Best Smart Thermostat Reviews 2018

Today’s modern thermostats can do so much more than control the temperature in your home. While “smart thermostats” are relatively new, if you are building a home, replacing a malfunctioning thermostat, or simply considering an upgrade, they offer some really attractive features worth considering. Here are five of the top models we recommend taking a look at.
LCD Display
Voice Control
Mobile Access
Our Top Choice
Nest Learning Thermostat - 3rd Generation
More expensive than most but has more features and is one of the best. High quality and user-friendly.
Easy to view display w/ touch screen functionality Energy saving settings.
Doesn’t run on batteries – needs separate power source/hardwired. No remote temperature sensor to monitor rooms individually.
Wi-Fi w/ remote access
Large, round display
Works with Alexa
Yes, with the Nest app
Fast Installation
Best Value
Honeywell WiFi 9000 Wi-Fi Smart Thermostat
A smart thermostat that's easy to install, user-friendly and energy saving.
Easy to read screen info. Can be remotely or manually controlled. Energy saving certified.
Absence of Motion Sensors. Comments on how outside temp sometimes gets stuck on "waiting for update."
Wi-Fi enabled
Full color display
Works with Alexa
Yes, w/ Total Connect Comfort App
Energy Saving Extras
ecobee Smart Si Thermostat 2 - Heat-2 Cool
A smart thermostat that works just like its high-end competitors but at a fraction of the cost.
Affordable. Outdoor/indoor temperature display. Remote and/or manual temp change.
Absence of touch screen by design. Limitations to the times when you can schedule settings.
Wi-Fi enabled
Full color display
Not available
Yes, with Skyport Mobile App
Intuitive User Interface
Venstar WIFI ColorTouch Thermostat
A reliable smart thermostat with stylish customizable color screen and great interface at a great price.
Built-in Wi-Fi. Easy to use colored touch screen. Option to set air conditioning and heating limits for who can control functionality.
Tricky Wi-Fi connection reports.
Built In Wifi
Large Color Display
Works with Alexa
Yes, with ecobee app
4 State Heat 2 Stage Cooling
Emerson Sensi Wi-Fi Thermostat
All the power of a smart thermostat from a reliable brand - at a very affordable price.
Saves settings during power out. Can be remotely controlled. Easy to install and program.
Intermittent server reports. Voice command only works for Alexa at the moment.
Secure Wi-Fi Connection
Large Backlit display
Works with Alexa
Yes, with the Wink app
Custom 7 Day scheduling

(Updated )
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Watch Our Smart Thermostat Review

How Do I Choose the Best Smart Thermostat?

Before we start talking about the important things to look for in a smart thermostat, it’s probably important to make sure we are all on the same page. Just what exactly is a “smart thermostat” and is it the same thing as a “programmable thermostat?” Let’s start with the second question first – while all smart thermostats are programmable, not all programmable thermostats are smart. So maybe we should be asking this question – what’s the difference between a “dumb thermostat” and a smart one?

A basic thermostat will allow you to program the temperature settings for you home, minimally by time of day, but often by the day of the week as well but you need to be standing right at the device to make any changes. In contrast, a smart thermostat uses technology that let’s you monitor and make adjustments from other places. Some connect with other “smart technology” in your home to allow you to control it by voice in another room but that’s not all that they can do.

If you purchase a thermostat that is wi-fi compatible, they have applications that let you control your home environment when you are way from your pc or any mobile device – giving you even more flexibility and energy savings. Let’s say it’s the middle of winter and you normally get home at 6 pm. With a traditional programmable thermostat, you can set the temperature to go down when no one is home and have it turn on at 5:30 so it’s nice and warm when you get there. But what happens if a friend asks you to go out dinner and you don’t get home until 9? That’s 4 hours that your heating system is working at a higher temperature with an empty home.

As you can see, although they are more expensive, they can potentially bring you a lot back in energy savings. By the way, if you want to do a comparison, take a look at our review of the top 5 digital thermostats.
When looking at the price of a smart thermostat (or any thermostat for that matter) there are three factors to consider – the actual cost of the device, the cost to install (especially if you can’t do it yourself) and the effect that the specific model will have on your energy bills over time. If you get a more expensive model that has options to automatically control the temperature settings, it will mean more money up front but a good one will pay for itself in terms of how much it saves every year on electricity or gas costs.

