Connected Thermostats Specification V1.0
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Documents related to the previous ENERGY STAR Residential Climate Controls specification development have been archived and can be found on the Residential Climate Controls page.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.
June 18, 2019 - ENERGY STAR Connected Thermostats Savings Method Seeds
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 215 KB)
February 1, 2019 - ENERGY STAR Connected Thermostats Savings Method Seeds
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 193 KB)
November 7, 2018 - ENERGY STAR Connected Thermostats Savings Method Seeds
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 216 KB)
June 25, 2018 - ENERGY STAR Connected Thermostats Savings Method Seeds and Resubmission
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 225 KB)
QuickstartMultiCore (PLAIN, 2 KB)
January 23, 2018 - ENERGY STAR Connected Thermostats Savings Method Seeds
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 188 KB)
August 25, 2017 - ENERGY STAR Staged and Variable Capacity Data Call
ENERGY STAR CT Staged VC Data Request.pdf (PDF, 610 KB)
August 11, 2017 - ENERGY STAR Connected Thermostats Savings Method Seeds
ENERGY STAR Connected Thermostats Savings Method Seeds (PDF, 193 KB)
Monday, July 3, 2017
July 3, 2017 - CT Periodic Submission Delay Memo
ENERGY STAR Periodic Submission Delay Memo.pdf (PDF, 29 KB)
January 27, 2017 - ENERGY STAR Connected Thermostats Savings Method Seeds
January 6, 2017 - Connected Thermostats Final Draft Specification Comment Matrix and Comments
Stakeholder Comment Matrix - ENERGY STAR Connected Thermostats Version 1.0 Final Draft Specification (PDF, 22 KB)
Bosch Final Draft Comments (PDF, 1.4 MB)
CA IOU Final Draft Comments (PDF, 158 KB)
CEE Final Draft Comments (PDF, 93 KB)
NEEP Final Draft Comments (PDF, 54 KB)
NEMA Final Draft Comments (PDF, 262 KB)
Nest Final Draft Comments (PDF, 44 KB)
December 23, 2016 - ENERGY STAR Program Requirements for Connected Thermostats Version 1.0
December 19, 2016 - Version 1.0 Method to Demonstrate Field Savings of ENERGY STAR Connected Thermostats
Cover memo for Version 1.0 Method to Demonstrate Field Savings of ENERGY STAR Connected Thermostats (PDF, 35 KB)
December 2, 2016 - Final Draft V1.0 Connected Thermostats Specification
Stakeholder Comment Matrix - ENERGY STAR Connected Thermostats Version 1.0 Draft 3 Specification (PDF, 52 KB)
BPA Draft 3 Comments (PDF, 120 KB)
CA IOU Draft 3 Comments (PDF, 283 KB)
CEE Draft 3 Comments (PDF, 655 KB)
NEEP Draft 3 Comments (PDF, 83 KB)
Nest Draft 3 Comments (PDF, 200 KB)
Nov 21, 2016 - ENERGY STAR Connected Thermostats Final Draft Method to Demonstrate Field Savings
Cover Memo for Final Draft Method to Demonstrate Field Savings of ENERGY STAR Connected Thermostats (PDF, 29 KB)
California IOU Comments (PDF, 241 KB)
NEEP Comments (PDF, 85 KB)
Nest Comments (PDF, 204 KB)
November 3, 2016- Connected Thermostats Draft 3 Version 1.0 Stakeholder Webinar
October 24, 2016 - Datacall 3 Results and Observations
October 18, 2016 - Draft 3 V1.0 Connected Thermostats Specification
September 30, 2016 - Draft 2 Method to Demonstrate Field Savings
Cover Memo for Draft 2 Method to Demonstrate Field Savings of ENERGY STAR Connected Thermostats (PDF, 115 KB)
