Can’t Add or Remove Thermostats From a Zone

Last updated: September 2, 2026

This is expected behavior, not a broken setting. You cannot add or remove individual thermostats from an existing zone.

To change membership

  1. Note the zone name, schedule, and the thermostats you want.

  2. Delete the existing zone.

  3. Create a new zone with the updated list.

  4. Confirm the new zone has the setpoint and schedule you want. A new zone starts from the devices you selected — re-apply the schedule if it did not carry over.

Note: Each thermostat runs independently between deleting the old zone and creating the new one. Temperatures may diverge during that gap.

Renaming a zone does not change membership. Only Mysa for Baseboards V1 and V2 appear in the picker. See Mysa App > Zones > Changing Thermostats in a Zone for the how-to.