The average price range for a good Wi-Fi compatible smart thermostat is from about $175 to $300 dollars. It is important to note that some of the less expensive thermostats frequently have less features and lower quality materials and construction.
In addition to all the features associated with controlling your temperature from the actual thermostat (which we will discus below), many smart thermostats are Wi-Fi compatible. This means that they have an app that can be used on your mobile phone, tablet or PC that lets you monitor and adjust the temperature settings in your house – from any room or any place around the world (as long as you have internet). But just like with any app – not all smart thermostats are created equal. Some to much more that let you control the temperature. For example, some will give you alerts when it notices that your HVAC system isn’t working properly.

Another feature that the more advanced smart thermostats offer is the ability to connect with other devices to give you a connected “smart home.” For example, there are many that connect with home control systems that are voice activated. Others will connect to smoke and carbon monoxide detectors – sending you alerts on your mobile device if there is a problem. Taking it even one step further, there are models that can be connected to home security systems and will “tell” it to turn on and off according to your home and away settings on the thermostat. For example, if you have the thermostat to turn down when you leave for work, it will let the camera know it’s time to go to work too.
Construction and Design
Not all thermostats are capable of monitoring both heating and cooling, but in the case of smart thermostats most do offer the ability to control both. However, you need to make sure that it works with the way that you heat and cool your home. Again, because of the advanced technology most work with a multiple HVAC systems including gas, electric and forced air. You will also need to make sure that the power supply is compatible – determine whether your system works on a low voltage or high voltage power source and make sure to get a thermostat that works with it.

Once you know that you have the right kind of thermostat, take a look at the actual construction and materials. Higher quality thermostats tend to cost more but that’s because they are more durable and are built to last.

Finally, when you go out shopping for a basic thermostat look is important, but the reality is you are pretty much getting a rectangular box that is stuck to the wall (or sometimes a round one). With smart thermostats there are so many more options. Many come with high resolution digital screens and there’s one on our short list that even let’s you customize the background display.
Performance and Ease of Use
For the purpose of this review, we are going to break performance and ease of use for smart home thermostats into three categories – installation, how well it really controls your temperature and how easy it is to use all the controls. We will put the information about the apps that work with the thermostat in the feature section.
  • Installation – If you are getting a basic thermostat, installation is usually pretty simple, especially if you are replacing another one. One factor that will GREATLY impact the installation of your new thermostat is the power source – does it need to be hardwired or can it operate by batteries? Even if it does need to connect to your electrical system, in many cases it’s something that most home owners can do – shut off the main power supply, connect the wiring appropriately according to the instructions and then install the included mounting system. Even if you need to hire a professional, it won’t cost a lot of money. In the case of smart thermostats, some do have easy installation but some with more advanced features may require professional help.
  • Temperature Control/Programmability – A good thermostat will accurately monitor the temperature in the room and adjust how hard (or little) your heating and cooling unit is working accordingly. By the way, when installing your thermostat, the location is important – if you aren’t sure where the best place is, consult a professional. All of the smart thermostats that we are recommending are programmable – but there are two kinds. User-programmable thermostats let you set temperature by time, and sometimes by day of the week. For example, can have different settings for week days when you go to work and weekends when you are home during the day. Self-programmable thermostats will gather information from sensors and will adjust the temperatures accordingly – they can even tell the season because 65 degrees in your house at winter time certainly “feels” different from 65 in the summer! Some can even monitor humidity.
  • User Interface – The easier it is for you to understand how all the options available on your device the better. Programming your settings shouldn’t be complicated. Many of today’s smart thermostats offer touch screen controls, that work just like your tablet or mobile device. Even if they aren’t touch controls, many offer easy to read attractive visual displays – some even tell you the temperature outside.

What is the Best Smart Thermostat?

Now that we understand exactly what a smart thermostat is and what to look for, let’s turn out attention 5 of the best smart home thermostats that are available on the market today. We have only chosen to only review models that are wi-fi compatible, because what’s the sense of getting a smart thermostat if it doesn’t do more than your old “dumb” one?
Our Top Choice
Currently the # 1 best seller on Amazon, the Learning Thermostat by Nest has been proven to help people save money on their energy bills. If you are looking to save some on purchase cost too, you can still find the 2nd Generation Nest Thermostat on Amazon.
Nest 3rd Generation Learning Thermostat – Programmable, WiFi App & Works with Amazon Alexa

