Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, Pro Version, Works with Alexa, Energy Star Certified
Original price was: $145.88.$100.00Current price is: $100.00.












Price: $145.88 - $100.00
(as of Aug 18, 2025 03:11:35 UTC – Details)
Low Voltage WiFi Thermostat, Heat and Cool, Automatic, Electric Forced Air Furnaces, Gas Forced Air Furnaces, Heat Pump with Aux, PTAC, Push Button, Dehumidification Control Yes, Differential Type Adjustable, Digital, Dual Transformer Compatible Yes, Fan Settings Auto-On, Humidification Control Yes, Includes Positive Off Yes, Key Pad Lockout Yes, Minimum Temperature Control 32 Degrees F, Maximum Temperature Control 105 Degrees F, Mounting Direction Horizontal
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 in-app system usage.
MOST INSTALL IN 30 MINUTES OR LESS**: Use the built-in level and step-by-step app instructions for a quick installation. Skip any extra work painting or patching the wall thanks to the standard thermostat size.
SMART HOME COMPATIBLE: Works with Amazon Alexa, Google Assistant, Apple HomeKit (c-wire required), and Samsung SmartThings smart home platforms.
USAGE REPORTS: Monitor current day and historical heating, cooling and fan runtimes right in the app.
CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices.
SMART ALERTS: Sensi features smart alerts to help detect extreme temperature and humidity levels in your home.
Customers say
Customers find the thermostat easy to install and use, with one mentioning it took less than 45 minutes to set up. The device works well with Alexa and keeps house temperatures more even, with one customer highlighting its dual heat/cool mode functionality. Customers appreciate its quality, control ability, and value for money, with one noting they can control it from anywhere in the world. The WiFi connectivity receives mixed reviews, with several customers reporting constant connection issues.
9 reviews for Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, Pro Version, Works with Alexa, Energy Star Certified
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Original price was: $145.88.$100.00Current price is: $100.00.

Kate –
Stop searching and just get this one. It’s idiot proof and installation is a breeze.
I’ve had this thermostat for about a month now, and I’m really loving it. It’s been a bit of an eye-opener, as I realized that our old thermostat might not have been working properly for a long time. It used to randomly set itself to 85รยฐF, and since it wasn’t programmable, I knew it was time for an upgrade to something a bit more modern. So, here’s my take on it, with a few pros and cons thrown in for good measure.Pros:Installing this thing was a breeze. The moment I opened the box, there were instructions to download the Sensi app, which turned out to be a game-changer. It guided me through identifying and labeling the wires, making it easy even for someone like me with no electrical experience. The app even lets you snap a picture of your wiring for safekeeping, just in case.The built-in level on the wall attachment is awesome! I’m pretty particular about things being straight, so this feature definitely won me over.The app setup was a walk in the park. I started with a simple daytime and nighttime cycle, but you can get as fancy as you want with features like vacation modes and adjusting the AC remotely. It even helped me sync with my Google Assistant and the Samsung Smart Things app, although I ended up not using the latter (more on that in the cons).The usage report is a handy tool, especially because we had some AC issues last year. It’s great to see that our better insulation and updated windows are actually making a difference, even during the scorching Florida heat.I appreciate the flexibility to make tweaks like temperature and humidity offsets and changing the cycle rate. These are small things, but they really make a difference, especially for someone like me who’s all about maintaining the perfect humidity level.Cons:Unfortunately, it doesn’t play nice with Bixby. I’m not quite sure why, but I guess they assume you’ll use Smart Things if you’re into Bixby. For me, Google does the trick.The recent usage section could be more informative. It only shows how long the AC ran in a day but not the individual times or durations, which would have been helpful, especially during the hot afternoons. Also, I haven’t received a monthly report yet, and I’ve had the thermostat since mid-June.Occasionally, I had to change settings a couple of times before they stuck, but waiting a few seconds before going back to the settings menu seemed to help.Shortly after getting the thermostat, the AC drain line clogged, leading to inaccurate readings. The app showed the cooling was on for most of the day, even when the AC wasn’t running. It’s not a major issue, but it does affect the accuracy of your data.In a Nutshell:Overall, this thermostat has been a game-changer for me. It was a breeze to install and set up, and it works like a charm. It would have been perfect if it could connect to Bixby without involving Smart Things and provided more detailed daily usage reports. I usually keep our house at 78รยฐF during the day and 77รยฐF at night, and now it actually feels cool, unlike before. I’m really pleased with this purchase.
