Model # ST55

Internet #301231478

Store SKU #1002348238

SENSI Emerson Sensi Wi-Fi Thermostat for Smart Home
0786710554827

SENSI

Emerson Sensi Wi-Fi Thermostat for Smart Home

  • Control from across the room or across the country with the app
  • Reduce energy usage with geofencing, scheduling and remote access
  • Works with Apple HomeKit, Amazon Alexa and Wink
$12900 /each
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Product Overview

From across the room or across the country, your Sensi™ Wi-Fi thermostat makes it easy to remotely control and schedule your home comfort - Anytime. Anywhere. Designed to work with the wires you already have, Sensi 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. 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 sensicomfort.com/compatibility. The intuitive app walks you through each step of installation, removing all the frustration and guesswork from the installation process. No experience required. Put your comfort on your terms with flexible 7-day scheduling options for quick, custom heating and cooling schedules that can save money on HVAC related energy costs. And with smart home integration options like Amazon Alexa, Apple HomeKit and Wink home automation network, your Sensi thermostat goes one step further to make your life simpler. And find out why Sensi thermostat is ranked “Highest in Customer Satisfaction with Smart Thermostat” by J.D. Power.**Sensi by Emerson received the highest numerical score among four brands in the J.D. Power 2016 Smart Thermostat Satisfaction Report, based on 2,509 total responses, measuring the opinion of customers who purchases a smart thermostat in the previous 12 months, surveyed September 2016.

California residents: see   Proposition 65 information

  • Ranked "Highest in Customer Satisfaction with Smart Thermostat" by J.D. Power
  • Remotely control your home comfort from your smartphone, tablet or laptop using the free Sensi app for Android and iOS devices
  • Integrates with Apple HomeKit (c-wire required), Amazon Alexa and Wink smart home platforms, and works with Google Home and Google Assistant via the free Wink app
  • Designed for an easy DIY installation with step-by-step installation instructions and video tutorials right in the free Sensi mobile app
  • Features geofencing for location-based temperature control, 7-day flexible scheduling and remote access, and helps you save money on HVAC related energy costs
  • Extensive compatibility with HVAC systems in most homes – a c-wire is required for heat-only, cool-only and heat pump systems without aux. To check system and router compatibility, refer to our online compatibility resources at sensicomfort.com/compatibility
  • Sensi is not compatible with electric baseboard or line voltage (2-wire) and proprietary/ communicating systems, and old millivolt (mV) wall, in-floor or gravity furnaces
  • In-app local weather information and indoor humidity readings
  • 3-year warranty
























  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Name Wi-Fi Programmable Touchscreen Thermostat + Free App Sensi Wi-Fi Programmable Thermostat for Smart Home, Compatible with Amazon Echo Emerson Sensi Wi-Fi Thermostat for Smart Home Wi-Fi Smart Thermostat
Brand Honeywell Emerson SENSI Honeywell
Ratings (624) (450) (450) (460)
Features Automatic Heating/Cooling Changeover,Backlit Display,Built-in Wi-Fi,Daylight Savings Time Ready,Filter Monitor,Removable Interface,Touch Screen,Vacation Mode Automatic Heating/Cooling Changeover,Backlit Display,Battery Back-Up,Battery Operated,Built-in Wi-Fi,Daylight Savings Time Ready,Lockable,Low Battery Indicator Automatic Heating/Cooling Changeover,Backlit Display,Battery Back-Up,Battery Operated,Built-in Wi-Fi,Daylight Savings Time Ready,Lockable,Low Battery Indicator Automatic Heating/Cooling Changeover,Backlit Display,Built-in Wi-Fi,Daylight Savings Time Ready,Filter Monitor,Lockable,Touch Screen,Vacation Mode
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Customer Questions & Answers

Does it have an internal battery

Asked by: Paul
The thermostat has a battery backup using 3 AAA batteries. The unit is normally powered by house current.
Answered by: Rom77
Date published: 2017-05-03

Does the wifi connection drop a lot?

Asked by: N8
No, And when the wifi drops and comes back on, the Sensi automatically reconnects.
Answered by: BostonGuy
Date published: 2017-02-26

Lost internet connection

Before I buy, I have to ask, Is there some kind of backup if you lose internet connection ?
Asked by: OverKill
It's supposed to maintain the schedule that's active if the wi-fi connection is lost, and believe me, the wi-fi connection on mine drops out a lot. But my schedule still functions without the wi-fi. The schedule can't be revised without the wi-fi connection. The wi-fi connection on mine drops out every few monts and I have to delete the thermostat in the app and reinstall it. A real pain.
Answered by: Bobs72
Date published: 2016-11-30

Does the display on the thermostat stay lit all the time as pictured in the add?

