If you had multiple Ecobee thermostats in your home, you could manage them collectively through the Ecobee app or other compatible smart home platforms. This allows you to set up zones, adjust temperatures, and monitor energy usage for different areas of your home.
Grouping Your Ecobee Thermostats
Ecobee provides the functionality to group multiple thermostats in the web portal. Ensure they are configured to share the same ‘System Mode.’ Even if you have various Ecobee models, compatibility is seamless across all of them.
By grouping your thermostats, they collaborate effectively, mitigating any conflicting signals to your HVAC system. This proves especially beneficial in maintaining a uniform temperature across distinct zones in your home, contributing to enhanced energy efficiency.
What is Share system mode in Ecobee thermostat
“Share System Mode” refers to a feature that allows users to synchronize the system mode settings across multiple Ecobee thermostats when they are grouped together. The system mode refers to the overall operational state of the HVAC (Heating, Ventilation, and Air Conditioning) system, such as heating, cooling, or off.
You have an option to share various behaviours..
Its not just grouping them together.
It’s essential for the thermostats to synchronize specific behaviors.In the group settings section.
For example it’s likely that you prefer them to share the System Mode, indicating they will all engage in heating or cooling simultaneously.
Additionally, you may want them to adopt the same temperature setting as the driving factor. This can be achieved through either the Preferences or Schedule settings—or possibly both.
Disclaimer: This service may not be working from last 8 months….(since March 2023)
A Reddit thread in Ecobee subreddit has popped up that brings a major problem in this feature from ecobee end and the problem still seems to persist even at present since 8 months.
The thread says The Grouping feature available via the Web Portal has been temporarily disabled in order to help restore normal other operations.
It says it will eventually be restored, but they do not currently have an ETA about it. When it happens they update you on this Reddit post.
People who contacted customer support got this answer:
We will not notify when [or whether] this issue will be fixed.
Here is the link to the thread: Please check this thread for latest update or contact customer support to know if its been fixed.

About the Author
ManBearPig is a part-man, part-bear, part-pig creature and a full-time expert on global warming—mostly because he has personally experienced the consequences of being extremely, extremely, super cereal.
When he isn’t roaming the wilderness, terrorizing unsuspecting humans, or demanding that people take climate change seriously, ManBearPig studies rising temperatures, melting ice, extreme weather, carbon emissions, and other inconvenient signs that the planet may not be particularly happy with us.
His research philosophy is simple:
“I’m super cereal.”
ManBearPig believes climate change is too important to discuss without facts—and too ridiculous to discuss without a little humor. Through this website, he explores global warming, climate science, environmental changes, energy, and the strange ways humans respond when their own planet starts sending them warning signals.
He has no university degree, no laboratory, and absolutely no intention of becoming a respectable academic.
But he does have hooves, claws, a snout, and an unusually strong opinion about melting ice.
