8 Best Cnet Best Smart Thermostats in 2026

Contents
  1. The Top 8
  2. Top 8 Smart Thermostats Reviewed in Detail
  3. 1. Top Pick
  4. 2. Best for Daily Use
  5. 3. Runner-Up
  6. 4. Best Premium
  7. 5. Best for Small Spaces
  8. 6. Best Budget
  9. 7. Best Compact
  10. 8. Most Versatile
  11. Smart Thermostats Compared Side by Side
  12. How We Reviewed
  13. How to Choose Smart Thermostats
  14. What to look for
  15. Frequently asked questions

The cnet best smart thermostat decision can be tough. The Amazon Smart Thermostat is our top pick because it works with Alexa and Ring, making it easy to control. For a solid value choice, the Sensi Lite Smart Thermostat offers simple installation at the cost of some advanced features.

Most buyers will face the choice between smart features and easy installation. This page will guide you through key specs and details to help you decide which smart thermostat is right for your home.

Paid links. We earn a commission from qualifying purchases at no extra cost to you. Prices are pulled live from Amazon and change often. How this works

The Top 8

1
Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required
Amazon Smart Thermostat, Save money and energy, Works with Alexa and Ring, C-wire required
Amazon.com
2
ecobee Smart Thermostat Essential - WiFi Thermostat, Energy Star Certified
ecobee Smart Thermostat Essential – WiFi Thermostat, Energy Star Certified
Amazon.com
3
Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Snow
Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Snow
Amazon.com
4
Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25
Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25
Amazon.com
5
Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Charcoal
Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Charcoal
Amazon.com
6
Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55
Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55
Amazon.com
7
Honeywell Home T5 Smart Wi-Fi Thermostat
Honeywell Home T5 Smart Wi-Fi Thermostat
Amazon.com
8
Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required (Pack of 2)
Amazon Smart Thermostat – Save money and energy – Works with Alexa and Ring – C-wire required (Pack of 2)
Amazon.com

Top 8 Smart Thermostats Reviewed in Detail

Here are our detailed reviews of the best smart thermostats available today.

1. Top Pick

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

$56.99 $79.99
in stock
Limited time deal
Amazon.com
  • An Alexa thermostat – Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
  • 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 money and energy – After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
  • 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.
Updated: 17 hours ago

The Amazon Smart Thermostat is a practical choice for anyone looking to upgrade their home. It connects smooth with Alexa and Ring devices, allowing for voice control and smart home integration. You can create comfort zones by using temperature readings and presence detection with other Alexa devices. Compared to other models, it excels in user-friendliness and energy savings.

When you compare the Amazon Smart Thermostat to the ecobee Smart Thermostat Essential, you’ll notice that both offer energy-saving benefits. However, the ecobee model provides more advanced scheduling features. This is an advantage if you want more control over your energy use. Despite this, the Amazon model is easier to install and use for beginners.

The main limitation is the requirement for a common wire (C-wire). This can be a drawback if you don’t have one installed in your home. In such cases, alternative models that don’t need a C-wire may be better for you.

Pros

  • Works with Alexa and Ring devices for easy control
  • Creates comfort zones using temperature readings
  • Reduces energy usage compared to traditional thermostats

Cons

  • Requires a common wire (C-wire) for installation
  • Limited smart features compared to some competitors
  • Not compatible with all HVAC systems

Best for: Users who want easy integration with Alexa. Not ideal for: Homes without a common wire.

A user-friendly choice for integrating voice control into your home.

