Master/slave zwave thermostat sync

I have a set of two zwave thermostats that heats the entire ground floor. I want them to be synchronized. Does anyone have a smart way of synchronizing them? Setting temperature, turning on/off, set eco mode and so on? Would prefer not to make automations for each attribute.

Have you tried using groups? You can certainly issue commands to groups of some types of entities - e.g. turning on/off all the entities in a group of switches. Maybe the same would work with climate controls?