Stakeholder Comment Matrix - ENERGY STAR Connected Thermostat Savings Method Draft 1 Version 1.0 (PDF, 14 KB)
September 15, 2016 - ENERGY STAR CT Discussion Document, Field Savings methods implemented in Software
August 19, 2016 - ENERGY STAR Connected Thermostats Meeting Field Savings Metric Webinar Slides
July 1, 2016 - Connected Thermostat Stakeholder Instructions for Data Filtering
May 5, 2016 - EIA Building America Climate Zone to Zipcode Database
EIA Building America Climate Zone to Zipcode Database (CSV, 768 KB)
December 23, 2015 - Stakeholder Comments on the Draft 2 V1.0 Connected Thermostats Specification
CA IOU Comments (PDF, 375 KB)
EcoFactor Comments (PDF, 38 KB)
NEEP Comments (PDF, 86 KB)
December 10, 2015 - ENERGY STAR Connected Thermostat Data Request
ENERGY STAR Connected Thermostat Data Request (PDF, 272 KB)
REVISED Building America Climate Zone/Zipcode Database_2015.12.18 - SAVE AND CHANGE TO .csv (OFFICEDOCUMENT, 568 KB)
December 10, 2015 - ENERGY STAR Connected Thermostats Draft 2 Version 1.0 Stakeholder Webinar and Discussion
November 30, 2015 - Draft 2 V1.0 Connected Thermostats Specification
ENERGY STAR Connected Thermostats Data Request (PDF, 203 KB)
Stakeholder Comment Response Matrix - ENERGY STAR Connected Thermostats Version 1.0 Draft 1 (PDF, 21 KB)
October 23, 2015- Stakeholder Comments on the Draft 1 V1.0 Connected Thermostats Grid Responsiveness Criteria
CA IOU Comments (PDF, 157 KB)
CEE Comments (PDF, 105 KB)
Comverge, Inc. Comments (PDF, 0 B)
Stakeholder Comment Matrix- Grid Responsiveness (PDF, 205 KB)
September 30, 2015 - ENERGY STAR Connected Thermostats Grid Responsiveness Webinar Slides
September 21, 2015 - ENERGY STAR Connected Thermostats Grid Responsiveness Document & Draft 1 Comment Response Matrix
August 28, 2015- EPA ENERGY STAR Connected Thermostats
August 13, 2015 - Stakeholder Comments on the Draft 1 V1.0 Connected Thermostats Specification
CA IOU Comments (PDF, 110 KB)
CEE Comments (PDF, 98 KB)
ecobee Comments (PDF, 757 KB)
Ecofactor Comment (PDF, 237 KB)
NEEP and VEIC Comments (PDF, 59 KB)
NEMA Comments (PDF, 195 KB)
Stakeholder Comment Response Matrix - ENERGY STAR Connected Thermostats Version 1.0 Draft 1 (PDF, 21 KB)
July 21, 2015 - ENERGY STAR Climate Controls Metric Framework
July 10, 2015 - ENERGY STAR Version 1.0 Draft 1 Webinar Slides for Connected Thermostats
July 1, 2015 - ENERGY STAR Data Call Findings and Reporting Template
Connected Thermostats Data Call Findings (PDF, 169 KB)
Connected Thermostats Data Call + Reporting Template (OFFICEDOCUMENT, 163 KB)
June 17, 2015 - ENERGY STAR Draft 1 Version 1.0 Specification for Connected Thermostats
March 3, 2015 - ENERGY STAR Revised Climate Controls Call for Data
ENERGY STAR RCCS Data Request (PDF, 273 KB)
January 12, 2015 - ENERGY STAR Climate Controls Metric Framework
November 5, 2014 - ENERGY STAR Climate Controls Metric Framework and Comparison
July 14, 2014 - Stakeholder Comments on the New Approach Memo
Energy Trust of Oregon Comments (PDF, 317 KB)
Nest Labs Comments (PDF, 257 KB)
Nest Supplementary Comments (PDF, 1.6 MB)
Schneider Electric Comments (PDF, 1.0 MB)
June 23, 2014 - Climate Controls Update Memo Webinar
EPA Climate Controls Update Memo Webinar Slides (PDF, 474 KB)
June 9, 2014 - ENERGY STAR Climate Controls Update Memo
ENERGY STAR Climate Controls Memo (PDF, 136 KB)