2. Best for Daily Use

ecobee Smart Thermostat Essential – WiFi Thermostat, Energy Star Certified

$139.00
in stock
Amazon.com
  • Save up to 23% every year on heating and cooling costs, adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Compared to a hold of 72
  • Compatible with 85% of systems, check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
  • Change your temperature by easily tapping the color touchscreen or using the ecobee app. Plus, free software upgrades ensure you get the best out of your Smart Thermostat Essential, for years to come
  • Automatically adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Keep track of your energy consumption when you’re on the go on the ecobee app
  • Easy DIY install. No C Wire, no problem. Get the ecobee Power Extender Kit (PEK) for homes without a C-Wire and keep your walls looking nice with our trim kit – both sold separately
  • Works with leading smart home ecosystems. Pair Smart Thermostat Essential with Apple HomeKit, Google Assistant, and Alexa
  • Works with most 24 VAC HVAC equipment: Gas, oil, electric, dual fuel, forced air Conventional (2H/1C or 1H/2C) Heat Pump (2H/1C) Boilers. You can check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
  • Add in a SmartSensor which allows you to measure the temperature in rooms that matter most. It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor 2 pack sold separately)
  • Built in eco+ Smart Features: Indoor humidity detection, schedule assistant, time of use which preheats or precools your home when energy is less expensive to reduce energy use during peak hours
  • Check your system’s compatibility on the ecobee support page. ecobee.com/compatibility/thermostat
Updated: 17 hours ago

The ecobee Smart Thermostat Essential is designed to help you save energy and maintain comfort. It can save up to 23% on heating and cooling costs. This model automatically adjusts to your schedule, optimizing energy use when you are away and enhancing comfort when you are home. Compared to the Amazon Smart Thermostat, it offers more advanced scheduling features. This makes it appealing for homeowners who want greater control over their heating and cooling.

The ecobee model is compatible with 85% of HVAC systems. This increases its versatility compared to other models. However, its installation may be more complex, which can deter those looking for a simple setup.

One limitation is its higher price compared to entry-level options. If you are on a tight budget, this model may not be the best fit. It caters better to users who want to invest in energy savings and advanced features.

Pros

  • Energy Star certified for efficiency
  • Adjusts to your schedule for savings
  • Compatible with 85% of HVAC systems

Cons

  • May have a more complex installation process
  • Higher price point than basic models
  • Not the best choice for very basic setups

Best for: Users who want advanced scheduling options. Not ideal for: Those on a tight budget.

A great choice for users who prefer energy efficiency and smart features.

3. Runner-Up

Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Snow

$117.40 $129.99
in stock
Amazon.com
  • ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page.Connectivity Protocol : ‎Wi-Fi.Connectivity Protocol : ‎Wi-Fi
  • The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory. Lock feature: No
  • Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program an energy efficient schedule in the Google home app on your Android or iPhone
  • Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
  • Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
  • Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
  • Control Nest Thermostat with Google Home and other smart home platforms. Compatible with Google Assistant and all Matter-certified voice assistants. Voice control requires a compatible smart device.
  • Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3]
  • Nest Renew makes it simple to support clean energy right from home; it works with your Nest Thermostat[5] to help you automatically prioritize your usage[6] to times when energy is cleaner or less expensive
Updated: 17 hours ago

The Google Nest Thermostat offers a sleek design and smart capabilities for enhanced energy savings. It is ENERGY STAR certified, ensuring you will save on your utility bills. Its user-friendly interface makes it easy to program and adjust settings. Compared to the ecobee Smart Thermostat Essential, it has a similar energy-saving focus but may lack some advanced features like remote sensors.

While the Nest Thermostat is great for those who want an easy-to-use smart thermostat, it may not be as compatible with all HVAC systems. This is an important consideration if your system is older or unique. You can check compatibility with the online tools provided by Google.

One limitation is the lack of a built-in sensor for detecting home occupancy. Without this feature, it may not optimize energy savings as effectively as some other models. If you want a more complete smart thermostat experience, consider other options that include additional sensors.

Pros

  • User-friendly setup and programming
  • Sleek design fits well in any home
  • ENERGY STAR certified for energy savings

Cons

  • May not be compatible with all HVAC systems
  • Lacks built-in occupancy sensors
  • Fewer advanced features compared to competitors

Best for: Users looking for a stylish and easy-to-use smart thermostat. Not ideal for: Homes with older or unique HVAC systems.

An attractive option for those who prefer simplicity and energy savings.

4. Best Premium

Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25

$64.00
in stock
Amazon.com
  • EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
  • COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
  • SAVE ABOUT 23% ON HVAC ENERGY: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
  • PRIVACY PROTECTION: Sensi won’t sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
  • CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet
Updated: 17 hours ago

The Sensi Lite Smart Thermostat offers an easy installation process and solid energy savings. It is designed for do-it-yourself enthusiasts, making it ideal for beginners. The built-in level and step-by-step instructions make setup quick and hassle-free. Compared to other models, it is more straightforward to install. However, it may not have as many smart features as pricier options.

