diff --git a/packages/devices/purifier.yaml b/packages/devices/purifier.yaml
index 495d0c8..91f839f 100644
--- a/packages/devices/purifier.yaml
+++ b/packages/devices/purifier.yaml
@@ -1,57 +1,57 @@
 # Philips Purifier
+# https://github.com/xMrVizzy/Philips-AirPurifier
 fan:
   platform: philips-airpurifier
   host: !secret philips_purifier_ip
 
 sensor:
-  # Philips Purifier sensors
   - platform: template
     sensors:
       purifier_air_quality:
-        friendly_name: "Air quality"
+        friendly_name: Air quality
         value_template: "{{ states.fan.philips_airpurifier.attributes.pm25 }}"
       purifier_humidity:
-        friendly_name: "Humidity"
+        friendly_name: Humidity
         unit_of_measurement: "%"
         value_template: "{{ states.fan.philips_airpurifier.attributes.humidity }}"
       purifier_temperature:
-        friendly_name: "Temperature"
+        friendly_name: Temperature
         unit_of_measurement: "°C"
         value_template: "{{ states.fan.philips_airpurifier.attributes.temperature }}"
       purifier_speed:
-        friendly_name: "Speed"
+        friendly_name: Speed
         value_template: "{{ states.fan.philips_airpurifier.attributes.speed }}"
       purifier_allergens:
-        friendly_name: "Allergen index"
+        friendly_name: Allergen index
         value_template: "{{ states.fan.philips_airpurifier.attributes.allergen_index }}"
       purifier_mode:
-        friendly_name: "Mode"
+        friendly_name: Mode
         value_template: "{{ states.fan.philips_airpurifier.attributes.function }}"
       purifier_pre_filter:
-        friendly_name: "Pre-filter"
+        friendly_name: Pre-filter
         unit_of_measurement: "Hrs"
         value_template: "{{ states.fan.philips_airpurifier.attributes.pre_filter }}"
       purifier_wick_filter:
-        friendly_name: "Wick filter"
+        friendly_name: Wick filter
         unit_of_measurement: "Hrs"
         value_template: "{{ states.fan.philips_airpurifier.attributes.wick_filter }}"
       purifier_carbon_filter:
-        friendly_name: "Carbon filter"
+        friendly_name: Carbon filter
         unit_of_measurement: "Hrs"
         value_template: "{{ states.fan.philips_airpurifier.attributes.carbon_filter }}"
       purifier_hepa_filter:
-        friendly_name: "HEPA filter"
+        friendly_name: HEPA filter
         unit_of_measurement: "Hrs"
         value_template: "{{ states.fan.philips_airpurifier.attributes.hepa_filter}}"
       purifier_target_humidity:
-        friendly_name: "Target humidity"
+        friendly_name: Target humidity
         unit_of_measurement: "%"
         value_template: "{{ states.fan.philips_airpurifier.attributes.target_humidity }}"
       purifier_water_level:
-        friendly_name: "Water level"
+        friendly_name: Water level
         unit_of_measurement: "%"
         value_template: "{{ states.fan.philips_airpurifier.attributes.water_level }}"
       purifier_brightness:
-        friendly_name: "brightness"
+        friendly_name: brightness
         unit_of_measurement: "%"
         value_template: "{{ states.fan.philips_airpurifier.attributes.light_brightness }}"