[EN] Including degree symbol in HassClimateSetTemperature temperature causes an error

[jackwilsdon]

Including the degree symbol (°) in the HassClimateSetTemperature command in English causes a ValueError:

stage: done
run:
  pipeline: 01hjsafjatqb7n37tpj8r6n7m8
  language: en
  conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
  runner_data:
    stt_binary_handler_id: null
    timeout: 300
events:
  - type: run-start
    data:
      pipeline: 01hjsafjatqb7n37tpj8r6n7m8
      language: en
      conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
      runner_data:
        stt_binary_handler_id: null
        timeout: 300
    timestamp: "2025-12-17T18:03:33.058799+00:00"
  - type: intent-start
    data:
      engine: conversation.home_assistant
      language: en
      intent_input: Set the living room heating to 22°
      conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
      device_id: null
      satellite_id: null
      prefer_local_intents: false
    timestamp: "2025-12-17T18:03:33.058930+00:00"
  - type: intent-end
    data:
      processed_locally: true
      intent_output:
        response:
          speech:
            plain:
              speech: >-
                ValueError: Template error: float got invalid input '22°' when
                rendering template 'Temperature set to {{ slots.temperature }}
                {{ 'degree' if (slots.temperature | float) == 1 else 'degrees'
                }}' but no default was specified
              extra_data: null
          card: {}
          language: en
          response_type: error
          data:
            code: unknown
        conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
        continue_conversation: false
    timestamp: "2025-12-17T18:03:33.281913+00:00"
  - type: run-end
    data: null
    timestamp: "2025-12-17T18:03:33.282112+00:00"
started: 2025-12-17T18:03:33.058Z
intent:
  engine: conversation.home_assistant
  language: en
  intent_input: Set the living room heating to 22°
  conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
  device_id: null
  satellite_id: null
  prefer_local_intents: false
  done: true
  processed_locally: true
  intent_output:
    response:
      speech:
        plain:
          speech: >-
            ValueError: Template error: float got invalid input '22°' when
            rendering template 'Temperature set to {{ slots.temperature }} {{
            'degree' if (slots.temperature | float) == 1 else 'degrees' }}' but
            no default was specified
          extra_data: null
      card: {}
      language: en
      response_type: error
      data:
        code: unknown
    conversation_id: 01KCPQNXPHN1RCQSX5G2GVXXV9
    continue_conversation: false
finished: 2025-12-17T18:03:33.282Z

It seems like the symbol is being incorrectly included in the temperature slot.

[v1k70rk4]

Who on earth is manually typing "22°" into a voice assistant? 😄
No STT engine in existence will ever output a degree symbol. It'll give you "twenty two degrees", or "22 degrees", or just "22". That ° was lovingly hand-typed by a human.
So the "bug" here is that float('22°') raises a ValueError, which... yes, that's what floats do when you feed them Unicode symbols. Technically, sure, the parser could strip non-numeric characters before casting, but this is like typing "turn on the light 💡" and filing a bug that the lightbulb emoji confused the intent matcher.
This isn't a voice assistant issue. This is a "I typed a special character into a text input and it broke" issue. The fix is: don't put the degree symbol there, the system already knows you're talking about temperature. 🙃

[jackwilsdon]

Home Assistant Cloud's STT engine outputs a degree symbol (or at least it did at the time) - that's how I found the issue originally (using a Home Assistant Voice).

[v1k70rk4]

Interesting – which STT engine are you using exactly, and which voice/model did you select within it? Different voices within the same engine can produce different output formatting. Because outputting an actual ° symbol is very unusual behavior for any speech-to-text engine. Typically they produce either the word "degrees" or just the number.

Would be good to know the exact setup so we can pinpoint where the ° is actually coming from.

[jackwilsdon]

The engine is just "Home Assistant Cloud" with the "British English" language. I can confirm it still outputs the literal ° symbol, although sometimes it outputs the word "degrees" instead.

