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    Emerson Sensi Smart Thermostat

    Model # ST55C|Store SKU # 1000830270

    Overview
    Specifications
    Reviews

    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 qualified Sensi support team is available seven days a week: sensi.emerson.com/support, support@sensicomfort.com, 1-888-605-7131

    1. Named the 'Best Value' smart thermostat of 2019 by USA Today's Reviewed.com
    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. GET REBATES: Find utility rebates in your area through the rebate finder at emersoncanada.ca/rebates
    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
    1. SMART HOME COMPATIBLE: Works with Amazon Alexa, Google Assistant, Apple HomeKit (c-wire required), SmartThings and Wink smart home platforms

    Specifications

    Dimensions

    Assembled Depth (in inches)
    3
    Assembled Height (in inches)
    9
    Assembled Weight (in lbs)
    1.53
    Assembled Width (in inches)
    8.5
    Packaged Depth (in inches)
    1.53
    Packaged Height (in inches)
    9
    Packaged Weight (In lbs)
    85
    Packaged Width (in inches)
    3

    Details

    Automatic Heating/Cooling Changeover
    Yes
    Backlit Display
    Yes
    Battery Back-Up
    Yes
    Battery Operated
    Yes, Yes
    Built-in Wifi
    Yes, Yes
    Certified
    Yes
    Colour Family
    White, White
    Country of Origin
    MX-Mexico
    ENERGY STAR®
    Yes
    Lockable
    Yes
    Low Battery Indicator
    Yes
    Program Type
    7-Day
    Programmable
    Yes, Yes
    Smart Technology
    Yes
    Vacation Mode
    Yes

    Warranty / Certifications

    3-year warranty
    Sensi Smart ThermostatPhoto of productFrom 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 qualified Sensi support team is available seven days a week: sensi.emerson.com/support, support@sensicomfort.com, 1-888-605-7131
    Emerson
    1000830270
    Sensi Smart Thermostat is rated 4.2 out of 5 by 62.
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    Rated 5 out of 5 by from So glad I bought Installation was quick and easy. Mind you... I had my brother do it and he is an electrician. I'm sure if you are tech savvy you could connect to internet, but again I had help. I have not had any problems. I was able to easily check and control when on holidays. The screen is very simple and clearly marked, making it easy for anyone to control manually.
    Date published: 2020-02-08
    Rated 2 out of 5 by from Easy install but maybe a faulty unit? We purchased this with the Enbridge rebate but unfortunately returned it a couple of weeks later. The unit was easy to install and we had no issue with wireless set up. However we were finding our house colder than usual when set to our normal temperatures. We kept adjusting and still found it cold. We finally put a thermometer next to it and it was over two degrees off. The wifi wasn’t important to we returned to a programmable Honeywell and woke up warm today.
    Date published: 2020-01-31
    Rated 5 out of 5 by from Good/convenient Very good product, easy install.The app is great. You can follow your daily/monthly consumption.
    Date published: 2020-01-24
    Rated 5 out of 5 by from Remotely controllable and Alexa compatible I had some problems with installation. The tech service number was a great help and stepped me through to correct why I couldnt get it connected. Basically, I needed to turn off the 5G network on my phone so that only the 2.4G wifi was on.Once I did that it worked perfect. I have multiple daytime schedules running. I am able to change the temperature remotely outside of the home. I dropped the temperature to 15C while I was on vacation and then set it back to normal when I got back from the airport. It is compatible with Alexa. I can give Alexa voice commands to change the temperature.
    Date published: 2020-01-23
    Rated 5 out of 5 by from Easiest installation! With rebate; only $21! This was by far the easiest installation ever! Emerson has an amazing app that walks you though the install. My thermostat was installed start to finish in less than 20 minutes, and works great! At the time of purchase, there was a $75 rebate on the thermostat through Home Depot and Enbridge gas. An additional $6 energy rebate was applied, along with a $10 email subscription discount, so the total I paid for a $109 thermostat, with tax was $21!! You can't go wrong!
    Date published: 2019-12-30
    Rated 5 out of 5 by from Simple to use I bought one for our cottage 4 years ago and it has worked flawlessly for monitoring the heating system. I just bought a second unit to use at home on our boiler system. Easy to install and easy to navigate the app generated instructions. Highly recommend. Also, the most value priced of any wifi thermostat. Thoughtfully engineered.
    Date published: 2019-10-12
    Rated 5 out of 5 by from Every house needs one Simple to install worth every dime. I can change the temperature on my thermostat before I even get home. Sends alerts if a door or Windows left open.
    Date published: 2019-08-23
    Rated 4 out of 5 by from sensi wifi good bang for buck Good features for the price. Wifi enabled, so you can change settings through your app, useful in 3 storey home. Can set schedules. Seems to eat through batteries quickly though.
    Date published: 2019-07-12
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    I'm considering purchasing the Sensi. Please let me know if the Geofencing feature can be turned off and if there are any motion sensor features that turn the display on as you approach. Thanks. Jay S