Does the display on the thermostat stay lit all the time as pictured in the add?
Asked by: bobanshee
Yes. Go to settings on App, Select Thermostat Display, then go to Continuous Backlight and select "ON". This will keep thermostat lit all the time. App works great on my Android phone.
Answered by: ASKJ8069
Date published: 2017-06-13
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Customer Reviews

Emerson Sensi Wi-Fi Thermostat for Smart Home is rated 4.5 out of 5 by 449.
Rated 5 out of 5 by from Works well and simply to use and setup. I had it working in 30 minutes. The instructions to insta... Works well and simply to use and setup. I had it working in 30 minutes. The instructions to install this thermostat should be the gold standard for instructions. It was a simple step by step instructions on your iPad with videos if you got stuck. The thermostat works great remotely and it even tells you the humidity in the house and the local weather all on one display on your remote devices. Easy to tell if everything is working. The thermostat itself has a large read out, easy to see even without glass, on only the important info displayed, temp set and current temp, time, battery condition (runs on AA), heat/cooling mode, fan mode and schedule on/off (this one is so smart and if you are on vacation and want to set one temperature) One concern is the thermostat clips onto the plastic bracket, we will have to see if the clips last. So far they seem fine and you would only have to take it off to change the batteries. To I don't think it is a big issue. All in all a great thermostat.
Date published: 2017-03-09
Rated 2 out of 5 by from I mean, it controls the ac/heat just fine but the wifi does not connect and when it does it disco... I mean, it controls the ac/heat just fine but the wifi does not connect and when it does it disconnects. It's very annoying. So far, I've disabled wifi and I am using as a traditional thermostat. I tried returning and getting another one, same thing.
Date published: 2017-03-21
Rated 5 out of 5 by from I have only had a few weeks, but most people want to know the ease of installation in a review an... I have only had a few weeks, but most people want to know the ease of installation in a review and how it works initially anyway. Installation was very easy, I have an AC unit with a gas furnace inside. Setting up the WiFi was easy although a bit more challenging as I think they should have explained you are switching from a closed network with their security code to your home network with a little more plane language, but if you have any pc and home network set up you should get it OK. I really really like the ability to control the thermostat remotely, especially if we have a baby sitter or someone staying at the house and we are not there and they feel uncomfortable changing y our thermostat you can easily make a change.
Date published: 2017-01-31
Rated 1 out of 5 by from Garbage This unit does not stay connected to wifi. Getting it reconnected entails resetting the unit, which takes 10 minutes and only stays connected for 20-30 minutes before dropping the connection again. This is the only device in my house that refuses to stay connected to either of my two access points. To make matters worse, you can only configure the schedule using the wifi app, not on the device itself. If your unit is not connected to wifi, majority of the features you would want from a digital Thermostat are inaccessible.
Date published: 2017-03-14
Rated 5 out of 5 by from If you want a wifi thermostat, read up on 'C' wires and see if you have one or not. I had a 4 wi... If you want a wifi thermostat, read up on 'C' wires and see if you have one or not. I had a 4 wire system (gas heat, a/c) so this seemed like the way to go. Everything from installation to wiring to programming is accomplished on their app. Installation took maybe 5 minuets and it took 3 mins to program it. Really easy and works really well.
Date published: 2017-02-07
Rated 5 out of 5 by from Easy to setup. Can control using App on iphone. Easy to setup. Can control using App on iphone.
Date published: 2017-01-31
Rated 5 out of 5 by from This thing has been awesome for me - I travel a lot for my job and in the past had sometimes forg... This thing has been awesome for me - I travel a lot for my job and in the past had sometimes forgotten to change the thermostat before leaving on a week-long business trip. I find it frustrating to heat/cool my home when I'm not actually there! Sensi was easy to install, even for a novice like me (I'm not much into DIY projects) and it's been great being able to adjust the temp in my home, even when I'm across the country. It's been a very wise investment for me and I've recommended it to many of my friends and family. I love landing at the airport; making a temperature adjustment as I taxi to the gate; and, my home being comfortable as soon as I walk through the front door.
Date published: 2017-02-20
Rated 5 out of 5 by from Works as specified. I first checked to make sure the wifi signal was sufficient in the area of th... Works as specified. I first checked to make sure the wifi signal was sufficient in the area of the thermostat. I used an Android app to measure it. Reflectivity and absorption of microwave signals used in wifi can make placement tricky. Line of sight is best. Mine was not but still had a -55dbm signal available so it hooked right up. If you cannot get yours to hook up, try moving your hub even a few inches and try again. We have had a balmy fall and I have been running mine at 60 degrees. This week we finally had some chilly mornings in the 30s and I moved it up to 68 and then back to 60 when I got to the office. Works very well with my Wink hub 2
Date published: 2016-11-11
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