Nest Learning Thermostat 3rd Gen - T3007ES

The Next Thermostat works with other products like the Nest Protect smoke and Co2 detector and Next Cam so you always know your house is safe, whether you are home or away. The 3rd Generation version has been a best seller on Amazon for great reasons. Check out some of its features and who knows, maybe this smart thermostat is exactly what you need for your home:
  • Auto-programs based on your previous temperature settings
  • Has energy saving indicator
  • Easy to install and set up
  • Temperature can be controlled using your smart devices
  • Auto-away feature adjusts temperature when you leave home
Construction and Design
There are many construction and design features that make the Learning Thermostat by Nest one of the best selling smart thermostats available on the market today. The 3rd generation model brings with it a larger 24-bid color LCD screen with 480x480 resolution. This enhanced resolution provides better visibility compared to the 2nd generation Nest, making it easily seen from across the room.

When totally assembled, the total weight of the Nest thermostat is 243.7g, with a diameter of 3.3in and a height of almost 1.21in. When compared with its 2nd Gen counterpart, the new Nest is bigger in overall size but slimmer where it counts. You have a choice of four languages for the user interface – English, Spanish, French and Dutch.

The Nest Learning Thermostat T3007ES comes with a rechargeable lithium ion battery.
Performance and Ease of Use
The introduction of Nest’s Farsight features has improved visibility so that the display can literally be seen from 30 feet across the room. When it comes to installation, that’s easy too – the system even comes with a screw driver and level to make wall mounting as simple as possible.

You can optimize the performance of the Nest Thermostat using its energy saving features. The display will even show a green leaf to let you know when you are choosing a temperature that minimizes energy usage. When you use the Auto Away feature, the system will adjust the temperature accordingly when no one is home – down when using the heat, and up when using the air conditioning. The smart features give you the ability to remotely make changes to the settings even if you are not at the actual thermostat – whether you are in another room, or miles and miles away – with your smartphone, mobile device or PC.

At the time of our research, the Smart Nest Learning Thermostat is quickly approaching 4,000 reviews on Amazon with an overall rating of 4.6. Of all the reviews that it has received, more than 83% rate it as a 5 star product. Thus, it is safe to say that customers are certainly happy with the Nest Thermostat. One thing that stands out when you take a look at the critical reviews is that very frequently there are responses directly from Nest Support. That’s something we don’t see very often.
Best Value
The Wi-Fi Smart Thermostat by Honeywell lets you control the temperature of your house from the touch screen – or from a pc or mobile device – whether you are at home or not. If you decide you want a basic, traditional non-programmable model, Honeywell has a digital thermostat that sells for about $28.
Honeywell Color Touchscreen Programmable Thermostat – App for Home & Away Monitoring

Honeywell WiFi 9000 RTH9580WF - Premier Silver

The Honeywell Wi-Fi Smart Thermostat is a sleeker version compared to old models from the same company. It features a personalized programmable mode which will help reduce your energy costs. It displays both temperature and humidity. Here's a summary of all the great features that the Honeywell WiFi 9000 Color Touchscreen Programmable Thermostat has to offer:
  • Comprehensive on-screen information
  • Ability to control temperature using your smart devices
  • Touchscreen allows users to manually control temperature
  • Customizable screen color to match your home paint
  • Has humidity sensor
Construction and Design
The home screen of the Honeywell Wi-Fi Smart Thermostat, a touch screen by the way, displays time and date, and outdoor and indoor temperature and humidity. It also has an up and down button on the screen that allows users to manually change the temperature. The screen color is customizable to match your home paint or décor - which is a plus for stylish homeowners.
Performance and Ease of Use
Aside from being well-designed, the Honeywell WiFi 9000 Programmable Thermostat's performance and usability make it stand out from its competitors. It has a simple screen and functions so much like a regular digital thermostat that learning to use it does not take time. And it's easy to set-up.

It allows for remote thermostat access using your tablet, computer, or smartphone using Honeywell's Total Connect Comfort Service app. Both iOS and Android devices can be used. You can even list all your Honeywell Wi-Fi Smart Thermostats in home home page and control each one of them even away from home.

It is a certified energy saving thermostat, so you are guaranteed to be able to stay on budget when it comes to your electric bill. Advanced password and locking options provide convenience and security. So you're sure that only designated users are able to access the thermostat.