Here's the YAML when triggering it on my Voice PE:

stage: done
run:
  pipeline: 01hjsafjatqb7n37tpj8r6n7m8
  language: en
  conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
  satellite_id: assist_satellite.office_home_assistant_voice_assist_satellite
  tts_output:
    token: V_fu4HjKLd7xQbLPK3HyOQ.flac
    url: /api/tts_proxy/V_fu4HjKLd7xQbLPK3HyOQ.flac
    mime_type: audio/flac
    stream_response: false
events:
  - type: run-start
    data:
      pipeline: 01hjsafjatqb7n37tpj8r6n7m8
      language: en
      conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
      satellite_id: assist_satellite.office_home_assistant_voice_assist_satellite
      tts_output:
        token: V_fu4HjKLd7xQbLPK3HyOQ.flac
        url: /api/tts_proxy/V_fu4HjKLd7xQbLPK3HyOQ.flac
        mime_type: audio/flac
        stream_response: false
    timestamp: "2026-02-27T17:31:52.275458+00:00"
  - type: stt-start
    data:
      engine: stt.home_assistant_cloud
      metadata:
        language: en-GB
        format: wav
        codec: pcm
        bit_rate: 16
        sample_rate: 16000
        channel: 1
    timestamp: "2026-02-27T17:31:52.276257+00:00"
  - type: stt-vad-start
    data:
      timestamp: 1050
    timestamp: "2026-02-27T17:31:53.357329+00:00"
  - type: stt-vad-end
    data:
      timestamp: 3380
    timestamp: "2026-02-27T17:31:55.651703+00:00"
  - type: stt-end
    data:
      stt_output:
        text: Set the living room heating to 22°.
    timestamp: "2026-02-27T17:31:55.685227+00:00"
  - type: intent-start
    data:
      engine: conversation.home_assistant
      language: en
      intent_input: Set the living room heating to 22°.
      conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
      device_id: a5bc8390413035b4fb0875f097d480e5
      satellite_id: assist_satellite.office_home_assistant_voice_assist_satellite
      prefer_local_intents: false
    timestamp: "2026-02-27T17:31:55.685705+00:00"
  - type: intent-end
    data:
      processed_locally: true
      intent_output:
        response:
          speech:
            plain:
              speech: >-
                ValueError: Template error: float got invalid input '22°' when
                rendering template 'Temperature set to {{ slots.temperature }}
                {{ 'degree' if (slots.temperature | float) == 1 else 'degrees'
                }}' but no default was specified
              extra_data: null
          card: {}
          language: en
          response_type: error
          data:
            code: unknown
        conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
        continue_conversation: false
    timestamp: "2026-02-27T17:31:55.886295+00:00"
  - type: tts-start
    data:
      engine: tts.home_assistant_cloud
      language: en-GB
      voice: LibbyNeural
      tts_input: >-
        ValueError: Template error: float got invalid input '22°' when rendering
        template 'Temperature set to {{ slots.temperature }} {{ 'degree' if
        (slots.temperature | float) == 1 else 'degrees' }}' but no default was
        specified
      acknowledge_override: false
    timestamp: "2026-02-27T17:31:55.889226+00:00"
  - type: tts-end
    data:
      tts_output:
        media_id: media-source://tts/-stream-/V_fu4HjKLd7xQbLPK3HyOQ.flac
        token: V_fu4HjKLd7xQbLPK3HyOQ.flac
        url: /api/tts_proxy/V_fu4HjKLd7xQbLPK3HyOQ.flac
        mime_type: audio/flac
    timestamp: "2026-02-27T17:31:55.891510+00:00"
  - type: run-end
    data: null
    timestamp: "2026-02-27T17:31:55.892318+00:00"
started: 2026-02-27T17:31:52.275Z
stt:
  engine: stt.home_assistant_cloud
  metadata:
    language: en-GB
    format: wav
    codec: pcm
    bit_rate: 16
    sample_rate: 16000
    channel: 1
  done: true
  stt_output:
    text: Set the living room heating to 22°.
intent:
  engine: conversation.home_assistant
  language: en
  intent_input: Set the living room heating to 22°.
  conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
  device_id: a5bc8390413035b4fb0875f097d480e5
  satellite_id: assist_satellite.office_home_assistant_voice_assist_satellite
  prefer_local_intents: false
  done: true
  processed_locally: true
  intent_output:
    response:
      speech:
        plain:
          speech: >-
            ValueError: Template error: float got invalid input '22°' when
            rendering template 'Temperature set to {{ slots.temperature }} {{
            'degree' if (slots.temperature | float) == 1 else 'degrees' }}' but
            no default was specified
          extra_data: null
      card: {}
      language: en
      response_type: error
      data:
        code: unknown
    conversation_id: 01KJG2ES5666BG9A5YAE2NHDRB
    continue_conversation: false
tts:
  engine: tts.home_assistant_cloud
  language: en-GB
  voice: LibbyNeural
  tts_input: >-
    ValueError: Template error: float got invalid input '22°' when rendering
    template 'Temperature set to {{ slots.temperature }} {{ 'degree' if
    (slots.temperature | float) == 1 else 'degrees' }}' but no default was
    specified
  acknowledge_override: false
  done: true
  tts_output:
    media_id: media-source://tts/-stream-/V_fu4HjKLd7xQbLPK3HyOQ.flac
    token: V_fu4HjKLd7xQbLPK3HyOQ.flac
    url: /api/tts_proxy/V_fu4HjKLd7xQbLPK3HyOQ.flac
    mime_type: audio/flac
finished: 2026-02-27T17:31:55.892Z

