HomeKit Automations Not Working
Last updated: September 2, 2026
Applies to: Mysa for Baseboards and Mysa for In-Floor Heating.
Does not apply to the Mysa Smart Thermostat (24V central HVAC), which uses a different HomeKit integration path.
If your thermostat responds to manual temperature changes in the Apple Home app but HomeKit automations do not run, temperature rounding in HomeKit automations may be the cause.
Quick solution
Change automation target temperatures to half-degree values (for example, 22.5°C instead of 23°C). Whole-number setpoints can prevent automations from firing on some Mysa models.
If the quick solution does not work
Try these steps in order:
1. Reset your HomeKit connection
Remove the affected Mysa thermostat from the Apple Home app.
On the thermostat, press and hold the up and down arrows until the on-screen countdown finishes.
Add the thermostat back in the Apple Home app and recreate your automations.
2. Check for schedule conflicts
Temporarily disable schedules in the Mysa app.
Make sure the device is not in Hold during the automation window.
3. Reset your Home hub
Restart the Apple TV, HomePod, or iPad acting as your home hub.
In the Home app, confirm it is the primary home hub.
4. Test a simple automation
Create one automation affecting a single Mysa thermostat.
Use a half-degree target temperature (for example, 21.5°C).
Confirm whether the issue affects one room or every Mysa thermostat.
Related guide
Still stuck?
Check that the thermostat is online in the Mysa app, then contact support@getmysa.com.