Features:

  • Named the ‘Best Value’ smart thermostat of 2017, 2018 and 2019 by USA Today’s Reviewed.com
  • 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
  • GET REBATES: Find utility rebates in your area through the rebate finder at sensi.emerson.com/rebates
  • 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
  • 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. To check system and router compatibility, refer to our online compatibility resources at sensi.emerson.com/compatibility
  • SMART HOME COMPATIBLE: Works with Amazon Alexa, Google Assistant, Apple HomeKit (c-wire required) and Wink smart home platforms
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the free 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
Works Perfectly With...

I'm sure it's fairly common practice but when I purchase something on Amazon I always look at the 1-star reviews first. Despite some of the issues I read about regarding this thermostat I thought I'd give it a try. It works perfectly and the installation couldn't have been more simple and straightforward using the sensi app. After reading some of the reviews from people who had issues with this thermostat I came to the conclusion that the unit relies heavily on a good power supply since there's no c wire. That said I'm using Energizer ultimate lithium ion batteries. Also I'm sure they will need to be changed frequently but it's a small price to pay for this relatively inexpensive unit that seems to function perfectly at least for me. I have a HughesNet Wi-Fi router and Google pixel 2 Android phone on Verizon's Network and I'm having no issues whatsoever. I'm thrilled because our furnace does not have a c wire and I've been shopping for a Wi-Fi thermostat for a couple years now. This was the first one to come along that seemed like a viable option. I'm sure it doesn't work perfectly for everyone but it did for me!

Easy set up - don't buy expert installation. Smart Thermostat at good price point! NO C-WIRE required.

Ww love this smart thermostat that DOES NOT REQUIRE THE C-WIRE. We wanted to update at minimum to a programmable thermostat but thought a Smart one would be even better as we have Alexa and would add value to our home come time to sell. This one has the right price point and does what the more expensive thermostats do (unless someone can correct me? maybe I don't know?). EASY TO SET UP- please do not pay for installation - that would be ridiculous. There is a step by step installation guide in the app once you download it - it's SO easy. We've only had it a few days but no problems; Alexa adjusts it on command, the app adjusts it, I can use the buttons on the unit itself to adjust. My only complaint thus far (and perhaps I just haven't figured it out) is it seems you can only set the schedule through the app.

Works great.....

First off I had a 4-wire thermostat that was on my system with 3 postion switch... heat off cool.. No emergency heat...it's a air conditioner with an electric heater (not heat pump heater) all in one Goodman unit ..... there was a yellow wire. a green wire ..... white wire and a red wire....and a jumper wire between RC and Rh that's all... I had no C wire and this absolutely 100% works on my system with no C wire the batteries keep the screen lit ....... the wifi everything hooks up fine..... So 5 stars for the thermostat pretty easy to setup.. Need to start a account with sensi Free no big deal.. App works great.. Now for me the downside is it doesn't work well with Alexa it doesn't do the basic commands you can go to heat and you can go up and down on the temperature. Couldn't get it to actually turn the AC on or turn the unit off..... The Sensi app works fine up down temperature everything works great heat ac automatic... just doesn't work all that that smooth with Alexa. Over all .... So if just a good easy wifi thermostat I would highly recommend this....... Updated update update update 1/28/18 wife figured it out... works great 10 stars You have to say exactly Alexa set thermostat setting to cool Alexa set thermostat setting to heat Alexa set thermostat setting to off Alexa set to what ever degree you want

Easy to setup. Helpful Support

I did a lot of research on a smart thermostat before purchasing. First and foremost was the ability to monitor and set temperature remotely, and to properly control my heat pump. An added bonus is this thermostat is compatible with Ecovent systems for my future upgrade to zone control. After studying most of the other units available, I came to the conclusion that while Sensi does not boast as many features, the features it has are extremely useful to me. That was the kicker. The fact that this unit costs hundreds less than the more feature laden units out there is also a key factor. I am not fooled by features that won’t be used, or used so seldom as to be superfluous. After all, what do you expect a thermostat to do? Regulate temperature – Check; Ability to schedule heating/cooling – Check, Be able to control from a smart phone – Check. Sensi does it all. As for learning behavior and the other features rife on other units. Those features require expensive sensors, tuning and frustrating and repeated calibration. For what? So it knows how warm to keep the house? Can’t you figure it out? It is my opinion you are better off saving the money, setting a comfortable schedule and forgetting it. The other thermostats to me seem excessively expensive and do no more than this one. Installation is very well done. I had one mystery wire on my old setup. I couldn’t figure out where it went. That was solved with a quick call to the tech support. Other than that, if you can install a light switch or light electrical, you can install this. The web application and syncing the thermostat to the app was easy. Again, if you can’t figure that out, why are you getting a smart thermostat in the first place? Very basic, very intuitive. Not a lot of functions, but they all work. This is a well-designed, well-engineered product. You may want more features, but you don’t need them, in fact most people never use those features anyway. Best bang for the buck on the market.

Inexpensive Alexa compatible thermostat

Great thermostat! It is wonderful being able to simply ask Alexa what the thermostat (inside house) temperature is! Fantastic on days like these with night temps in the 30’s and daytime in the 70’s. Just tell Alexa to set thermostat to heat or cool! Change change temperature settings by voice as well. The Sensi app is great for when you are in bed and you don’t want to get up nor do you want to wake up your partner. Just open the app and make your adjustments. Also using the app when away is great! If you are on vacation and your home area is forcast for a heavy freeze, just turn the heat on from anywhere! Installation was pretty straight forward. Seems that most applications WILL need the “C” wire. I bought the C wire kit but didn’t need it! I was injured and unable to get into the attic. A friend with HVAC experience did it for me. Took about 10 minutes and didn’t need the C wire kit. Setup wasn’t too bad. Had lots of problems at first and called customer service. The Sensi service was down at the time which explained the difficulty. Once the server was back up, it took seconds to have the app recognize the thermostat and mere seconds to have Alexa ready. Just remember to enable the Sensi skill beforehand! I have had the unit installed for several weeks. No issues. I don’t use the program schedules as I really don’t see a need when you can use the app or Alexa at any time but a nice feature for those who use it. I haven’t used the auto mode but I plan to. It appears that you can select heat, cool and auto. I’m curious to see if the unit will automatically switch from heat to cool on its own depending on the household temp. If so, that would make this unit even better than a five star!