This thermostat is compatible with most HVAC systems, which increases its appeal. It allows users to easily switch from conventional thermostats without much technical knowledge. Despite its ease of use, it lacks advanced learning capabilities that some other models offer.

One limitation is that it requires a common wire (C-wire) for heat pump setups. For homes without this wire, it may not be the best fit. This could limit its appeal for users with older heating systems.

Pros

  • Easy DIY installation with built-in level
  • Compatible with most HVAC systems
  • Energy Star certified for savings

Cons

  • Requires a common wire for some systems
  • Fewer smart features than higher-end models
  • Not suitable for homes without a C-wire

Best for: DIY enthusiasts looking for an easy install. Not ideal for: Homes without a C-wire.

A straightforward choice for those new to smart thermostats.

5. Best for Small Spaces

Google Nest Thermostat – Smart Thermostat for Home – Programmable Wifi Thermostat – Charcoal

$117.49 $129.99
in stock
Amazon.com
  • ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi – 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
  • The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
  • Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
  • Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
  • Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
  • Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
  • Smart thermostat with HVAC monitoring, which looks out for your heating and cooling systems; sends an alert if something doesn’t seem right, along with helpful reminders to make maintenance easier[2]
  • Control Nest Thermostat with Google Home and other smart home platforms. Compatible with Google Assistant and all Matter-certified voice assistants. Voice control requires a compatible smart device.
  • Connectivity : Wi-Fi – 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy
  • Please refer to the product description section below for all applicable legal disclaimers
Updated: 17 hours ago

The Google Nest Thermostat (Charcoal) offers similar features to its sibling model in a different color. Its design is sleek, making it appealing for modern homes. It is also ENERGY STAR certified, helping users save on energy costs. Compared to the Amazon Smart Thermostat, this model has more aesthetic appeal. However, it is limited in advanced features.

While it provides essential smart capabilities, it lacks certain functionalities like voice control through Alexa. Many users might find it less versatile compared to other options. The compatibility check feature is still beneficial, allowing potential buyers to confirm if it works with their systems.

One downside is that the lack of built-in sensors may limit its ability to optimize energy savings. If you are looking for more interactive capabilities, consider alternatives with additional features or sensors.

Pros

  • Modern design complements home decor
  • ENERGY STAR certified for efficiency
  • Basic smart features for convenience

Cons

  • Fewer smart features than competitors
  • No voice control with Alexa
  • Limited interactive functionality

Best for: Users looking for a stylish option in smart thermostats. Not ideal for: Those who want advanced features.

A stylish option for users prioritizing design and energy savings.

6. Best Budget

Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55

$103.49 $129.99
in stock
Amazon.com
  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most homes. Common wire (c-wire) is not required in most applications
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
  • SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch and paint your walls
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement
Updated: 17 hours ago

The Sensi Smart Thermostat offers great value for budget-conscious buyers. It is designed for easy installation and everyday use. This model includes a user-friendly app that provides quick access to settings and schedules. Compared to higher-end models, it has the advantage of affordability without sacrificing essential features.

This thermostat is also ENERGY STAR certified, which means it helps save on energy costs. Many users appreciate its compatibility with various HVAC systems, making it accessible for most households. However, it may lack some advanced features like remote sensors that can help optimize heating and cooling.

One limitation is that it does not support voice control, which could be a drawback for some users. If you prefer a fully integrated smart home system, consider models that offer this feature to maximize convenience.

Pros

  • Affordable smart thermostat option
  • User-friendly app for easy control
  • ENERGY STAR certified for energy savings

Cons

  • No voice control support
  • Fewer advanced features than pricier models
  • Limited compatibility with older systems

Best for: Budget-conscious buyers wanting smart features. Not ideal for: Users who want advanced capabilities.

A reliable choice for those on a budget.

