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Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required

  • Based on 25,516 reviews
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Availability: Only 10 left in stock, order soon!
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Arrives Wednesday, Oct 7
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Size: 1 Pack


Style: Thermostat only


Configuration: Thermostat only


Features

  • Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
  • Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
  • Programmable thermostat and automatic control - Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
  • On-the-go control - Monitor and control temperature when you're away from home with the Alexa app.
  • Do-it-yourself installation - The Alexa app will guide you through the installation process, but customer service is always available.
  • Reliable - Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.
  • Create your Alexa+ home: With Alexa+, set routines using just your voice, control multiple devices at once, and chat casually to make requests.

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If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 7

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Top Amazon Reviews


  • Amazon Smart t-stat honest review
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
I’m a big Nest fan had it on my old house the problem that I have with them it’s the cost, and even with gas company great rebate didn’t justify the cost especially with my new home having a total of 5 thermostats (t-stat). I was excited when I found that Amazon partner with Honeywell to get this t-stat created as Honeywell has been creating t-stat for years which make me feel better when making the purchase. ---COST--- Now let go over the details for cost it’s good and I got two of them which at the end of the day will be free due to the electric company rebate for a smart t-stat. I didn’t get a C- adapter and I will explain later (INSTALL session) why I purchase a 24-volt transformer for my first-floor unit. ---INSTALL--- Love the package it reminds me of the NEST when it first starts came with everything that you needed the only additional tools, I need was a harmer, and drill but this is normal for these installations. Now the biggest question that everyone has is the C (common) wire. This is where you need to do your research regardless of what company you go with when upgrading to a smart thermostat, due your homework on what you need. For me I have a spill unit (boiler & A/C) first for my second-floor unit it was super easy I had an extra wire and I use it for Common the t-stat startup and finish within 30 min. Now for my first floor I utilize a 24-volt transformer because I didn’t have spare cables and I didn’t want to run a new cable which drove me to make the purchase again do your homework before and see what option best works for your use case. I connected the transformer to the C wire and the other end to Rc and that works like a champ. This is critical if you have a split unit since Honeywell power their t-stat via Rc only when you have two RED Wire (R (heater) and Rc(cooling)) and the blue tab (internal jumper is down position. If you only have one RED Wire you are fine just keep the blue tab up and your t-stat will turn on without any problems. I did reach out to Honeywell and explain to them they need to explain this on their site and white papers that when you have split units’ power for the t-stat will come from Rc and not from R this is critical because my house previous owner installed a switch to keep the A/C unit down through the winter to avoid accident turning on the unit which is great idea. Please keep in mind this is NOT an Amazon problem that is Honeywell they did acknowledge their mistake and agree to update their site and documentation. Running my transformer cable and installing the unit took me about 60 minutes because I wanted to look perfect with the transformer cable going through the wall this make the installation look cleaner. ----SETUP---- Once all wire were connected the setup of the t-stat was simply and when I say simple it was super didn’t have input the WiFi password or anything else since it automatic joined my account that was amazing and simply just like setting a fire table that was a great experience. Amazon did an amazing job doing this some users this my not be as good, but I look automation the less click I must do the less chances of mistake A+ ---LOOK--- The t-stat looks great after the final install the wall panel (included but optional for install) made it easier for me since I didn’t have to paint (if you had a different color paint I would recommend adjusting before completing the install but that is just me) ---Interface (GUI)---- For me the GUI is great for some it my but I’m one of those people that like to have one application on my phone or tablet rather than 2 and this is where Amazon did another amazing job. Please keep in mind that Google who purchase NEST is doing the same thing I see the NEST application going away in the future all new NEST is configure from Google Home and they also did a great job The GUI it’s simple and allows you to setup multiple schedules and copy them to different days or week. Huge plus on my book because for the NEST I had to do manually per day I can setup one day and copy to another. You can setup away and home schedule or utilize your current Amazon device to tell the t-stat that you are home or away. Another item that I love from the Amazon you can setup MAX cooling or heating this allows for mistake not to happen and getting your house too hot or cool really go option to have and you can set filter replacements without your assistance (optional) for me this is great no more remembering air filter as they will show up at my footsteps. Energy saving incentives can also be done via the application. The dashboard its great too it tells you how much energy you utilize each day and where you can save. Now the only downside for that I experience is only scheduling session on Android because it forces close my Alexa application all the time, I don’t have this problem with anything else on the application just the scheduling session. This option works perfect on my wife new iPhone and iPad pro and new Android phone. My old Android is the one with this problem, but I experience this kind of thing on and off since it’s an older device. -------Final judgment ---- The device is good option for a smart t-stat and would recommend for anyone some of the problems that were reported it was on day one which is expected with any new launch overall I see this t-stat giving Google (NEST) and others a run for their money as now you have a great option for smart t-stat and you don’t require to break your budget to acquire one. In addition, love the one application for everything as previously mentioned all big companies are doing this model to stop the install of some many other applications. In a scale from 0 -10 this t-stat gets a 9 please note that the NEST 3rd gen got a 9 from me. Hope this helps everyone make the correct decision and I will update this review in a few weeks to report back. ... show more
Reviewed in the United States on April 13, 2022 by funnytennisman

