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

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.

This thermostat is very uncomplicated, but does everything a person should want out of a smart thermostat.You can pay hundreds for other smart thermostats but none will heat/cool you home better than this Sensi Lite.The app interface is clean and easy to understand. You can set multiple heat/cool scenarios and activate whichever one needed at the tiime.One feature that I like in particular is the "Early Start" that will start heat/cool early to achieve your target temperature at the specified time.For many people who do not have the C-Wire, this thermostat will work perfectly without it. No need to worry yourself and suffer sleepless nights over C-Wire. With or WITHOUT C-Wire this thermostat will do the job for you. Enjoy your sleep with no C-wire nightmares.I have owned other smart thermostats and some (more expensive than this) have had unreliable connections to wifi. They would be offline as often as ONLIINE. This is very annoying when you want to check the temperature or wish to change settings when you're away from home.The Sensi Lite has been ROCK SOLID in its' online connection. In the months since installation, I have never, even ONCE, observed it being Offline.I have recommended this to other family members.If you want to keep your home heated or cooled to a specific range of temperature and don't want to worry if you will freeze or boil in your home due to a rogue thermostat, then the Sensi Lite is for you.Check around and you will find almost all other smart thermosts to be MUCH more expensive than the Sensi.This is reasonably priced and will do a great job for you.UPDATE: After 2 months of use, the touch sceen on the thermostat croaked, so I was only able to adjust temperature in the app. I purchased this a "Used: Like New", but as you may know you're out of luck after 30 days. Fortunately, Amazon gave me a grace period and agreed to refund. But, don't count on a refund past 30 days.I repurchased this SAME thermosat, but NEW this time an added a 36 month warrnty, to be safe.I am still sold on this thermosat, but anything can malfunction, so I don't believe I'd buy this thermostat as refurbished. I would buy this NEW.

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.

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 installEasy to use manuallyEasy to use and program through the app3 levels of temperature toleranceCons:Would like a color display that is available on more expensive units.

This was purchased for a church building where areas are unoccupied at various times. This first purchase was a trial. The heating system is hot water with a central boiler serving several zones.We found this thermostat much easier to install and program than a previous brand we had we had tried to use. It connected easily with our existing Wi-Fi. For our system (heat only) it required a “C” wire but fortunately the existing wiring contained a wire we could repurpose. We haven’t used the early start feature yet we’ve just estimated the time to achieve the set temperature and programmed the system to come on soon enough to achieve it. A conversation we had with the the help line informed us that the thermostat will learn the time needed to achieve the correct temperature.The one call to the help line was very useful. The wait to be connected was fairly long, 15 minutes or so, but the gentleman was very knowledgeable and able to answer all the questions we asked. We have also emailed a question and received an answer but the response is slow.We’re pleased with the appearance of the unit it looks very solid and it’s not obtrusive and it is also easy to read. We also like the fact it can be locked to prevent unauthorized adjustment.It has been convenient and easy to install the app on multiple phones and nice to be able to check and adjust programs remotely. It is also nice that it connects to some weather information and displays the outside temperature.It’s great to have the room at a comfortable temperature when you expect it to be.We will also connect the a/c system to it later which now runs on a separate device.We have been pleased with the unit and have ordered two more for other areas.

Installation was over quickly, wiring straightforward and easy. I liked the humidity of the home on my phone display. The child lock was great to have also to stop Nana from adjusting the temperature. Looks great, not overly complicated and over priced. Large numbers easy to see from a distance. Hooked up to my WiFi the first time and no issues. I have gas heating and central air no compatibility issues. I tested out the temperature display with another thermometer and it was accurate.

It was fairly easy to install, I'm a female & my Google nest failed after a few years & over a month of going back & forth with tech support and not being able to control it with my phone. Being a night shifter having to get out of my bed to go to the thermostat was devastating!Sensi has been great & had been doing fantastic since I bought it!

I love this thermost, but I also hate it.The good...Its VERY easy to installIt looks great (very modern)It gives me all the info I needThe dedicated app is very niceThe bad...The problem I have had with this thermostat is that it tends to lose connection and when it does, the entire HVAC goes offline. I have been asleep before and woke up because I felt hot...yes the thermostat had gone offline overnight and the air conditioning just stopped.I never had this problem before with a thermostat. I liked this thermostat enough that I bought a second one, installed it hoping the first one was just a lemon.Nope, the exact same thing happened again. SonI realized that the flaw was in thos thermostat.Ultimately I bought a different brand that also has wifi but doesnt completely shut down when/if it goes offline.

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.

Great thermostat but make sure you have the right hook ups and wiring on your old furnace before removing your old thermostat or you will be in for a headache, basically do your research before tearing things apart and watch plenty of videos. Thermostat works great once it was hooked up and being able to control from your phone is a blessing.

Good

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

Worst price ever. Do not waste your time II purchased two of these units. I had them professionally installed. Both units keep loosing the wifi signal. This is very annoying when trying to manage the heat from the app when not home. In order to re-connect the wifi , I must detach the unit take out the battery's and re-install them. The units do not allow me to connect to wi-fi from the menu option on the unit. This is a very frustrating unit and 50% of the time it is off line. I cannot get the ap to switch modes from heat to cool. No options given on ap. No product support.