcu-pow-dishwasher.yaml
index e2be21b..6ef30d7 100644
--- a/mcu-pow-dishwasher.yaml
+++ b/mcu-pow-dishwasher.yaml
@@ -20,10 +20,10 @@ packages:
   common: !include common/common.yaml
 
 uart:
-- id: cse7766_uart
-  rx_pin: 16
-  baud_rate: 4800
-  parity: EVEN
+  - id: cse7766_uart
+    rx_pin: 16
+    baud_rate: 4800
+    parity: EVEN
 
 binary_sensor:
   - platform: gpio
@@ -82,7 +82,7 @@ display:
       it.display_kwh(false);
       it.printf(0, "%.1f", id(v_sensor).state);
       it.printf(1, "%.1f", id(a_sensor).state);
-    } else {  
+    } else {
       it.display_voltage(false);
       it.display_kwh(true);
       it.printf(0, "%.1f", id(wh_sensor).state);
@@ -183,4 +183,4 @@ switch:
     interlock: [relay_on]
 
 time:
-  - !include common/time/homeassistant.yaml
\ No newline at end of file
+  - !include common/time/homeassistant.yaml
diff --git a/mcu-pow-washer.yaml b/mcu-pow-washer.yaml
index e36860f..424868c 100644
--- a/mcu-pow-washer.yaml
+++ b/mcu-pow-washer.yaml
@@ -20,10 +20,10 @@ packages:
   common: !include common/common.yaml
 
 uart:
-- id: cse7766_uart
-  rx_pin: 16
-  baud_rate: 4800
-  parity: EVEN
+  - id: cse7766_uart
+    rx_pin: 16
+    baud_rate: 4800
+    parity: EVEN
 
 binary_sensor:
   - platform: gpio
@@ -82,7 +82,7 @@ display:
       it.display_kwh(false);
       it.printf(0, "%.1f", id(v_sensor).state);
       it.printf(1, "%.1f", id(a_sensor).state);
-    } else {  
+    } else {
       it.display_voltage(false);
       it.display_kwh(true);
       it.printf(0, "%.1f", id(wh_sensor).state);
@@ -183,4 +183,4 @@ switch:
     interlock: [relay_on]
 
 time:
-  - !include common/time/homeassistant.yaml
\ No newline at end of file
+  - !include common/time/homeassistant.yaml