  • Works very well to configure the temperature for my place
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
Not a lot of instruction with the product but it works out. I don't know if the key/code actually works but the unit is smart enough to get it installed. It works with Alexa. The thermostat itself has limited options but I get around by using features in Alexa. Alexa is not very intuitive and has too many possibilities making it actually harder to use. ... show more
Reviewed in the United States on September 5, 2026 by mamahong

  • Good thermostat, but not ready for primetime yet (Updated)
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
UPDATE 12/27/21: After a month it would fail to turn on the outside unit of my heat pump, only the inside unit, despite audibly clicking twice, and the Alexa app would say "Delayed start", as if it were on a cooldown timer, which the unit was not. This would happen both on scheduled times of temperature change and when manually changing it. Turning the breaker off and on would resolve the issue for a few hours before it would reappear. I ordered a replacement unit thinking that was the problem, but it did the same thing. I put my old "dumb" digital thermostat, the Lux TX9100E, for which there is a newer version (Amazon ID B00CX2QA3Y), back on and I haven't had a problem since. Changed star rating to 1 and will say to avoid this thermostat, it's not worth potentially risking damage to your system, especially when all of the issues mentioned in my original review were not addressed before the much larger issue occurred. ----------------------------------------------------------- ORIGINAL REVIEW: This review pertains to the unit with Device Software Version 16843520 and Manufacturer Software Version 16844544. This is my first venture into a smart thermostat. I've wanted a Nest or one from Honeywell for a while, but their high price tags put me off. Enter the $60 Amazon Smart Thermostat. Installation was fairly easy, I say fairly because since the thermostat is small, the wiring can get cramped. The optional included backplate is quite large, which is a GOOD THING in my case as it easily covered several holes from previous thermostats. Connecting it to Alexa is also easy, just tell it to discover devices and it proceeds smoothly. There are a few negatives though. I waited 10 days to write this review hoping they would release an update that would fix them, but so far they have not. 1) It has issue reconnecting to the network after a power loss. I had to pull it off the wall (it clips on to the mounting bracket) and put it back on to get it to reconnect after a few seconds long power failure today due to storms. My router is connected to a battery backup so it never lost power. 2) The scheduling is very basic. You can only set 4 fixed temperature types (Work, Home, Away, Asleep) and assign them to certain times, and you can't adjust them differently. For example, you can't set 5AM and 5PM as "at home" and set the 5AM to 65°F and the 5PM one to 68°F, they both have to be the same. Also, as of this review anything you put in the Heat and Cool choices is changed by whatever you put in the Auto section, so it's only really possible to use it with Auto. 3) Voice commands don't work well, or at all. When you say "Alexa, what's the inside temperature", it will often say "Thermostat does not support this function" when it does, same goes with humidity. Also when you say "Alexa, raise the temperature by 2 degrees", it may not work correctly, the last time I did that I wanted to raise it from 66°F to 68°F and the air conditioning came on because it had set the temperature to 64°F. There are also functions which are unable to (yet) be controlled with voice commands, such as turning the fan from Auto to On or Circulate, you have to use the Alexa app to do it. 4) The display. Currently it will cycle between the Active and Inactive brightness at random, even when there is nobody and no sound in the room. 5) This is a critical bug. About half the time when the heat is engaged it will also use supplementary heat (I have an electric heat pump with electric aux heat), even if the temperature outside is above 50°F, and it is just coming on to maintain temperature and been raised multiple degrees manually. Disconnecting the W2 wire fixes this, but also disables auxiliary and supplemental heat completely. 6) There is no display for auxiliary heat in use on the thermostat nor in the Alexa app. Considering aux heat, especially on electric heat pumps, uses a large amount of energy, there should be some kind of display or, preferably, a popup notification. ... show more
Reviewed in the United States on December 7, 2021 by Matt

