Sensi Lite Smart Thermostat, Data Privacy, Programmable, Wi-Fi, Easy DIY, Works With Alexa, Energy Star Certified, ST25, Most Systems C-Wire Not Required, Except On Heat/Cool Only and Heat Pump System

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.

Exactly as described. Super easy installation guide on the app. It took me a minute to figure out the programming but the unit works as expected.

After Amazon Thermostat, this is totally different experience. Was surprised with quality and connectivity and simplicity of installation. I bouth 2, the full version and lite version, so far so goodWas using for about 3 weeks. Got notifications when door is open, I can set up limit on temperature, which is Incredibly useful for rental.

The Sensi Lite could be a simple little device, to fit the niche for those that don't need all the programming options of more expensive units, but that's not the case. We purchased this for our 2nd home. Our primary home has a more advanced unit from a better known smart thermostat vendor. It took a bit to get WiFi to connect on the Sensi Lite, but eventually it happened. All seemed well.However, this rural area tends to lose power a couple times a year. So, the batteries will die. When the batteries are replaced, the Lite doesn't seem to want to reconnect. The app appears to have an option to Reconnect, but it NEVER works. We always end up having to remove and add the device back.As others have stated, the problem is when you go to setup on the thermostat (by holding the one tiny magical touch area on the unit for four seconds), the app will seem to be connected, but it doesn't trigger the goofy scanning LED sequence on the Sensi Lite unit. The thermostat will then drop out of Setup. No errors, no help from the thermostat, and the app's scan simply times out.Do yourself a favor, get at basic unit from a better vendor. From my experience, I would avoid anything by Copeland (formerly Emerson Climate Technologies). This thermostat is simply frustrating.

Other companies that make these programable/wi fi thermostats, use downloaded apps that only work if you give them permission to (essentially) have access to your entire phone. This company does not. The thermostat works great and I wish I would have gotten one years ago.

The title of this review says it all, a shipping box that provides no installation information.How can a company release a product that lists an "Installation Guide" on its box and then ships the product without one.It says there's a mobile app for control, but does not give its name. Rufus doesn't know it. Claims it's a PDF.And he doesn't know if it mounts on the base of the white non-wifi thermostat one might be replacing. Shame on Emerson for not making it compatible and not documenting it isn't.By chance I read the Amazon reviews so I knew what to do, but that's not what a company should count on.

Works great easy install.

It does everything I want it to, and nothing that I don't want it to. The interfaces, both physically on the device, and in the phone app, are intuitive. It is not overly complicated to use like the Google Nest thermostats are.