Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25

I've had this thermostat installed about 2 weeks now. I installed it with the White-Rogers wall plate which I highly recommend. It makes for a nice clean installation. I decided to move the location of my thermostat, so I also purchased a length of 5 conductor 18 gauge wire. The installation was very straight forward. WIFI setup was simple and the app connected just fine. The most work for me was running the new wiring. I have an electronics background so connecting it to the AC/Furnace was not a big deal. You may need to call your AC tech if you want to do this as well. I am really pleased with this thermostat. I tried the more sophisticated and expense ones prior to purchasing this one. I really like the simplicity of this thermostat. It has fewer options than the more expensive units but to be honest, that is a blessing. The touchscreen makes manual operation very simple. Touch one location to change between off/AC/Heat/Fan Only modes and then touch the up or down arrow to set the desired temp. I found the temperature to be very accurate and within 1/2 a degree of several manual A/C Service thermometers. It worked right out of the box with no necessary changes to the few parameters that can be set. Connection to my WIFI and the app was straight forward and worked first again. Again, I like the simplicity of the app. I really like that the background of the app changes from gray to blue and red corresponding with off/Cooling/Heating the thermostat is calling for. The app does allow for a basic 7 day schedule. It's very intuitive and simple to set up and use. I do wish it had the color display of its bigger and more expensive brothers, but that's the way it goes. That is where the price differential comes into play. The display is large and easy to read from a reasonable distance. I am 72 with diminished eyesight and my favorite chair is about 12 feet from the thermostat and I can read it just fine. But it doesn't really matter as with the app I can see and control the temperature from anywhere in the world. The app also shows relative humidity which isn't a big deal but a nice touch. Pros: Very nice looking, especially with the wall plate behind it. Super Easy to install Easy to use manually Easy to use and program through the app 3 levels of temperature tolerance Cons: Would like a color display that is available on more expensive units.

I am impressed. First of all, watch the installation video in the item listing in Amazon. It is the first video for this Sensi Lite Smart Thermostat and it could not be anymore thorough than it is. If you want step by step it is that and logical. Then the app itself does the same thing, step by step as well. These folks actually cover all the bases. I know a lot about a lot of this but not AC and heating. It went off without a hitch, I have an old 4 wire system with no C wire and what is really cool is BEFORE YOU EVEN BUY you can d/l the app, go to the step as if you are installing a new one, go where you identify the wires on your old thermostat and it will tell you if it will work for you if you are not sure. I had this thing on, up, and connected to wifi and running in about 10-15 minutes, no issues. The only thing that concerned me was I was reading reviews before buying it and some people complained about it losing connectivity frequently. Only 3 minutes after installing that happened one time, and as I was reading the re-connect instructions it prompts you to, then it reconnected on its own before I could do it. For all I know that could have been my wifi burping, it does sometimes. >>IF<< I have that as a recurring issue I will be returning it because my router has plenty of reach and several devices further from it than this thermostat never lose connection. We shall see. I am just trying to give a full picture, I have no complaints but that was the primary reasonable one I saw in the negative reviews. So far I love the thing, the display is very cool, most of the time I will be bumping it manually walking by and that is a piece of cake. I have old eyes and appreciate the large numbers on the display too. I also like I can adjust it remotely from 4 states over as well. Honestly if you just want a remote app and basic functions with a schedule (I won't use) I don't know about all these others that cost way more why you would buy one of those. It is also nice looking. Oh yeah, it works on Alexa and other voice control things I also do not use. I think you get a lot of bang for the buck on this.

I have a home that was built in 2006 and I work in a technical field (engineer) so I am familiar with troubleshooting hardware/software problems. Anyway, my problems with this unit started immediately. During installation, one is supposed to note the letter codes that the existing thermostat is connected to so that the new thermostat can be notified (via wifi and on app on your phone) how to program its terminals to match the original thermostat's functionality. Unfortunately, my existing wire connection was not recognized as being valid by the app (even though my home is relatively new, has a C wire and works properly with the original controller). I didn't let the this deter to me as I was sure I could fine a setup that would work through a little trial/error and voltage measurement. I was able to program my thermostat the first time without any issues; however, the setup I entered didn't work (system produced heat when it should have been cold), so I tried to reprogram the thermostat for a 2nd try. When I searched for my wifi network on the app, I was informed that no networks could be found, which was strange since all my other devices (computers, tablets, TVs, etc) had no issues connecting to my wifi. No problem I thought because I was given the option of entering the name of a network manually, which I did. After entering the name I was asked to enter the network's password twice, which is also strange since double entry is typically required for setting up online accounts, but not for connecting to your own wifi. Anyway, I entered the password twice and things seemed to be okay for a short time, but then the app kept informing me that it was losing its connection to the thermostat. I put the thermostat in "setup" mode by pressing the mode button for 4 seconds, but the thermostat would only stay in setup mode for a few seconds, and whenever it popped out of setup mode, the app would lose its connection again. What was really frustrating is that every time I tried to change the setup, I had to enter the network name and the password twice, which is pretty dumb for a "smart" device! I fought the system for about 2 hours and I was finally able to get another setup programmed, but that one didn't work either. At this point I decided I was done fighting the thing and I returned it. Again, I'm a competent technical person and my heat pump is relatively new and in good working condition. If I can't get it working smoothly, I don't think many others will be able to either. Perhaps I just had a lemon, but my advice is to steer clear of this finicky little monster.

