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Smart Thermostats Specification Version 2.0

Materials related to this revision process are provided below. Stakeholders who received past communications related to development of Version 1.0 will continue to receive updates on this development effort. To be added to the contact list, stakeholders are encouraged to contact connectedthermostats@energystar.gov with their contact information.

Smart Thermostats Version 2.0 Draft 2 Specification Webinar - December 4, 2024

ENERGY STAR Smart Thermostats Version 2.0 Draft 2 Method to Demonstrate Field Savings (PDF, 1.67 MB)

ENERGY STAR Version 2.0 Smart Thermostats Draft 2 Specification - November 21, 2024

ENERGY STAR Version 2.0 Smart Thermostat Draft 2 Specification Memo (PDF, 184.77 KB) ENERGY STAR Version 2.0 Smart Thermostats Draft 2 Method to Demonstrate Field Savings (PDF, 429.18 KB)

Smart Thermostats Version 2.0 Draft 1 Specification Stakeholder Comments - September 14, 2022

CA IOUs Joint Comments (PDF 311 KB)
Google Comments (PDF 359 KB)
Hydro Quebec Comments (PDF 196 KB)
Mysa Comments (PDF 587 KB)
Mysa Additional Comments (PDF 582 KB)
Ecobee Comments (PDF, 117.61 KB)

Smart Thermostats Version 2.0 Draft 1 Specification Webinar - July 21, 2022

ENERGYSTAR_SmartThermostats_V2.0 Draft 1 Specification Webinar Slides (PDF, 1.4 MB)

ENERGY STAR Version 2.0 Smart Thermostats Draft 1 Specification - July 11, 2022

ENERGY STAR Version 2.0 Smart Thermostats Draft 1 Specification Memo (PDF, 263 KB)
ENERGY STAR Version 2.0 Smart Thermostats Draft 1 Specification (PDF, 507 KB)
ENERGY STAR Version 2.0 Smart Thermostats Draft 1 Method to Demonstrate Field Savings (PDF, 512 KB)

Discussion Guide for Version 2.0 Smart Thermostats Specification - June 29, 2021

ENERGY STAR Version 2.0 Smart Thermostat Discussion Guide Cover Memo (PDF, 279.37 KB) Version 2.0 ENERGY STAR Smart Thermostats Discussion Guide (PDF, 212.07 KB)

Smart Thermostats Version 2.0 Discussion Guide Webinar- July 26, 2021

ENERGYSTAR_SmartThermostats_V2.0 Discussion Guide Webinar Slides (PDF, 1.15 MB)

Discussion Guide Version 2.0 Stakeholder Comments - Wednesday, August 18, 2021

CA IOU Comments (PDF, 1.0 MB)
Stelpro Comments (PDF, 468 KB)
Google Nest Comments (PDF, 88 KB)
Stello Comments (PDF, 122 KB)
Hydro Quebec Comments (PDF, 155 KB)
Carrier Comments (PDF, 167 KB)
Resideo Comments (PDF, 54 KB)
Mysa Comments (PDF, 122 KB)