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  • ENERGY STAR Certified
    Smart Thermostats

    Smart thermostats that earn the ENERGY STAR label have been independently certified to deliver energy savings.

For the average American household, almost half of the annual energy bill goes to heating and cooling – that’s more than $900 a year. Being smart about how you control your temperature settings with an ENERGY STAR certified smart thermostat will help you save money and stay comfortable in your home.

Each product uses slightly different features to help homeowners save energy, so do your research, and choose the ENERGY STAR certified smart thermostat that's right for you.

Common ENERGY STAR certified smart thermostat features may include:

  • Remote Control:
    • Using your smartphone, you can adjust the temperature in your home from anywhere with an internet connection.
  • Geofencing:
    • This feature allows your thermostat to detect when you’ve left for the day to ‘set back’ your HVAC system and save money on your heating or A/C bill. If you’re on the way home, the thermostat can automatically adjust the temperature to ensure you arrive to a comfortable home.
  • Learning temperature preferences:
    • Certain ENERGY STAR certified smart thermostats can learn your preferences automatically and establish a schedule that adjusts to energy-saving temperatures when you are asleep or away.
  • Over-the-Air Updates:
    • Your thermostat may update its software periodically to ensure it uses the latest algorithms and energy-saving features available.

Buying tips:

  • Make sure the smart thermostat you purchase is compatible with your heating and cooling system. For the very highest efficiency heating and cooling equipment, you may want a controller from the same company. (E.g. Air conditioner rated at 20 SEER or higher).
  • If your smart thermostat uses WIFI, make sure it’s reasonably close to the router to prevent periodic disconnections. If your thermostat is too far from your router, consider a WIFI range extender, which can improve overall connectivity.

ENERGY STAR certified smart thermostats are also designed to be compatible with the programs that some local utilities offer, providing home owners in their service territory with incentives to help them manage reliability.


Pledge to choose an ENERGY STAR certified smart thermostat. If everyone used an ENERGY STAR certified smart thermostat, savings would grow to 56 trillion BTUs of energy and $740 million dollars per year, offsetting 13 billion pounds of annual greenhouse gas emissions.
By taking the Pledge, you acknowledge and agree that: 1) Your personal information submitted as part of the ENERGY STAR Pledge will be shared with the EPA and organizations you have agreed to associate with your account; 2) that EPA's use of your personal information shall be governed by EPA's Privacy Policy, and 3) you may receive emails from ENERGY STAR or the associated organization.

EcoFactor - simple S100

Specificationsdownload pdf open pdf

ENERGY STAR PartnerField details: EcoFactor, Inc.
Thermostat Brand OwnerField details: EcoFactor, Inc.
Thermostat Brand NameField details: EcoFactor
Thermostat Model NameField details: simple S100 B
Thermostat Model NumberField details: simple S100 B
Additional Thermostat Model NumbersField details: simple S100 W, simple S100-01, simple S100-02
Standby Power (W)Field details: 0.55
Thermostat Heating and Cooling Control FeaturesField details: External Temperature Detection
Thermostat Communication MethodField details: Wi-Fi
Demand Response SummaryField details: EcoFactor thermostats provide market-leading capabilities in deployments nationwide. Our thermostat has participated in demand management via load dispatch, as well as time-of-use pricing response. The S100 thermostat offers a robust set of RESTful APIs to partners, allowing for straight-forward integration. Available for partner use are both a “Thermostat API Specification” and “DR API Specification,” offering server-to-server communications specific to general thermostat control, and demand response control, respectively.EcoFactor supports locational DR, allowing users to create “groups” based on segmenting features. Zip code is the primary characteristic used for segmentation, but custom groups are also possible. As an OpenADR member, EcoFactor is committed to openness and interoperability.EcoFactor reports run-time and thermostat performance at minute intervals, allowing for detailed measurement and verification of performance, including measurement of overrides. EcoFactor also records the type of HVAC equipment controlled by thermostat and continuously measures and records indoor and set point temperatures. Thermostat customers receive detailed reporting on thermostat run- time and savings versus baseline.EcoFactor is a leader in creating smart optimization, allowing for users to receive both energy efficiency– resulting in 10-15 percent annual savings on HVAC use – as well as optimized demand management, which prioritizes comfort through approaches such as pre-cooling and in-event cycling. Events can be configured by DR program managers including timing, duration, degree of cycling/offset, load shaping, and grouping. The S100 is largely compliant with 2016 CEC Title 24, Part 6 Joint Appendix 5, with the exception that the S100 does not have a physical expansion port.
Date Available on MarketField details: 01/01/2016
Date CertifiedField details: 04/26/2017
MarketsField details: United States, Canada
ENERGY STAR CertifiedField details: Yes
ENERGY STAR Most Efficient: No

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