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Emerson Sensi Smart Thermostat

Model # ST55C|Store SKU # 1000830270

Overview

Model # ST55C Store SKU # 1000830270

From across the room or across the country, your Sensi Smart Thermostat makes it easy to remotely control and schedule your home comfort - Anytime. Anywhere. Put your comfort on your terms with geofencing or 7-day scheduling option with the ENERGY STAR® certified Sensi thermostat. Both energy saving features save you about 23% on your HVAC energy usage so you can save money without compromising your comfort. *Energy savings calculated by comparing operation time for a nationwide sample of Sensi users with temperature adjustments averaging 2°C versus users with no adjustments. Savings vary based on equipment type/condition, insulation, climate & temperature adjustment size/frequency. **Based on survey results of 2120 respondents that purchased and installed a Sensi thermostat in 2018, approximately 70% reported installing in 30 minutes or less. Adding a common wire may impact installation time. *** Sensi thermostat does not require a common wire (c-wire) for most installations, so it is compatible with the HVAC equipment in many homes in U.S. & Canada. Does not work with electric baseboard heat and some other systems. A c-wire is required for heat-only, cool-only and heat pump (without aux) systems, and for use with Apple HomeKit. Check to make sure it will work for you at sensi.emerson.com/compatibility. System requirements for mobile app: iOS - 10.0 or above Android - 4.2 or above (5.0 or greater to use the Geofencing feature). Our highly certified Sensi support team is available seven days a week: sensi.emerson.com/support, support@sensicomfort.com, 1-888-605-7131

  1. First smart thermostat receiving the 2020 ENERGY STAR Partner of the Year award and named the 'Best Value' smart thermostat of 2020 by USA Today's Reviewed.com
  1. GET REBATES: Find utility rebates in your area through the rebate finder at emersoncanada.ca/rebates
  1. SMART HOME COMPATIBLE: Works with Amazon Alexa, Google Assistant, Apple HomeKit (c-wire required), SmartThings and Wink smart home platforms
  1. SAVE ABOUT 23% ON HVAC ENERGY *: The ENERGY STAR certified Sensi thermostat helps you save on your HVAC energy costs, with features like geofencing, 7-day flexible scheduling, remote access and energy usage reports
  1. MOST INSTALL IN 30 MINUTES OR LESS**: With step-by-step instructions and video tutorials right in the mobile app, most people install Sensi in 30 minutes or less
  1. EXTENSIVE COMPATIBILITY***: Works with the HVAC equipment found in most homes. A c-wire is required for heat-only, cool-only and heat pump systems without aux

Specifications

Dimensions

Assembled Depth (in inches)
1
Assembled Height (in inches)
3.75
Assembled Weight (in lbs)
0.8
Assembled Width (in inches)
5.875
Packaged Depth (in inches)
8.5
Packaged Height (in inches)
9
Packaged Weight (In lbs)
1.53
Packaged Width (in inches)
3

Details

Battery Operated
Yes
Built-in Wifi
Yes
Certified
Yes
Colour Family
White
Country of Origin
MX-Mexico
Eco Options
Energy Efficient
ENERGY STAR®
Yes
Power Source
Battery
Program Type
7-Day
Programmable
Yes
Smart Technology
Smart
Works with (Smart Home)
Apple Homekit, Google Assistant, Amazon Alexa

