Connected Thermostats Specification Version 1.0
On June 9, 2014 EPA announced a new approach under which residential HVAC controls would be recognized as ENERGY STAR based on their ability to save energy as demonstrated by aggregate data from homes. Minimum ease of use criteria have been dropped in favor of this approach. Now that products need field data to participate, EPA has renamed the forthcoming product category “Connected Thermostats”. Partners and other interested parties who would like to participate in this process are encouraged to send their contact information to ConnectedThermostats@energystar.gov to be added to the distribution list for specification development updates. This webpage will be updated periodically as new information becomes available.
Documents related to the previous ENERGY STAR Residential Climate Controls specification development have been archived and can be found on the Residential Climate Controls page.
Documents related to the ENERGY STAR Connected Thermostats Metrics Discussions please visit here.
ENERGY STAR Connected Thermostats Savings Method Seeds - June 18, 2019
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 210 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds - February 1, 2019
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 189 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds - November 7, 2018
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 211 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds and Resubmission - June 25, 2018
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 220 KB)
QuickstartMultiCore (PLAIN, 2 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds - January 23, 2018
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 183 KB)
ENERGY STAR Staged and Variable Capacity Data Call - August 25, 2017
ENERGY STAR CT Staged VC Data Request (PDF, 596 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds - August 11, 2017
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 188 KB)
Monday, July 3, 2017
CT Periodic Submission Delay Memo - July 3, 2017
ENERGY STAR Periodic Submission Delay Memo (PDF, 28 KB)
ENERGY STAR Connected Thermostats Savings Method Seeds - January 27, 2017
Connected Thermostats Final Draft Specification Comment Matrix and Comments - January 6, 2017
Bosch Final Draft Comments (PDF, 1.3 MB)
CA IOU Final Draft Comments (PDF, 155 KB)
CEE Final Draft Comments (PDF, 91 KB)
NEEP Final Draft Comments (PDF, 53 KB)
NEMA Final Draft Comments (PDF, 256 KB)
Nest Final Draft Comments (PDF, 43 KB)
ENERGY STAR Program Requirements for Connected Thermostats Version 1.0 - December 23, 2016
Version 1.0 Method to Demonstrate Field Savings of ENERGY STAR Connected Thermostats - December 19, 2016
Final Draft V1.0 Connected Thermostats Specification - December 2, 2016
BPA Draft 3 Comments (PDF, 117 KB)
CA IOU Draft 3 Comments (PDF, 276 KB)
CEE Draft 3 Comments (PDF, 640 KB)
NEEP Draft 3 Comments (PDF, 81 KB)
Nest Draft 3 Comments (PDF, 196 KB)
ENERGY STAR Connected Thermostats Final Draft Method to Demonstrate Field Savings - Nov 21, 2016
California IOU Comments (PDF, 235 KB)
NEEP Comments (PDF, 83 KB)
Nest Comments (PDF, 199 KB)
Connected Thermostats Draft 3 Version 1.0 Stakeholder Webinar - November 3, 2016
Datacall 3 Results and Observations - October 24, 2016
Draft 3 V1.0 Connected Thermostats Specification - October 18, 2016
Draft 2 Method to Demonstrate Field Savings - September 30, 2016
Datacall 3 - September 19, 2016
ENERGY STAR Connected Thermostats Datacall 3 (PDF, 108 KB)
ENERGY STAR CT Discussion Document, Field Savings methods implemented in Software - September 15, 2016
ENERGY STAR Connected Thermostats Meeting Field Savings Metric Webinar Slides - August 19, 2016
Connected Thermostat Stakeholder Instructions for Data Filtering - July 1, 2016
EIA Building America Climate Zone to Zipcode Database - May 5, 2016
EIA Building America Climate Zone to Zipcode Database (CSV, 768 KB)
March 2016 DataCall 2 Reporting Template
DataCall 2 Reporting Template (EXCEL, 220 KB)
Stakeholder Comments on the Draft 2 V1.0 Connected Thermostats Specification - December 23, 2015
CA IOU Comments (PDF, 366 KB)
EcoFactor Comments (PDF, 37 KB)
NEEP Comments (PDF, 84 KB)
ENERGY STAR Connected Thermostat Data Request -December 10, 2015
ENERGY STAR Connected Thermostat Data Request (PDF, 265 KB)
ENERGY STAR Connected Thermostats Draft 2 Version 1.0 Stakeholder Webinar and Discussion - December 10, 2015
Draft 2 V1.0 Connected Thermostats Specification - November 30, 2015
ENERGY STAR Connected Thermostats Data Request (PDF, 199 KB)
Stakeholder Comments on the Draft 1 V1.0 Connected Thermostats Grid Responsiveness Criteria - October 23, 2015
CA IOU Comments (PDF, 153 KB)
CEE Comments (PDF, 102 KB)
Comverge, Inc. Comments (PDF, 371 KB)
Stakeholder Comment Matrix- Grid Responsiveness (PDF, 200 KB)
ENERGY STAR Connected Thermostats Grid Responsiveness Webinar Slides - September 30, 2015
ENERGY STAR Connected Thermostats Grid Responsiveness Document & Draft 1 Comment Response Matrix - September 21, 2015
EPA ENERGY STAR Connected Thermostats - August 28, 2015
Stakeholder Comments on the Draft 1 V1.0 Connected Thermostats Specification - August 13, 2015
CA IOU Comments (PDF, 108 KB)
CEE Comments (PDF, 96 KB)
ecobee Comments (PDF, 740 KB)
Ecofactor Comment (PDF, 232 KB)
NEEP and VEIC Comments (PDF, 58 KB)
NEMA Comments (PDF, 190 KB)
ENERGY STAR Climate Controls Metric Framework - July 21, 2015
ENERGY STAR Version 1.0 Draft 1 Webinar Slides for Connected Thermostats - July 10, 2015
ENERGY STAR Data Call Findings and Reporting Template - July 1, 2015
Connected Thermostats Data Call Findings (PDF, 165 KB)
Connected Thermostats Data Call + Reporting Template (EXCEL, 159 KB)
ENERGY STAR Draft 1 Version 1.0 Specification for Connected Thermostats - June 17, 2015
ENERGY STAR Revised Climate Controls Call for Data - March 3, 2015
ENERGY STAR RCCS Data Request (PDF, 266 KB)
ENERGY STAR Climate Controls Metric Framework - January 12, 2015
ENERGY STAR Climate Controls Metric Framework and Comparison - November 5, 2014
Stakeholder Comments on the New Approach Memo - July 14, 2014
Energy Trust of Oregon Comments (PDF, 310 KB)
Nest Labs Comments (PDF, 251 KB)
Nest Supplementary Comments (PDF, 1.6 MB)
Schneider Electric Comments (PDF, 1018 KB)
Climate Controls Update Memo Webinar - June 23, 2014
EPA Climate Controls Update Memo Webinar Slides (PDF, 463 KB)
ENERGY STAR Climate Controls Update Memo - June 9, 2014
ENERGY STAR Climate Controls Memo (PDF, 133 KB)