7. Best Compact

Honeywell Home T5 Smart Wi-Fi Thermostat

$77.25 $109.99
in stock
Amazon.com
  • High use of the scheduling feature of the T5 thermostat saved customers between 8 and 16% on heating and cooling bills. Dollar savings range based on nationwide average annual single-family detached home’s heat and cooling bills; actual savings varies based on consumption.
  • Save Energy and Get Rewarded. Check with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility’s “DEMAND RESPONSE PROGRAM” which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.
  • 7-Day Flexible Scheduling or Location Based Temperature Control. It’s your choice. 7-day scheduling programs your thermostat. Geofence technology helps make you comfortable by using your smartphone’s location to know when you’re away and when you return.
  • Auto Home and Away Mode. Enjoy ideal temperatures at home, then save when away.
  • ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.
  • C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.
  • Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.
  • The T5 thermostat is ENERGY STAR certified and you can program it based on your schedule, or let it adapt to your life as plans change
Updated: 17 hours ago

The Honeywell Home T5 Smart Wi-Fi Thermostat is designed for users who want a balance of features and ease of use. This model offers a scheduling feature that can save customers between 8 and 16% on heating and cooling bills. Compared to the Sensi Lite Smart Thermostat, it provides more interactive features but may require a more complex installation.

It is compatible with most HVAC systems and can be controlled via a mobile app, adding convenience. Many users appreciate its sleek design and reliable performance. However, it may not have the same energy-saving capabilities as some of the other models on this list.

One limitation is that the installation can be tricky for beginners. Users who prefer a straightforward setup may want to consider simpler models. Those willing to invest a bit more time might find this model beneficial.

Pros

  • Scheduling feature helps save on bills
  • Compatible with most HVAC systems
  • Mobile app for remote control

Cons

  • Installation might be complex for beginners
  • Less energy-saving focus than competitors
  • May not suit homes with unique systems

Best for: Users wanting a balance of features and cost. Not ideal for: Beginners uncomfortable with installation.

A solid choice for users valuing scheduling features.

8. Most Versatile

Amazon Smart Thermostat – Save money and energy – Works with Alexa and Ring – C-wire required (Pack of 2)

$109.99 $159.98
in stock
Limited time deal
Amazon.com
  • The information below is per-pack only
  • An Alexa thermostat – Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
  • 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 money and energy – After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
  • Save energy – According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 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.
Updated: 17 hours ago

The Amazon Smart Thermostat (Pack of 2) offers a convenient solution for those looking to equip multiple rooms. This model retains the same features as the single unit, allowing for energy savings and Alexa integration. It’s perfect for homes where two thermostats are needed for different areas. Compared to the Sensi Smart Thermostat, it offers better value when outfitting multiple rooms.

This pack makes it easy to create comfort zones throughout your home. By integrating with Alexa devices, it automatically adjusts settings based on temperature and presence. However, the requirement for a common wire (C-wire) limits its installation options.

One downside is that buying in packs may not suit everyone. If you only need one thermostat, this option may feel excessive. For those looking for two units, however, it represents a great value.

Pros

  • Pack of two units for multiple rooms
  • Integrates with Alexa for voice control
  • Helps maintain comfort zones easily

Cons

  • Requires a common wire for installation
  • Buying in packs may not suit everyone
  • Limited advanced features compared to some models

Best for: Homes needing multiple thermostats. Not ideal for: Users who only need one unit.

A versatile choice for those outfitting multiple rooms.

Smart Thermostats Compared Side by Side

The following table compares key features of the cnet best smart thermostat picks. The columns show brand, model, and specific capabilities. Look at the rows that matter most to your home setup.

# Product Best for Brand Price Link
1 Amazon Smart Thermostat Top Pick Amazon $56.99 Check
2 ecobee Smart Thermostat Essential Best for Daily Use ecobee $139 Check
3 Google Nest Thermostat Runner-Up Google $117.4 Check
4 Sensi Lite Smart Thermostat Best Premium Copeland $64 Check
5 Google Nest Thermostat Best for Small Spaces Google $117.49 Check
6 Sensi Smart Thermostat Best Budget Copeland $103.49 Check
7 Honeywell Home T5 Smart Wi-Fi Thermostat Best Compact Honeywell Home $77.25 Check
8 Amazon Smart Thermostat Most Versatile Amazon $109.99 Check
9 ecobee Smart Thermostat Premium — ecobee $259.99 Check

Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.

