HomeKit Bridge: Control Center tap on a Heater Cooler toggles Swing Mode instead of power (HeaterCooler service lacks Name characteristic) #184153

The problem

When a climate entity is exposed by the HomeKit Bridge as a Heater Cooler, a tap on its iOS Control Center control toggles Swing Mode instead of power (Active). The Home app tile works correctly; only Control Center is affected. The AC beeps (it receives set_swing_mode) but stays on.

Cause: the HeaterCooler service created in type_heater_coolers.py has no Name characteristic. When the service has Name, Control Center writes Active as expected. Homebridge adds Name to every service, which is why the same ACs worked from Control Center under Homebridge.

How this was isolated: I ran a HAP-python bridge with dummy Heater Cooler accessories that differed one property at a time, added each to Control Center on an iPhone, tapped it once, and logged the characteristic write:

Characteristic order and the primary-service flag make no difference; the Name characteristic alone decides it. Reproduced on the real bridge with 7 AUX ACs (aux_cloud): every Control Center tap is logged as "HomeKit send command set_swing_mode".

Suggested fix in homeassistant/components/homekit/type_heater_coolers.py: add CHAR_NAME to the HeaterCooler chars list and set it to the display name (as is already done for the linked humidity sensor):

chars = [
    CHAR_ACTIVE,
    CHAR_CURRENT_HEATER_COOLER_STATE,
    CHAR_TARGET_HEATER_COOLER_STATE,
    CHAR_CURRENT_TEMPERATURE,
    CHAR_NAME,
]
...
serv = self.add_preload_service(SERV_HEATER_COOLER, chars)
serv.configure_char(CHAR_NAME, value=self.display_name)

What version of Home Assistant Core has the issue?

core-2026.9.4

What was the last working version of Home Assistant Core?

No response (never worked from Control Center with the HomeKit Bridge; worked under Homebridge)

What type of installation are you running?

Home Assistant OS

Integration causing the issue

HomeKit Bridge

Link to integration documentation on our website

https://www.home-assistant.io/integrations/homekit/

Diagnostics information

Relevant part of the accessory from the HomeKit Bridge diagnostics: one HeaterCooler service (primary) with Active, CurrentHeaterCoolerState, TargetHeaterCoolerState, CurrentTemperature, CoolingThresholdTemperature, HeatingThresholdTemperature, RotationSpeed, SwingMode; no Name characteristic.

Example YAML snippet

No response

Anything in the logs that might be useful for us?

HomeKit send command set_swing_mode for Living Room AC   <- Control Center tap
HomeKit send command set_hvac_mode for Living Room AC    <- Home app tile tap

Additional information

Tested on iOS Control Center with the climate exposed as heater_cooler. The test bridge used HAP-python, the same library the HomeKit Bridge uses.