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Emerson Sensi Classic Smart Thermostat

I-EMRSENSIP-01-WHIT-XXXX-V2 3.4 star rated
After a $64.5 Instant Rebate

Storefront Attributes

  • Energy Star: Yes
  • Water Sense: No
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  • Media Feature Markdown: **System Compatibility** **What is a C-Wire?** A C-wire (common wire) is required for most HVACs. A C-wire is a low voltage power wire that many modern thermostats require for their features to work. Many older homes don’t have a C-wire because mercury and battery-powered thermostats didn’t require one. Therefore, it is important that you make sure your HVAC system is compatible with Emerson's thermostat. For Sensi Wi-Fi Thermostat, a C-wire is required for heat only systems, cool only systems and heat pump without auxiliary heat. Two AA batteries (included) provide backup power that can last for months. However, if you have a C-wire, it is recommended that you connect it. [**Check compatibility with your HVAC system**]({openNewTab}) before purchasing. You can also hire an HVAC contractor to help you install the C-wire and the thermostat. **This thermostat is not compatible with electric baseboard heating systems.**
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Thermostats-specific Attributes

  • C-wire required: No
  • Features: Alerts and reminders Connects to wifi Location-based triggers Provides energy usage report Flexible Scheduling Vacation Mode


  • Brand: Emerson
Model: ST55U
ENERGY STAR® HAS RECOGNIZED SENSI THERMOSTATS AS PARTNER OF THE YEAR FOR 2020¹. This award is the highest level of recognition by the U.S. Environmental Protection Agency for achievements in energy efficiency. With your Emerson Sensi Classic Smart Thermostat, you can save about 23% of HVAC energy consumption with features like flexible scheduling, geofencing and remote access using your smartphone, tablet or PC. **In the box** * Sensi (Wi-Fi) Smart Thermostat * Thermostat base * Mounting hardware * Quick-start guide * Wire labels * 2- AA batteries ¹ [Emerson Sensi Honored as Energy Star Partner of the Year, 2020]({openNewTab})