    Asked by: JAY S
    Hello Jay S, Geofencing is one of two scheduling options. You can choose to use geofencing, regular scheduling, or turn all scheduling off and hold a specific manual set point. We do not currently have any kind of motion sensor with our product.
    Answered by: Product Expert
    Date published: 2020-02-06

    Can I switch to AUX heating manually and force to not use the heat pump temporary?

    Asked by: albertt
    I do not have a heat pump, all I know is it’s easy to return an item at Home Depot, so install it and test it
    Answered by: Mike
    Date published: 2020-01-10

    Is the Sensi Wi Fi thermostat easy to install

    Asked by: Bren
    Hello Bren, Thank you very much for your question. We are glad to say that we have had a good amount of feedback in the past that suggests that this is a thermostat that is easy to install, however there are two links for you below. The first one is an installation guide, and the second one is a manual operation guide. We hope this helps! https://sensi.emerson.com/documents/sensi-wi-fi-smart-thermostat-install-guide-en-4849238.pdf AND https://sensi.emerson.com/documents/sensi-wi-fi-smart-thermostat-manual-operation-en-us-4849464.pdf
    Answered by: Product Expert
    Date published: 2019-11-21

    display shows heat-off-cool. i have 2 stage ( h/c ) heatpump with aux and emer electric backup heat. will device work on my system? ( current, old therostat has heat-emerg-off-cool with 4 light area for pump, aux, emer, and malf )

    Asked by: john75943
    Hi John75943, Thank you for the question. Please refer to the wire picker on the link provided. https://webapps.emerson.com/resources/wire-picker.aspx Best regards,
    Answered by: Product Expert
    Date published: 2019-11-07

    can you manually raise or lower the temperature from the thermostat or do you have to always do it from your smart phone?

    Asked by: BJ207
    Hello BJ207, Thank you very much for your question. The answer is yes, you may operate the thermostat like a typical manual thermostat from the wall as long as you do not have the Keypad on Lockout. We hope that this answer helps, and please do not hesitate to reach out to us with any other question or comments. Best regards.
    Answered by: Product Expert
    Date published: 2019-04-17

    I have the sensi thermostat and it is going through the batteries within 2 months. noticing in the thread the stat should work off the power from the furnace. What needs to be done in the stat for this to happen?

    Asked by: jaward
    You will need to have the wiring checked between your furnace and the thermostat. We had that same issue and found out the guy who installed our furnace had not wired the thermostat to the furnace correctly.
    Answered by: Kend
    Date published: 2019-04-10

    est-ce qu'il est compatible avec les anciens modèles avec deux fils seulement.

    Asked by: Rafi
    Hi Rafi. Sensi with HomeKit does require a common wire to help power the Wi-Fi radio with when a customer has heat only or cool only systems.
    Answered by: Product Expert
    Date published: 2019-03-21

    How often do you have to replace the batteries.

    Asked by: Dw0124
    Hi Dw0124. Depending on their usage, your batteries should last between 6 months to a year.
    Answered by: Product Expert
    Date published: 2019-03-20
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