  • Good thermostat, but may not work well for your system/house
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
Overall, this is a good thermostat with a decent interface. My issue is that it doesn't learn like my previous (non-smart) Honeywell thermostat did. I live in an old house that has cast-iron hot water radiators. These radiators continue to heat long after the boiler has stopped running. Because of this, when I set the thermostat to recover from 64 degrees to 68 degrees, I will end up with a house that is 72 degrees. My old thermostat learned this, and learned to turn the boiler off before the desired temperature was achieved. To be completely honest, I have trouble finding fault with this thermostat due to the price. I really shouldn't have expected this type of performance from a cheap thermostat, but many of the reviews suggested that it did work this way. It does learn recovery time, and turn the heat on before the set time, so the desired temperature is achieved at the time it is desired, but it fails to realize that the house continues to get warmer after it turns the heat off. Once again, my problem is likely limited to certain heating systems. This thermostat may work great for you, and I suggest you look into it if you don't have cast-iron radiators. ... show more
Reviewed in the United States on October 25, 2025 by M. Cleveland

  • 2026 Amateur Electrician’s Review & Comparison to Google Nest Thermostat
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
The Alexa thermostat is the 4th thermostat I’ve had installed in my house – one with Forced air, gas furnace and a C-wire — including a basic thermostat, WiFi Honeywell , Google Nest and now Alexa Smart Thermostat. I learned a lot about HVAC wiring and thermostats , and realized Alexa is the best smart thermostat package right now because of it’s more traditional wiring & switching hardware ( for those using C-wire connection), high contrast & responsive display, broad smart home features and sleek fit & finish. For $80 you can’t go wrong. For those with or without Alexa, I believe it’s the best thermostat when you look at the clean fit & finish, convenient smart home / remote features & reliable , traditional wiring system. Google Nest uses creative circuitry to accommodate more wiring setups, which can affect longevity. Nearly all of the complaints from earlier reviews have been addressed, with the inclusion of multi-room temperature measurements, daily schedules, device sharing , reliability and more. In 2026, you can be confident this is a reliable and mature smart home device. Hardware Installation Hardware is very easy for any DIY’er. Use a piece of paper template and your fingernail to trace out the screw holes so you can mount and align placement on the wall. Mine was aligned next to a security keypad so I wanted the leveling to be perfect. It can be challenging to fit & bend all of the wires into the tiny terminal pocket , but once enclosed the wall installation is very clean. Smart Home Setup Software setup is easy, even when bypassing the QR code. I recommend skipping to the test phase and doing the complicated setup steps after you get accustomed to the device. Alexa app & setup has become very reliable and polished. I did the “hard” setup flow and it took about 2 minutes end to end to configure the WiFi, wiring, thermostat ranges and more. I recommend turning on fan circulate in any home less than 20 years old , which is usually required by code. That helps bring in 10% fresh air periodically. Support for CIRC / circulate on this thermostat allowed me to remove a legacy mechanical fan blower timer that had been unreliable . Fit & Finish Despite being a more humble build, I found the installation to be more preferable to my Google Nest. Alexa Thermostat is a simple matte white, with very clear , colored icons for Auto , cool, heat & fan-circulate. It’s very easy to read and the touch buttons are intuitive. Although Nest thermostat’s mirror finish is fancier, the UI is overly complex with counter intuitive swiping. Software Experience. The Alexa App UI can be a bit complex with many layers of settings, but once the device is setup with temperature ranges, fan setting, hunches and more – your primary experience is a virtual thermostat screen. It works well throughout and away from home. It’s especially convenient with other Alexa devices. Voice commands and queries via Alexa are trivial. It’s nice to change temps at night via whisper. Electrical Concerns Electrical connectivity & longevity is the most important advantage of the Alexa Thermostat. You can hear the traditional relays that click on and off in the thermostat, though they are more subtle than a budget device (I tested the sound before vs after). This design should last 10+ years compared to other smart thermostats, and maintain the life of your furnace/HVAC logic board. other smart devices “steal” power over the circuit , which generates heat and wear . 2026 Conclusion I held off due to some mixed reviews, but all of those issues have since been worked out. For the price, you won’t find a better feature set, and I’m expecting reliability to be very good at least on the HVAC wiring. ... show more
Reviewed in the United States on May 17, 2026 by Tony M.

