Documentation guide
Thermostats and energy
Choose for your HVAC system and wiring, then tune comfort before making savings claims.
ExploreThermostat
Find the right tech for your home.
Legacy model
Nest Thermostat E
These pages refer to Nest Thermostat E and third-generation Nest Learning Thermostat respectively. Google’s October 2025 app-support cutoff applies to first- and second-generation Learning Thermostats, not auto
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Legacy model
ecobee4 Thermostat
ecobee retains an ecobee4 installation guide with an HVAC compatibility check. Remote room sensors provide additional temperature and occupancy information, rather than knowing with certainty whether everybody
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Legacy model
Nest Thermostat 3rd Gen Premium
These pages refer to Nest Thermostat E and third-generation Nest Learning Thermostat respectively. Google’s October 2025 app-support cutoff applies to first- and second-generation Learning Thermostats, not auto
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