Enlarge / The first Ecobee Thermostat, may it rest in peace. (credit: Ecobee) Ecobee is killing off some of its oldest thermostats. The "Ecobee Smart Thermostat" (Model # : EB-STAT-02) and the Ecobee Energy Management System (EMS) business thermostat (Model #: EB-EMS-02) are losing web access on July 31, 2024. Every Ecobee device has nearly the same name, but these are older devices.