The Honeywell Wi-Fi Touchscreen Thermostat has over 1, 800 customer reviews on Amazon. Overall, it has a 4.3 out of 5-star rating. There are critical reviews, with few commenting on how their Honeywell system would not work with their wirings and complain on how slow the system updates when connected to a Wi-Fi. While some complain about their experience with the company's customer service and not on the product itself.
The Smart Si Thermostat by ecobee is not only programmable to help you reduce energy costs, but with the built in Wi-Fi and App, you can adjust your settings from any mobile device – whether you are home or not. If you want even more advanced features, the ecobee3 Smarter Wi-Fi Thermostat has a remote sensor that can monitor more than one room.
ecobee Smart Si Thermostat – Programmable Wi-Fi Digital Thermostat with Full Color Display

ecobee EB SMARTSi 01

The ecobee Smart Si Thermostat 2 - Heat-2 Cool has a slim, minimalist design with an uncluttered screen. Adding to this, it has an easy to read high resolution display that gives you information about the temperature both inside and outside. Plus, when you are away you can monitor (and adjust) things at home from your mobile device.

To help you decide if the ECOBEE Smart Si Thermostat is what you're looking for, here’s an overview of its features:
  • Adjust thermostat from anywhere with internet connection using your smart device
  • Customizable service reports, scheduling and alerts
  • Easy to create temperature schedule for when you're sleeping or out of the house
  • Built in live weather function to save the most energy possible
  • Wi-Fi enabled
Construction and Design
The ecobee Smart Si Thermostat 2 weighs about a pound with L 7.38in x W 4.63in x H 2.50in dimensions. Many homeowners opt for this ecobee thermostat's understated look than shiny, “fancy” ones. The screen has an easy to use interface with high resolution and vivid color that displays outdoor and indoor temperatures.

Despite its simple interface though, it does offer many features. This smart thermostat is Wi-Fi enabled and built-in weather functions. And can work with or without a C-wire.
Performance and Ease of Use
Being a smart thermostat that's not touch screen does not affect the overall efficiency of the Smart Si Thermostat from ecobee. With the buttons at the right-hand side of the screen, one can still do the usual thermostat stuff and adjust everything manually. Moreover, it is Wi-Fi enabled and energy saving, and provides owners full control over their home's air conditioning and heating systems from any place with an internet connection. It also has a free downloadable app for both Android and iOS devices.

Users can effortlessly set and adjust energy saving programs according to their schedules. It's also capable of generating email alerts when something is somewhat not right with the system or if maintenance is required. It even produces reports via the web portal/app showing usage patterns, humidity levels, and outdoor and indoor temp comparisons. So if you're looking for a smart thermostat that's easy to use without spending hundreds of dollars, the ecobee Smart Si Thermostat is a great choice.

The ecobee Smart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen has about 200 customer reviews on Amazon. It has an average 4.5 out of 5-star rating. There are some critical reviews that mostly give feedback on the manufacturer's web portal system and customer service experience and not much about the product itself.
The ColorTouch Thermostat by Venstar is a programmable digital thermostat with a customizable touch screen. Plus it’s wi-fi compatible with your mobile devices. Venstar also makes models with humidity control.
Venstar WIFI ColorTouch High Resolution Color Thermostat w/ Customizeable Touch Screen

Venstar T7850 Colortouch (Replaces T5900 and Acc0454)

The Venstar WIFI ColorTouch Thermostat is built with a high resolution colored touch screen, as the product name suggests. One thing that sets this thermostat apart from others is that with the Venstar ColorTouch your thermostat will be a focal point rather than just a square box on the wall. It offers interchangeable faceplates, customizable wallpapers and themes. You can even use your own pictures as the background.

Here's a rundown of the Venstar WIFI ColorTouch High Resolution Color Thermostat other great, user-friendly features:
  • 4 heating and 2 cooling stages
  • Remote or manual thermostat adjustments possible
  • Built-in WiFi
  • Built-in SD card slot
  • Energy efficient according to Title 24 standards
  • Option to customize screensaver and wallpaper
  • >Dual-fuel capable
Construction and Design
The Venstar WIFI ColorTouch Thermostat has a width of 5.5 inches with a height of almost 4 inches. You can even customize the thermostat's screen wallpaper and background from pre-installed themes to showcasing your own pictures. The screen displays the room temperature, up and down buttons so you can manually adjust temperature and a drop down where you can see the weather forecast.

