diff --git a/config/packages/modules/climate/purifier.yaml b/config/packages/modules/climate/purifier.yaml
index 6497275..ad6ce32 100644
--- a/config/packages/modules/climate/purifier.yaml
+++ b/config/packages/modules/climate/purifier.yaml
@@ -32,7 +32,6 @@ sensor:
         friendly_name: Air quality
         value_template: "{{ state_attr('fan.philips_airpurifier', 'pm25') }}"
         icon_template: mdi:weather-windy
-        unit_of_measurement: "pm2.5"
       purifier_humidity:
         friendly_name: Humidity
         unit_of_measurement: "%"