[v1k70rk4]

I owe you an apology – I use Home Assistant Cloud STT in three languages and none of them output the ° symbol, they all write it out as text. But I switched to en-GB and sure enough, it does output °. So you were right.

That said, on my end the intent parser handles the ° correctly – it strips it from the slot and returns "Temperature set to 22 degrees" just fine. So the ° itself might not be your actual problem.

Could you check what's going on with your entity matching? Go to Developer Tools → Assist, type the same command, and share what you see – specifically the intent match result, whether match is true or false, and if there are any unmatched_slots. I suspect living room heating might not be matching any climate entity, and that could be the real cause of your error.

Do you maybe not have some custom sentence?

intent:
  name: HassClimateSetTemperature
slots:
  name: Klíma 1
  temperature: '22'
details:
  name:
    name: name
    value: Klíma 1
    text: Klíma 1
  temperature:
    name: temperature
    value: 22
    text: '22'
targets:
  climate.midea_ac_144036023355376:
    matched: true
match: true
sentence_template: (<numeric_value_set>|adjust) <name> [<temp>] to <temperature>
unmatched_slots: {}
fuzzy_match: false

stage: done
run:
  pipeline: 01kjg4tq4ntp50seymtc38rzs9
  language: en
  conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
  runner_data:
    stt_binary_handler_id: null
    timeout: 300
events:
  - type: run-start
    data:
      pipeline: 01kjg4tq4ntp50seymtc38rzs9
      language: en
      conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
      runner_data:
        stt_binary_handler_id: null
        timeout: 300
    timestamp: "2026-02-27T18:31:48.934920+00:00"
  - type: intent-start
    data:
      engine: conversation.home_assistant
      language: en
      intent_input: "  Set the Klíma 1 to 22°."
      conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
      device_id: null
      satellite_id: null
      prefer_local_intents: true
    timestamp: "2026-02-27T18:31:48.935032+00:00"
  - type: intent-end
    data:
      processed_locally: true
      intent_output:
        response:
          speech:
            plain:
              speech: Temperature set to 22 degrees
              extra_data: null
          card: {}
          language: en
          response_type: action_done
          data:
            targets: []
            success:
              - name: Klíma 1
                type: entity
                id: climate.midea_ac_144036023355376
            failed: []
        conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
        continue_conversation: false
    timestamp: "2026-02-27T18:31:49.420092+00:00"
  - type: run-end
    data: null
    timestamp: "2026-02-27T18:31:49.420203+00:00"
started: 2026-02-27T18:31:48.934Z
intent:
  engine: conversation.home_assistant
  language: en
  intent_input: "  Set the Klíma 1 to 22°."
  conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
  device_id: null
  satellite_id: null
  prefer_local_intents: true
  done: true
  processed_locally: true
  intent_output:
    response:
      speech:
        plain:
          speech: Temperature set to 22 degrees
          extra_data: null
      card: {}
      language: en
      response_type: action_done
      data:
        targets: []
        success:
          - name: Klíma 1
            type: entity
            id: climate.midea_ac_144036023355376
        failed: []
    conversation_id: 01KJG5Y2E6QTS5BY1R35MWT6E7
    continue_conversation: false
finished: 2026-02-27T18:31:49.420Z