This smart thermostat has a built-in Wi-Fi, with remote accessibility with your mobile device or PC from anywhere in the world. The ColorTouch is available in 3 different modes for residential and 3 for commercial – each with a different set of features (building on those that are offered in the prior version) so you are sure to find one to suit your tastes and temperature control needs. We have chosen to feature the ColorTouch T7850 mid range home thermostat, but for your reference, here are the model numbers, in order of the variety of features offered:
  • Basic Version - ColorTouch T7800 (Residential) and ColorTouch T8800 (Commercial)
  • Mid-Range Version - ColorTouch T7850 (Residential) and ColorTouch T8850 (Commercial)
  • Advanced Version - ColorTouch T7900 (Residential) and ColorTouch T8900 (Commercial)
Performance and Ease of Use
The color touch screen that's customizable is just one of the favorite elements of the Venstar ColorTouch. The screen options are very easy to use. It supports up to two cooling and four heating stages, setpoint limiting and a programmable fan. It works electric, gas and/or heat pumps and is dual-fuel capable. And it is guaranteed to follow energy efficiency standards. Users also have the ability to secure their thermostat's functions and current settings with a password.

The Wi-Fi thermostat allows for smart device users to access and manage multiple thermostats through the Venstar app. And according to the company, the Colortouch Thermostat is generally compatible with every type of air conditioning and heating systems on the market.

Scheduling is one area where Venstar has probably taken the lead as compared to many other digital thermostates. It offers a 365 day scheduling which also takes into account those parts of the year where you would go on a holiday or a vacation. And of course, any settings can be adjusted remotely with the Smart Home features, for example if there is a drastic change in the weather while you are away, or you decide to come home early.

It also has a built-in SD card which makes it easy for users to transfer setting from one Colortouch device to the next. This is also where users can save custom images for their thermostat's wallpaper and background.

This smart thermostat has over 70 customer reviews on Amazon, with a 4.1 out of 5-star rating. Some critical comments mentioned how people needed to restart the unit every time they update Wi-Fi setting while some felt that the temperature sensor is too sensitive and sometimes found it erratic.
Sensi™ Wi-Fi Programmable Thermostat by Emerson not only will help you control the temperature of your home and lower your energy bills, but because it is Wi-Fi compatible you can monitor and make adjustments from anywhere. If you aren’t ready to step into the “connected world of the future” Emerson makes a great non-wifi programmable thermostat.
Sensi Wi-Fi Programmable Thermostat for Smart Home - Works with Alexa/Amazon Echo

Sensi Wi-Fi Pro Version 1F86U-42WF

The Emerson Sensi Wi-Fi Thermostat has a very simple design and looks more like the traditional thermostats that is surely to match most homes. If you're looking for a no-frills smart thermostat at half the price, the Sensi Wi-Fi Programmable Thermostat may just be what you're looking for.

Here’s an overview of its great features:
  • Control cooling and heating manually or remotely (Wi-Fi connected) via your smart devices
  • Compatible with most heating systems and can work with existing wirings
  • Built-in Wi-Fi
  • Works also with a voice control system through the Amazon cloud-based voice service, Alexa
  • Program/Settings retention through power loss
Construction and Design
With the Sensi Wi-Fi Pro, Emerson is proud to offer one of the first thermostats to work directly with Amazon Echo for a truly connected, smart home. With this connection, you can control your Sensi thermostat with the sound of your voice.

The screen displays the current room temperature and provides the temperature that you want to set it into. Temperature can be set manually or remotely using the Sensi mobile app. It requires 2 AA batteries that come with the purchase.
Performance and Ease of Use
The Sensi Wi-Fi Programmable Thermostat for Smart Home is very easy to install and does not require a C-wire for most applications. It is easy to install and can be immediately connected to your Wi-Fi upon installation or later on using the free Sensi app.

Set, schedule and change home temperatures from anywhere you are with your iOS or Android device. It even works with a voice command via the Amazon Echo's Alexa, while also working great as a standard thermostat without Wi-Fi.

This easy to use smart thermostat from Emerson has more than 1, 500 customer reviews on Amazon. It has a 4.4 out of 5 stars review. There are some critical reviews about how the device would not connect/sync to their Wi-Fi and that the Sensi server was intermittent. Though overall, the Sensi Wi-Fi Thermostat has great feedback.

Get the Best Smart Thermostat of 2018!

If you are ready to take a step into the future by making your house or apartment a smart home, these are 5 smart thermostats that we can highly recommend.

Our Top Choice
Nest Learning Thermostat - 3rd Generation
Best Value
Honeywell WiFi 9000 Wi-Fi Smart Thermostat
ecobee Smart Si Thermostat 2 - Heat-2 Cool
Venstar WIFI ColorTouch Thermostat
Emerson Sensi Wi-Fi Thermostat