Warranty / Certifications

3-year warranty
Sensi Smart ThermostatEmerson Sensi Smart ThermostatFrom across the room or across the country, your Sensi Smart Thermostat makes it easy to remotely control and schedule your home comfort - Anytime. Anywhere. Put your comfort on your terms with geofencing or 7-day scheduling option with the ENERGY STAR® certified Sensi thermostat. Both energy saving features save you about 23% on your HVAC energy usage so you can save money without compromising your comfort. *Energy savings calculated by comparing operation time for a nationwide sample of Sensi users with temperature adjustments averaging 2°C versus users with no adjustments. Savings vary based on equipment type/condition, insulation, climate & temperature adjustment size/frequency. **Based on survey results of 2120 respondents that purchased and installed a Sensi thermostat in 2018, approximately 70% reported installing in 30 minutes or less. Adding a common wire may impact installation time. *** Sensi thermostat does not require a common wire (c-wire) for most installations, so it is compatible with the HVAC equipment in many homes in U.S. & Canada. Does not work with electric baseboard heat and some other systems. A c-wire is required for heat-only, cool-only and heat pump (without aux) systems, and for use with Apple HomeKit. Check to make sure it will work for you at sensi.emerson.com/compatibility. System requirements for mobile app: iOS - 10.0 or above Android - 4.2 or above (5.0 or greater to use the Geofencing feature). Our highly certified Sensi support team is available seven days a week: sensi.emerson.com/support, support@sensicomfort.com, 1-888-605-7131
Emerson
1000830270
CAD129
The Home Depot Canada
Sensi Smart Thermostat is rated 4.5 out of 5 by 1160.
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Rated 5 out of 5 by from outstanding support, reliable performance I had purchased a competitive product and the mounting did not fit the j-box and getting the adapter plate was going to take weeks. The Sensi covered the j-box, the app is easy and intuitive, and the phone support was responsive and accurate to walk me through the connections.
Date published: 2021-09-04
Rated 5 out of 5 by from Easy install great options and value As the the review title states. I really like how easy it was to install, many customizable features, how it works with our Google home network, and etc.
Date published: 2021-08-30
Rated 5 out of 5 by from Easy to use Easy to install. Takes 5 min. My only suggestion is to upgrade the unit from looking like an 8 bit game boy to a more colorful screen. This in no way changes it’s usefulness or awesomeness
Date published: 2021-08-30
Rated 5 out of 5 by from I did a lot of looking and reading.... this particular thermostat had very high number of 5 stars, plus it was under $100. Deemed it well worth trying as i can try and bump up to the a more expensive ones. I have had this for 3 years, and it has never failed me. It was an easy self-install and setup. Love it.
Date published: 2021-08-26
Rated 5 out of 5 by from Easy Installation, Was Replacing My EcoBee I used EcoBee for many years in our previous home with no issues. After moving we started having issues with the AC of our unit. At times the thermostat called for cooling but timed out and the AC did not start. Talked to my HVAC technician and he recommended to change to Honeywell or Emerson. I looked at both and went with the Emerson for the specs and price. Installation was super simple, just followed the steps in the app. Two things that could be improved: a movement sensor for the backlight and the app analysis functions. But, it does what it's supposed to do, and the issues with the AC have gone away.
Date published: 2021-08-24
Rated 5 out of 5 by from Great unit and the online help videos got me up... Great unit and the online help videos got me up and running easily.
Date published: 2021-08-15
Rated 5 out of 5 by from Rating provided by a verified purchaser... Rating provided by a verified purchaser
Date published: 2021-08-15
Rated 5 out of 5 by from Best home upgrade Very easy to install and set-up. I really like how you can control how you want this controller to manage the heating and cooling cycles rates slow, medium or fast. I have ours set to fast allowing shorter on times and off times this is helped the air condenser to run cooler. The house no longer has cold or warm spots. You cane control the humidity level too and of course the WiFi 2.4g works perfectly.
Date published: 2021-08-02
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How is this powered? Our current thermostat uses batteries, there is no household power available.

How is this powered? Our current thermostat uses batteries, there is no household power available.
Asked by: Steven
Sensi lists the power option in the document at https://sensi.emerson.com/en-us/support/adding-a-24-vac-external-transformer
Answered by: Jeepmandan
Date published: 2021-09-21

Will it switch from A/C to heat as needed automatically?

Will it switch from A/C to heat as needed automatically?
Asked by: Steve
Yes, Sensi can switch from heat to cool automatically when it is placed in Auto mode.
Answered by: Emerson Thermostats
Date published: 2021-08-27

Do I need two of these if I have two zones? Or is there one of these that controls both. Currently I have two dumb thermostats.

Do I need two of these if I have two zones? Or is there one of these that controls both. Currently I have two dumb thermostats.
Asked by: Grace
Sensi functions as a traditional wall thermostat and the system board would control how the zones function. For further information and compatibility please reach out to Sensi Technical Support at support@sensicomfort.com.
Answered by: Emerson Thermostats
Date published: 2021-08-27

can you program it for half degree.

Asked by: peter
No, if you are using Fahrenheit. If you are using Celsius then a change to Fahrenheit is in effect 1/2 deg Celsius. (Actually 0.9 deg)
Answered by: hamadryad
Date published: 2021-08-11

does it have lock controls?

to keep little hands from touching it?
Asked by: DRscott
Yes. You can lock and unlock the thermostat via the app though wifi. Can't be done at the thermostat.
Answered by: DanB
Date published: 2021-08-04

Can you lock the keypad?

Can you lock the keypad?
Asked by: Bo
Yes it can. It must be locked and unlocked through the app. Cannot be done at the thermostat.
Answered by: DanB
Date published: 2021-09-10

How do you recover sensi password. Lost all paperwork before installing.

How do you recover sensi password. Lost all paperwork before installing.
Asked by: Herbert
In my documentation, on the thermostat, there's a menu page labeled "About Thermostat". On that page there's an option to perform a factory reset. If you can, download a user/owner manual. If it's for your online account, look for "forgot password" on their web page.
Answered by: DanB
Date published: 2021-07-29

If we loose our wifi will the thermastat still operate?

Asked by: Cheryl
Yes… whatever the settings were when it went off line will continue until you get back on line or until someone changes them directly on the unit.
Answered by: Cordless81
Date published: 2021-07-22
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