How We Reviewed

Where our data comes from

We gathered data from reputable sources in the smart home technology field. These include expert reviews, user feedback, and product specifications from manufacturers. Data was collected from over 20 different products in the smart thermostat category.

How we built this shortlist

This shortlist was created by evaluating features that matter most in smart thermostats. We prioritized energy efficiency, compatibility, and user-friendliness. Each product was compared based on customer ratings and expert advice.

What we ruled out and why

Products not included in our list either lacked essential features or received poor feedback from users. Thermostats that were complicated to install or had low compatibility with existing systems were ruled out. This helped us focus only on the best options.

What we did not do

We did not conduct hands-on testing or lab measurements. Our assessment is based solely on research and compiled data. No scores or ratings were invented; all conclusions are based on existing user and expert reviews.

How often this page is updated

This page will be updated regularly to reflect changes in product availability and new reviews. Information will be re-evaluated every six months to ensure accuracy. Check back for the latest recommendations in smart thermostats.

How to Choose Smart Thermostats

Compatibility with HVAC Systems

Check if the smart thermostat is compatible with your home HVAC system. Most thermostats work with various systems but may require a common wire (C-wire). You can use compatibility checkers from brands to verify before buying.

Energy Efficiency Ratings

Look for ENERGY STAR certified models. These thermostats help save energy and lower your utility bills. Certifications indicate that the thermostat meets strict energy efficiency guidelines.

Smart Features

Decide what smart features you want. Options like remote control, learning capabilities, and voice assistant integration can enhance your experience. More features can mean higher prices, so balance them with your budget.

Ease of Installation

Consider how easy the thermostat is to install. Some models have DIY options that allow you to set it up without professional help. If you are not comfortable with installation, choose a model that offers professional installation.

Mobile App Support

Check if the thermostat has a user-friendly mobile app. This will allow you to control the temperature and settings from your phone. A good app should be easy to work through and provide helpful features.

What to look for

Smart Features

Smart thermostats come with various features that enhance convenience. Look for models that support voice control and remote access via smartphone apps. Some thermostats learn your habits and adjust settings automatically for optimal comfort and energy savings.

Energy Savings

Energy savings is a major benefit of smart thermostats. Many models can reduce your heating and cooling costs by up to 23%. Energy-efficient models are often ENERGY STAR certified, which indicates they meet strict energy efficiency standards.

Design and Display

Consider the design and display of the thermostat. A clear, easy-to-read display can make it simple to adjust settings. Many models come with sleek designs that blend well with modern home decor.

Installation Requirements

Installation requirements vary by model. Some thermostats need a common wire (C-wire) for power, while others can work without it. Check your HVAC system’s setup to ensure compatibility before purchasing.

Wi-Fi Connectivity

Wi-Fi connectivity is important for remote access and smart features. Make sure the thermostat can connect to your home Wi-Fi network. Most modern smart thermostats use 2.4 GHz or 5 GHz bands for better connectivity.

Frequently asked questions

What is the cnet best smart thermostat?

The cnet best smart thermostat refers to the top-rated smart thermostats reviewed by CNET, focusing on energy efficiency and smart features.

How much can I save with a smart thermostat?

You can save up to 23% on heating and cooling costs with an energy-efficient smart thermostat.

Do I need a C-wire for smart thermostats?

Many smart thermostats require a common wire (C-wire) for power, but some models can operate without it.

Can I control my smart thermostat with my phone?

Yes, most smart thermostats come with mobile apps that let you control settings from your smartphone.

Are smart thermostats compatible with all HVAC systems?

Not all smart thermostats are compatible with every HVAC system. Check compatibility before purchasing.

Sources and standards

Background reading we checked while putting this guide together:

About the author

Radhika Gupta

Radhika Gupta 12+ years

Editor, Best Under 2026

Radhika Gupta builds the buying guides on Best Under 2026. Every shortlist starts from the manufacturer specification and the live Amazon listing, then gets cut down by who the product actually suits. Nothing here is hands-on tested, and we do not pretend otherwise — where a guide names a drawback it comes from the spec sheet or from a pattern in buyer reports, not from a lab. Prices are pulled from Amazon and stamped with the date they were checked. If something here is wrong, email hello@bestunder2026.com and it gets fixed.

Similar guides