Mysa now says Matter is available on its Smart Thermostat for Central HVAC. In a support guide last updated July 6, 2026, the company lists firmware 4.5.37 or later and Mysa app 4.11 or later as the minimum versions. The thermostat connects over 2.4 GHz Wi-Fi, so this is not a Thread upgrade and it does not turn Mysa's other thermostat families into Matter devices.
The setup starts in the Mysa app, not in Apple Home, Google Home, or Alexa. The thermostat must already be online in Mysa. Open the app's Home Assistants menu, select the Central HVAC model, and copy its Matter code or display the QR code. Mysa says the thermostat, phone, and Matter controller should be on the same home network rather than a guest network.
Mysa's current support table separates the controls that travel through Matter from the settings that remain in its own app:
| Through Matter | Still Mysa-specific or limited |
|---|---|
| Current temperature and setpoint | Extended temperature range |
| Heat, cool, auto, and off modes | Auxiliary heat and fan-only modes |
| Humidity, where the platform displays it | Auto-mode deadband adjustment |
| Voice control and automations | HVAC configuration changes |
That is enough for ordinary temperature routines, but it is not a full copy of the Mysa interface. Platform presentation can vary, and Mysa warns that a platform may display a mode that the connected HVAC system cannot actually run. The thermostat rejects an invalid command rather than changing to an unsupported mode.
Check the model and setup state
The update applies only to the low-voltage Mysa Smart Thermostat for Central HVAC. Mysa explicitly excludes its Baseboard, AC, and In-Floor thermostats from this Matter path. Mysa ships direct orders only to the United States and Canada. A new buyer should also check the wiring before treating Matter as the deciding feature: the Central HVAC model is for compatible 24 V systems, requires continuous power from a C-wire or supported adapter, and connects to Wi-Fi rather than Thread.
There is one documentation wrinkle. Mysa's newer Matter guide, current store page, and Connectivity Standards Alliance certificate all identify the Central HVAC thermostat as Matter-capable, but an older general product overview still says support is expected through a future firmware update. Use the July 6 Matter guide for the current pairing path and do not extend its claim to a similarly named Mysa model.
Re-pairing also has a cost. Mysa says re-pairing the thermostat in its app removes every Matter platform connection, while changing the HVAC configuration code requires another removal and setup cycle. Existing automations then need to be rebuilt. Matterhome has not tested this rollout. Update the app and thermostat first, confirm that the Matter code appears for the exact Central HVAC model, and test a simple setpoint change before moving heating or cooling routines across.
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