Configurable Unit of Measurement #133

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1. Nubosch

   added

   enhancementNew feature or improvementNew feature or improvement

   on Apr 9, 2026
2. bvweerd commented on Apr 9, 2026

   

   bvweerd

   on Apr 9, 2026

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   Hi,

   Thanks for your contribution.

   Home assistant does not allow to configure the unit of a sensor in the config or options flow, see https://developers.home-assistant.io/blog/2022/12/07/unit_system_changes/.

   In the case you would like to have a unit conversion without changing the code, please use a template helper sensor.
3. Nubosch commented on Apr 10, 2026

   

   Nubosch

   on Apr 10, 2026

   Last edited by Nubosch

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   Many thanks for your fast response.

   Maybe I was talking more about the device_class than the unit of measurement itself. I got confused since the UI did not contain any user modifiable unit. The number integration itself supports device_class, afaik. Why I set it for many of my own number entities, resulting in user/display choices for the unit. Having some way to tell HA how to treat the numbers from the PIDs would be nice, but I can find my way around it. Thanks for your suggestion.

   Note: following customization gives the desired result for me

   configuration.yaml

   homeassistant:
     customize: !include customize.yaml

   customize.yaml

   number.setpoint_hcd_ground_floor_pid_01:
     device_class: temperature
     unit_of_measurement: C°
4. bvweerd commented on Apr 11, 2026

   

   bvweerd

   on Apr 11, 2026

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   Thanks for elaborating, I've added your approach to the readme!
5. bvweerd

   closed this as completedon Apr 11, 2026