I bought two of these units so when I bought them I realized it required a C wire not so much. I called tech support they told me that if you don't have a C wire they can walk me through how to rearrange my thermostat wires on my furnace they gave me easy to do instructions and Bam I have a wireless thermostat two of them with the techniques followed from their tech support. I called an electrician to install a C wire some time ago. They wanted a fortune cuz of going through the wall and nonsense like that these two simple units save me a buttload of money. The application I use for Lux it's very simple to use I'm able to control it from work or wherever I love it. Thank You LUX and tech support.

I like that this thermostat offers WIFI control in a package that is traditional and familiar, but also clean and modern. My biggest issue is that some of the settings and features are not covered well in the included documentation. Pros - WIFI connection and control via app work well - Basic functions and controls are intuitive and work well - Large backlit display - Setting up and managing a basic schedule from the app was no issue - Usage data available via app is useful for comparing run time and temperature settings - Offers app based geofencing for location aware home and away modes - Connected to Alexa with no issue - voice control works for changing temperature, but is limited (tip: you have to enable the Lux Products skill to allow Alexa to find your thermostat) - Installation was straight forward and a small screw driver to tighten the terminal wires is included (make sure you turn off the power and label the wires or take a picture before removing your old thermostat) Things to Consider - No battery option - you must have a C-wire or purchase a separate power kit - Two features I found really useful in my old thermostat are missing: no humidity sensor and no service reminders based on run time (the only reminder available is for the air filter based on days) - No touch screen and only 3 physical buttons means a lot of clicking to change some settings locally - Some features are not well documented, requiring a visit to the FAQ or a bit of internet searching (see below) - Auto heat/cool mode only works properly when running a schedule, it blocks temperature changes from the app with no warning that this command is not available (you must switch modes first via the app then change the temp), temperature changes at the thermostat cause strange behavior in Auto (the heat and A/C constanly toggle) until you return to the schedule - again no warning, it has no awarness of outside temperature and it is recommended not to use it if it is colder than 50F outside to prevent A/C damage. - Many settings (reminders, calibration, heat/cool temperature limits, run time delay, temperature swing, display) cannot be changed via the app and are a bit cryptic due to the limited display/instructions. The basic functions of this thermostat work well and are easy to use. I did have a few minor issues, but it offers a lot of value and is a good choice if you like the design.

---- Summary ---- Pros: - Simple to install - Universally compatible with different systems - Really does help save energy/money - Voice controllable with Google Assistant or Amazon Alexa - Can know when you’re home/away and adjust accordingly - Controllable from anywhere via mobile app - Alerts for filter changes and dangerous temperature warnings - Customizable temperature scheduling Cons: - Design seems outdated compared to others on market - Lightweight plastic and loud clicking buttons make it feel cheap - Mobile app is very basic, not elegantly designed ---- Review ---- Installation: Included in the box are the thermostat, power wire (for installation without a C-wire), mounting screws, wall anchors, wire labels, wall plate, and mini screwdriver. This was my first time installing a thermostat, and I was pleasantly surprised by how easy the process was. After turning off the circuit breaker to my heating/cooling system, I removed the faceplate from my existing thermostat, labeled the wires with the cleverly included wire labels, and removed it from the wall. After that, I attached the LUX thermostat’s base to the wall and the wires to their matching terminals then snapped the thermostat to its base and proceeded with the setup process. My system has a C-wire, so I can’t speak to the installation process using the power wire, which looks a little more complex. Nonetheless, you don’t have to have a C-wire to install this LUX thermostat. The part that took me the longest was drilling holes and covering up the previous ones because I preferred not to use the included wall plate that’s quite large. Depending on the size difference between your existing thermostat and the LUX thermostat, and whether you prefer to use the wall plate or not, the time it takes to install will vary, but I like that there are just a few steps clearly defined in the installation manual. I didn’t experience any hiccups during installation. Design: I’m disappointed with the design and quality of this LUX smart thermostat. Put simply, it looks and feels cheap, which is not what I’d expect from a smart thermostat. The pictures look nice online, but it gives off a different vibe in person. Even something as simple as the buttons are offputting to me due to a loud click noise upon pressing them. Though it’s on the low end of the smart thermostat price range, there are similarly priced ones with better build quality and a modern look. This thermostat looks outdated and seems to be mostly made of lightweight plastic. Though a thermostat doesn’t need to durable or be a beautiful art piece on your wall, it just seems that there wasn’t much thought put into the design of this LUX thermostat, and that’s a shame because the features of it contend with alternatives on the market. Features & Mobile App: Where this LUX thermostat stacks up with the competition is features. I like the “geofencing” feature that switches the system to energy-saving mode when you’re not home and the ability to set temperature schedules in the mobile app. Both of these features help save energy and money. Additionally, I appreciate the ability to change the temperature from anywhere via the app, as well as the Amazon Alexa and Google Assistant support. These add convenience to changing the temperature. In my case, I use Google Assistant and it works great. Alerts are a feature I haven’t tested (and hopefully will never have to), but having alerts gives me peace of mind because they can warn you of dangerous freezing or heat conditions. Filter change reminders are a nice feature to have as well. When it comes to features, there’s really not much more I could ask for in a smart thermostat. However, like the thermostat’s design, the app could use some work. It was pretty easy to set up, and I haven’t experienced any glitches, but it’s very basic and not an elegant user interface. That aside, I think this LUX thermostat provides plenty of helpful features that add convenience to my life and help me save energy. Verdict: I really wanted to like this thermostat more than I do. It has all the features I look for in a smart thermostat, like scheduling, controlling from anywhere, Google Assistant and Amazon Alexa support, and home/away awareness. Additionally, I was relieved to find that the installation process was simple. What makes this thermostat difficult to recommend is the lackluster design. If it’s appealing to you, I’d say this is a good smart thermostat that’s worth your consideration. I understand that design preferences vary from person to person. I just think some of the other similarly priced smart thermostats on the market have the same features but much more premium, modern looks. With that in mind, I can only give this thermostat a three-star, “average” rating.

Bought this on clearance and for the money spent it is well worth it. Nothing Super Fancy about it but it works as its intended to and i works perfectly with the Amazon Alexa App which was the mail reason why i purchased this Lux Smart Thermostat. I can be at work which is 38 miles away and while using the Alexa App i can check the current temp on the Thermostat and adjust it to what temp i want just by asking Alexa.

Have been looking for a thermostat with the swing feature built in. They are very hard to find with all of the smart devices on the market now. Had installed this device in less then 10 minutes. Very pleased with all that it does, and saves me money on my energy bill. All the same features as the more expensive ones.