Love the simplicity of this, everything is easy to set up from install to pairing with my Alexa and phone for a perfect match to my needs. Instructions were very easy to follow and did not need anything further to complete the job

Ordered a Nest thermostat and couldn't get the dang thing to work with my very basic AC system. All I have is cooling and a gas furnace. Wires--> red, yellow, green, white and blue. Nest said, sorry, not compatible. So I sent it back and bought this Sensi Lite Thermostat and walla, worked perfectly. Took me all of five minutes to install and connect to my router, and using the Sensi app on my phone, I'm now I'm able to control/monitor my ac from anywhere and I LOVE THAT. And I only paid $60 for this thing. 100% recommend this thermostat.

Technically, set up was easy, but there are some easy pitfalls. First, make sure the breaker for your A/C unit is off. I thought I did this, but apparently it wasn't the "right" breaker labeled "A/C" on my panel. Got some sparks while removing the wires from the old thermostat and blew a fuse in the blower. Fortunately, replacing the fuse is relatively cheap and easy, but totally avoidable. Second, the app warns during set up to check that cool air is coming out of your vents in cooling mode. This is NO JOKE, when you have an O/B wire. Coming back to a home that is 102°F when it's only 80°F outside isn't fun. You need to make sure the setting is right. In my case, I needed to set my "Outside Unit" as "Heat Pump". It may seem backwards on the surface, but that's how you get cool air. Getting to this setting in the thermostat isn't hard, but unintuitive. I wish you could do it directly in the app. Maybe you can and I couldn't find it. What you need to do is tap and hold the three dots for more than 5 seconds. The screen will change once and then again if you keep holding until you seen "AC". You have entered a hidden settings menu within a hidden settings menu. Tap the arrow and the "AC" will change to "HP" (Heat Pump) for the outside unit. After I did this, I magically had cool air. Once everything was working properly, this smart thermostat has been great! My only real complaint is that the connectivity can be a little spotty. When I tried to make a schedule, it would drop out, forcing me to start over. Could be the way my Wi-Fi works (going between 2.5GHz and 5GHz), or it could be the Sensi. I don't know. Overall, though, having the Sensi Lite has been a very nice convenience! I can change the temperature from my bedroom, from downstairs (since the thermostat and blower are located upstairs), and when I'm not even home. Having the automatic "change filter" reminders should prove to be helpful as well.

This is exactly what I was looking for. I wanted something that I could control on a schedule that way during my wake up time it would naturally get hot and encourage me to wake up and same goes for sleeping and this does that that install was really easy I bought a used item for $37 so this is a fantastic price. The item basically looked new. I couldn’t tell that it had been used or opened. I am really happy with the product. I would like a little bit more instruction on utilizing the app, but I was able to get the hang of it.

I love having the ability to change the thermostat from my phone, and that it didn’t require any additional hardwiring or the need for a C wire. Sensi was really simple to install once the app was downloaded, and took very little time or experience to do so. In reading the reviews prior to purchasing I had noticed several people who had said they had noticed issues with their Sensi system staying connected to WiFi; that has never been my experience. It’s been great for that. I was able to control it while on vacation with no issues at all, and have had no issues whatsoever with that. It is also well made and stylish, and was a great price point in comparison to other brands. My reason for the 3 stars is that the scheduling feature is not very useful and definitely not intuitive, so while you can create schedules for temperatures at various times of the day, night and days of week, they seem to have a mind of their own. Regardless of having multiple schedules in my application, it always seems to default to the original schedule I had created, despite not having that be the one selected. It has recently updated the application to allow for deletion of your schedules you have created, when previously it would only allows for times and temperatures within the schedule to be edited and the schedule to be renamed or copied. There is also not an ability to have a predetermined temperature that once it is reached, would simply allow either the AC and or heat kick on; and stop once that temperature is reached. In my opinion that would be an ideal solution to the scheduling issues. Instead of having that, or utilizing the geofence, I just use it as I would have with my old thermostat, just now with the convenience of having the ability to do so remotely. I have not seen any improvement in my electric bill since installation and daily usage over the past 6 months. So, while I appreciate the fact that I can remotely operate and like the appearance of the device itself, until those above mentioned issues are resolved, this would not be my first choice for a smart thermostat again.

Continuamente se desconecta de la señal. Tambien presenta fallos en los resortes de las baterias, estan muy frágiles y continuamente hay que apretarlas para que vuelvan a conectarse.

Good

I managed to get this working with my old brivis gas heating unit. This thermostat need C wire for gas heating. Old thermostat had only two wires. But the heater unit had C wire built-in which I rewired to connect to this thermostat to make it work. Setup is very straightforward. It's being one month since I installed and working perfectly. Happy with thr product so far. Note that this is a US product and it has US units and location/ weather information is only related to US or Canada. But I use Alexa and Google Home to align with my location in AU.

Works great. Love the Wi-Fi connectivity and being able to adjust remotely. Great for referring the temperature when coming home from a trip

This shouldn't be sold globally. You can't use it as a smart device outside Canada and the US.