ecobee SmartThermostat with Voice Control - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Smart Thermostat for Home

In my opinion this is a great thermostat. I chose the EcoBee because of the Smart Sensors. My house has a bunch of rooms with a central thermostat. As a result, the temperature between rooms would vary greatly. The sensors seemed like a solution to a problem that has bugged me for years.The thermostat uses the average of the temperatures reported by the sensors to determine when to cool or heat. Once the sensors were placed around the house, it took about a day for all of the rooms to get cooled down and settle into a stable climate through the whole house. Before the EcoBee there was as much as a 7-9 degree difference between the coolest rooms and the warmest rooms in my home. Now, there is a difference of only a couple of degrees between all of the rooms, as one would expect due to the averaging being used.When a sensor detects someone in a room, that sensor gets more weight in the temperature average while unoccupied rooms get less weight on the average. This means that cooling priority is given to occupied rooms.You can setup multiple "comfort settings" (e.g. Sleep, Home, Away) which define a set of desired heating and cooling temperatures, then create a schedule for when each comfort setting is used. You can also specify which sensors are active in each comfort setting.The iOS mobile app is easy to use and intuitive. You can control the thermostat while away from home in the app. The EcoBee supports GeoFencing so that you can have the termostat turn on when you enter a fence that you can define.You also can control the thermostat using HomeKit. The thermostat can be used in Scenes and Automations. With an 4th Gen+ Apple TV, an iPad, or Homepod you can use HomeKit to control the system while away.The thermostat needs a stable 2.4 Ghz wi-fi connection. If you have spotty wi-fi ensure that your thermostat location has good 2.4 Ghz signal. I have excellent wi-fi coverage in my home and the EcoBee has been rock solid with no drop outs or disconnects.The thermostat has features like minimum fan run time, manual adjustment and hold.Install is easy using the included instructions. Included in the box are labels to tag your thermostat wiresso you know what each one is for when you start connecting the EcoBee. There are some nuances to moving from an old thermostat to a modern thermostat (wires that you can abandon, jumpers that you don't need with new thermostats, etc) so I cannot emphasize enough how important it is to read and follow the included instructions.The sensor pairing process is easy. It does take some time for the sensor to pair sometimes, just be patient.Bottom line, my wife has said that she feels a difference and thinks that the whole house is more comfortable. She notices a difference in rooms that used to be warm or stuffy. The room sensors are the real winner with the EcoBee in my opinion. They make a huge difference. Highly recommend this thermostat.

So I have been turning my home slowly into a smart home over the past 3 years with smart switches, bulbs, plugs, locks and a Wink Hub 2 to help them all work together. I have avoided thermostat's because I was concerned about others in my house not knowing how to use them.I bought a Nest thermostat about a year ago and it just didn't operate the system I bought it for correctly, ever. I was always adjusting it up or down constantly; not really what you want to do if you are looking to save energy.So I looked at Ecobee. I have heard the problems with the Ecobee 3 working with Alexa or being sub-par in its Alexa integration so I held off. Then they came out with this "Smart Thermostat" with full Alexa integration, better speaker, etc., so I decided to try it.My house is large, I have 4010 square feet, 2 furnace/ac setups and 3 zones. I tried the Ecobee Smart Thermostat on the largest, single zone section of the house for a week. To say installation was a breeze is unacceptable; it was done within 30 minutes, including removing the old stat and installing the new one (10 mins), I had it configured to work with my newly installed app in another 10 minutes. Schedule was done in the last 10 minutes.Its very intuitive to use, simple on the main screen where anyone can simply look and see what it is set to, what the current room temp is and current humidity reading; that's it. If you want to change the temp its a simple slide bar on the right side of screen.While it is simple enough for anyone to change it has many features in the menu and app to let you drill into setting up the optimal schedule, limiting ranges that people can change the temp, as well as reviewing trends in your usage. Just an overall excellent product, well made and very thoughtful interface.I like it so much I bought 2 more for the other 2 zones which sit on the same furnace/ac unit and has a zone board with 2 electrically operated baffles, making these a bit more difficult to install. Also, one of these did not have a G or C-wire.I decided for these 2 additional stats I would go with the Ecobee 3 lite Pro since I wasn't worried about talking to it directly (yet they both still function through Alexa, allowing you to change their temps or get info from them through Alexa using one of my other Alexa devices in the house).I had to work with the Ecobee support team to figure out how to set these up correctly. The only thing I had to do special is make sure I wired up the G and C wires in the zone board at the appropriate terminals and then connect them to the stat as normal. This was made easier since the wires were actually there just not being used in the old stat or the zone board for some unknown reason.All in all, my house is now fully smart when it comes to the thermostats now and I am already noticing the temperatures are more consistent with the stat readings. I fully expect to start saving money with these things quickly. I am glad I went with Ecobee instead of Nest, including with all the recent talk about Nest moving away from Google Assistant (which I also have in the house).Hope this helps.

I chose this thermostat because it was recommended as the best smart thermostat on the market. The unit was easy to install and activate. Controlling the unit via the included App or Alexa is a breeze. One of the more useful features is the ability to set routines or to set a date range for vacations--both are money savers. The unit comes with easy-to-follow instructions and it has a remote sensor which connects automatically to the thermostat when you activate the unit. I installed one on the first floor and one on the second floor of my home to replace the old programmable thermostats that came with the house. As I installed the units, I discovered that my old upstairs thermostat had been installed incorrectly and that the wires were not connected properly. That could explain why it has always been difficult to regulate the temperature for our second floor.These units are a bit costly, but so far they are worth the money. Both are keeping the temperature regulated to within a degree or two of the range I've set and we have noticed that our HVAC unit is not cycling as much as it used to.If you are operating a smart home, I strongly recommend investing in this thermostat to complement your other tech tools.