  • Easy to install! Great price!!
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
100% recommend this thermostat. It comes with everything you need to install it. They even tell you from the beginning to check your current thermostat before making your purchase and from there it tells you all. Never in my life installed something like this and honestly was super easy, follow the instruction steps on the app, they are SUPER CLEAR! It even comes with stickers to label your wires! I wasn’t even aware it came with the mountain plate was about to purchase separately. If you’re looking for something nice looking and affordable this is the item to go for. Still figuring out how it works with the Alexa app but, so far it doesn’t look difficult, I am so pleased with my purchase. ... show more
Reviewed in the United States on August 27, 2026 by Talia L.

  • Great Features, But Too Much Cycling for Older Systems
Size: 2 Pack Style: Thermostat only Configuration: Thermostat only
Installation was easy, and it integrated nicely with my Ring app, which I really appreciated. I genuinely wanted to love this thermostat because it kept the house right at my set temperature and performed exactly as designed. However, the built-in 0.5° temperature swing caused my A/C to cycle on and off constantly. While the comfort level was excellent, that short cycling isn’t ideal for long-term system health—especially for an older HVAC system like mine. I tried working around this limitation using Alexa routines. For example, during the day I set it to trigger cooling from 75° down to 73°, and at night from 73° down to 71°. The issue was that if a trigger point wasn’t detected, the routine wouldn’t run. To compensate, I had to create additional routines just to force the A/C to turn on and hit those trigger points. While it’s technically doable, it relies heavily on cloud syncing and consistency between systems, which made it feel unreliable and overly complicated for something that should be simple. In the end, I switched to an Ecobee thermostat, where I can adjust the temperature swing to 1° or even 2°. This significantly reduced short cycling and should help preserve the life of my A/C. This thermostat may work well in a newer, well-insulated home or apartment, but for an older two-story house like mine, it just wasn’t the best fit. ... show more
Reviewed in the United States on June 16, 2026 by The Fontenots

  • Smart thermostat with Alexa
Size: 1 Pack Style: Thermostat only Configuration: Thermostat only
So useful and works well with Alexa as promised. Even for my first time installing a smart thermostat I felt confident. I used ChatGPT to show the wire diagram and it talked me through. ChatGPT even found this thermostat for me. Now my house is back being nice and cool. The thermostat temps can be adjusted with Alexa app on my phone so I can stay snuggled in my room. 😂 ... show more
Reviewed in the United States on September 3, 2026 by Author Tanishila Floyd

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