There is one in the EcoBee Premium and we use it to automatically drive our HRV (heat recovery ventilation.). It is better to have it in the HVAC system than i

There is one in the EcoBee Premium and we use it to automatically drive our HRV (heat recovery ventilation.). It is better to have it in the HVAC system than in your phone anyhow: https://ben3d.ca/blog/upgrading-hvac-control https://ben3d.ca/blog/upgrading-hvac-control