Need reassurance? This is the one!

If you are unsure about what you are doing, or if you are not sure if this thermostat will work in your situation, the app or online tools this company provides answer all your questions and give you the reassurance you need. I was very impressed with the clear, simple, detailed, step-by-step instructions, which included optional video links for each step. I also needed to talk with a person from Sensi 3 different times as I installed 10 thermostats at a school. We chose them because of the simplicity of the design and the enormous quantity of professional guidance on the install. It is so impressive that a company in this business market still provides a phone call to a human who knows what they are talking about and is very helpful. If you are not sure which thermostat to buy, especially if you are looking for something in a business setting, I would recommend Sensi. Ease of use means no one will mess up the programming. And the app means you have a very easy way to catch those units that someone in the building kicked on and didn't bother to turn off when they left! This is the one you want!

Setup in under 10 minutes/Looks good

My HVAC Details: Natural Gas Furnace/Forced Hot Air + Centeral A/C with NO C-Wire I have a rental so I wasn't about to run a new wire from my furnace to the thermostat. I really wanted to replace the $20 Honeywell thermostat which I had proven was very inaccurate at reading the temperature. I decided to get a WiFi enabled thermostat for a couple reasons. 1) After getting a Google Home, I've been making a movement toward home automation and voice activated controls. 2) My gas company offered a $100 rebate toward a WiFi enabled thermostat so I paid almost nothing for it. Super easy installation. 1) Throw breakers for Furnace/AC 2) Unscrew wire terminals and pull wires from old thermostat plate 3) Remove plate (pay attention to which wire colors go to which designations) and mount new plate 4) Re-insert wires into same color designations as old thermostat. 5) Plug new Thermostat onto new plate. 6) Download Sensi app. 7) Turn breakers back on 8) Open app and follow the short instructions. Done! The thermostat looks slick (crisp display, Amazon pics don't do it justice) and the app looks nice too. I haven't interfaced it to my Google Home using the Wink app yet. So far, I'm very satisfied.

Still working nicely

Only have had this a few days. Never having replaced a thermostat before, I can say thanks to thier instructions, it was pretty simple to do. It's much easier to read than my previous thermostat as well. Edit: Per Sensi, what I am seeing is normal. If you have your thermostat set to AC and it is running, in the app you will see the thermostat light up blue. If you have it set to Heat, if the system is running in the app thermostat will show up red. Regardless of heat/ac is set, if it isn't currently running, the thermostat will show grey. The temp can only be adjust when the system is running. Update: It's been almost 6 months since I got this. We've since upgraded our furnace/ac unit to high efficiency units and it still works good. It has dropped off the wireless a few times, but thanks to the sensi it is easy to reconnect. If you don't have the app, you can find the manual on their website. They also started sending usage charts, starting in November so you can see how long your furnace/ac runs every month.

works great ;)

I wasn't sure how this thermostat would work for me but I must say I am very pleased. I live in Florida and usually have the AC off when I'm not home. but by using the app for this thermostat I can turn it on remotely before I arrive which is an awesome feature . some people complained that it goes offline and it does from time and you cant use the app but mine only lasts a few minutes . the Install is easy I used the app and watched a lady on you tube do an install and it was simple . Another feature that's great is you can schedule when you want it on or off so even if it the app goes offline it will still run how you like . I'll have mine set to turn on a little while before I get home from work and etc...overall I'm very happy with this thermostat and wish I would've bought it sooner ..oh I almost forgot I also have it hooked up to my Amazon echo's and use my voice to control it as well . many great features :) if your looking for a modern upgrade to your old thermostat this one will do :)

Great thermostat. Great value. Great App. Easy installation.

So happy with this smart thermostat. I just bought a house in NC and I have never done any electrical work but this was easy to install thanks to the very clear step by step instructions provided by the app. I will say it took us a bit more than 15 minutes, but it's so worth it. Because we both work during the day, setting up a smart schedule makes so much sense to us. We had this for 3 months and it literally already paid for itself. The app is extremely easy to use. I made a lot of research work and I don't believe anything fancier (like Nest) would really save me more money than this. I can't wait to replace my other thermostat downstairs which has zero features (just a number for temperature reading). I will point out to few helpful things: - Installation was easy enough but fitting the cables in the slots requires patience. Don't get frustrated and don't wait until your house gets really hot to do this. You will be sweating over the box trying to fit these tiny wires in. - My thermostat is upstair and my router (it's a modern router I bought of amazon, not the junk the internet company rents you) is downstairs pretty far away. Connectivity works great and the thermostat is always connected. But note I had a C-wire so the batteries are just back-up power for me and I assume this helps. - Finally, I had trouble connecting the thermostat from the app, when i realized that you have to be connected to the 2.4GHz wifi network in order for it to work. My router is a modern “dual band” router so it uses both 2.4 GHz and 5 GHz Wi-Fi (we have two different wifi networks). I usually only use the 5GHz network because it is faster, but I just had to connect my phone to the 2.4 GHz network (called "guest" in my house) in order to pair the app with the thermostat. Scary 10 minutes where I thought that after all my efforts the thermostat was not compatible or too far away from the router.

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