M. –
Great Thermostat
Very easy to install and program with the app. Works great with Alexa. Dropped my electric bill 50 bucks using this thermostat and replacing all my light bulbs to smart led’s. The Alexa app can control them all. Like this one because it isn’t some round black orb on your wall, unless your into that kind of thing. It appears to be a common thermostat that fits the rest of the decor in my house. Would recommend! Program it and put some money back in your pocket.
Eric Andrews –
Very Impressed
Well folks I must say that I am very impressed with my new Sensi Thermostats.Before purchasing I searched for the best fit/option that required very little to no modifications or adding jumpers or addition wires during installation.Brief Background: 21-year-old home, 2 thermostats, old thermostat failed – replacement required, Prime shipment (blah, blah, blah).1st unit took over 45mins because I tried to install it from memory.2nd unit installation took less than 20 mins (correct tools and followed the detailed instructions from the Sensi).Quick and Easy Install & Program Setup:1. TURN POWER OFF to HVAC system before removing the old thermostat (Risk of shortening the HVAC control board)2. Unpackage the 2 piece unit, keep the Welcome pamphlet handy for wifi setup3. Download the SENSI app to your phone or tablet4. FOLLOW the installation instructions from the app, step by step (it will save you time) – I must say that the installation guide from the app is as simple as it gets (Scale 1-5, 1 being Easy, 5 being Hard, this install is a “1”)Tools:A. Jewelers Philips head or Flathead screwdriver(s), used to terminate wiring to Sensi wiring terminal strip.B. Standard Philips Head & Flathead Screwdriver(s), used to disassemble the old thermostat and install the Sensi thermostatC. Optional – Wire Strippers, used to cut and strip wiringWIFI:Some of the reviews speak of issues connecting or dropping connection, I too had initial connection issues but after a couple of connected and failed attempts, reviewing a couple of pointless videos and brief online troubleshooting, the following should be your resolve (SIMPLE):1. Follow wifi connection instructions2. Once setup & connected, your unit may drop the connection3. Pull the faceplate off, remove batteries for 5 mins4. Insert batteries (Face Plate still disconnect from wall unit), wait 2 to 5 mins and the wifi will reconnect – Day 3 no connection issuesAlexa – I have not configured Alexa at this time, I will update this post once my units are configured…Update: 5/18/2021* Thermostats are now connected to the Alexa app and working flawlessly* WiFi connection – No issues since the last post* Battery Life – No issues since the last post
Jimmy Brown –
Beware of short cycling of your ac unit with this thermostat
Thermostat is easy to install, however it causes the ac to short cycle, even with the cooling swing set to the longest on/off period. When I was looking for a new thermostat, this one was rated near the top, but now that I have it I am seeing lots of reviews online complaining of the short cycling as well. The setting that I have it on it supposed to be 1.9 degrees, but say I have it set to 70 degrees, it runs a few minutes and it is still 70 degrees when it cuts off, stays off exactly 4 minutes and cuts back on. Thank goodness I have a time delay relay on my condensing unit. I will be removing the t-stat today and putting my old one back on til I can find a better replacement.
A. Donovan –
I have several of these: at home, at work, and at the cabin. Really easy to install and the software works well.I haven’t had a single issue with them over many years of usage.
Haywood Jablomie –
I’ll give this 5 stars since it is THE PERFECT thermostat for AirBnB hosts. That said, the geniuses at Emerson have decided to create an installation process that will not complete if you don’t have location services turned on, on your cell phone. They don’t mention this ANYWHERE in the instruction manual, or the troubleshooting page on their website. After you’ve wasted an entire night of your life, then spent more time on hold to get technical support on the phone…. It’s the very first thing out of their mouth…. But it’s NOWHERE in the instructions. EXTREMELY frustrating installation because of that.
JTNAGAM –
Works excellent & eas y to understand
BD Franske –
Had to replace the wiring down to furnace as a common wire was required but I knew this going in and luckily I have the skills to accomplish this , for a lot of people it would be difficult.When setting up the installation programming I was looking for a prompt or message of some sort looking for my wi-fi password , this never happened since I was using my I-phone 8 to set up the stat and the 2 systems joined automatically but did not mention this anywhere in the set procedure. This would have been nice to know sooner .
Aloin –
Everything works as describe.