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If you’re shopping for the Best Smart Thermostat, you already know the appeal: better comfort, more convenient scheduling, and modern control from your phone or smart speaker. The products below cover a wide range of needs, from simple DIY-friendly options to feature-rich models with room sensors, air quality monitoring, and advanced home integration.
When comparing the options in this list, pay close attention to compatibility, installation requirements like C-wire support, app and voice assistant support, display style, and whether you want basic programmable control or more advanced sensing features. Price and user ratings can also help narrow things down, especially if you’re deciding between value-focused models and premium choices.
Let’s get started!
Our Top Picks at a Glance
| Product | Best For | Buy Now |
|---|---|---|
| ecobee Smart Thermostat Essential | Best Overall | Buy |
| Sensi Smart Thermostat ST55 | Best Value | Buy |
| Google Nest Learning Thermostat (4th gen) | Best Premium Pick | Buy |
Best Smart Thermostat
1. Best Overall: ecobee Smart Thermostat Essential
- 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
The ecobee Smart Thermostat Essential is a strong starting point for anyone who wants a modern smart thermostat with broad voice assistant support. It works with Siri, Alexa, and Google Assistant, which makes it easy to fit into different smart home setups.
It is also Energy Star certified and programmable, so it suits homeowners who want more control over comfort and energy use. At $139.99, it lands in a very reasonable middle ground between basic and premium smart thermostats.
With a 4.3 rating, it presents a balanced mix of functionality and affordability. If you want a clean, dependable option that covers the core smart thermostat essentials, this model is worth serious consideration.
Pros
- Works with Siri, Alexa, and Google Assistant
- Energy Star certified
- Programmable Wi-Fi thermostat
- Mid-range pricing
Cons
- Does not include advanced extras in the listing
- May not be the best fit for buyers wanting premium sensors
2. Best Value: Sensi Smart Thermostat ST55
- 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
The Sensi Smart Thermostat ST55 is an appealing choice for shoppers who want a lower-cost smart thermostat without giving up core features. It includes Wi-Fi connectivity, programmability, and mobile app support, all at a notably accessible price point of $89.97.
This model also emphasizes data privacy and easy DIY installation, which can be especially attractive if you want a straightforward setup. With Energy Star certification and Alexa compatibility, it offers a practical feature set for everyday use.
Its 4.4 rating suggests strong user satisfaction for the price. For budget-conscious buyers seeking a reliable smart thermostat, this is one of the clearest value picks in the lineup.
Pros
- Affordable price
- Easy DIY install
- Data privacy focus
- Works with Alexa
Cons
- Fewer advanced features than premium models
- Best suited for buyers who want the basics
3. Best Premium Pick: ecobee Smart Thermostat Premium
- Save up to 26% per year on heating and cooling costs. ENERGY STAR certified. Included SmartSensor (50 dollar value) prompts your thermostat to make temperature adjustments ensuring comfort. Compared to a hold of 72°F/22°C
- Seamlessly connects to ecobee Smart Doorbell Camera (wired) for a live stream of your door and enables two-way talk from your smart thermostat
- Compatible with 95% of systems. Check your system’s compatibility with our Compatibility Checker on the ecobee support page. The Power Extender Kit (PEK) and Trim Kit is included in the box with everything else you’ll need for an easy DIY install
The ecobee Smart Thermostat Premium is the most feature-rich ecobee option in this list. It includes a smart sensor and an air quality monitor, which helps it stand out for buyers who want more home comfort insight in one device.
It also works with Siri, Alexa, and Google Assistant, and it is Energy Star certified. The black finish gives it a sleek look, and the $259.99 price places it firmly in the premium category.
With a 4.3 rating, it appeals to users who prioritize added intelligence and home monitoring features over a lower upfront cost. If you want a higher-end thermostat experience, this is a strong candidate.
Pros
- Includes smart sensor
- Air quality monitor
- Works with Siri, Alexa, and Google Assistant
- Energy Star certified
Cons
- Higher price than most options listed
- May be more than some households need
4. Best Touchscreen Pick: Emerson Sensi Touch Wi-Fi Smart Thermostat
- PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
- EASY DIY INSTALLATION: Use the built-in level, illuminated easy-click terminals and step-by-step app instructions for a quick installation; Works with the HVAC equipment found in most homes. Common wire (c-wire) is required
- 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
The Emerson Sensi Touch Wi-Fi Smart Thermostat is built around a touchscreen color display, giving it a more modern and easy-to-read interface. It works with Alexa and is Energy Star certified, making it a solid option for everyday smart home use.
This thermostat requires a C-wire, so it is important to confirm compatibility before purchasing. At $117.46, it remains reasonably priced for a touchscreen smart thermostat.
Its 4.5 rating is one of the highest in this list, which adds confidence for buyers who want a well-liked model with a clean display and dependable functionality.
Pros
- Touchscreen color display
- Works with Alexa
- Energy Star certified
- Strong user rating
Cons
- C-wire required
- Limited smart assistant support compared with some rivals
5. Best For Smart Sensors: Honeywell Home T9 WiFi Smart Thermostat
- SAVE MONEY AND ENERGY. Adjust your ENERGY STAR certified thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with Auto Home/Away Scheduling. Save even more by checking with your energy provider about available energy savings rebates to save on your purchase (rebate finder link above). 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.
- LIVE AND SLEEP SMARTER. Choose the temperature in a specific room, like the bedroom, to be exactly what you want it to be, to help get a better night’s sleep. Or let the Smart Room Sensors automatically detect which rooms people are in and focus comfort where it matters automatically.
- AMAZING SENSOR RANGE. The battery powered Smart Room Sensors utilize unique Honeywell Home technology to deliver an efficient signal up to 200 ft range. (Could be further depending on home construction.)
The Honeywell Home T9 WiFi Smart Thermostat comes with one smart room sensor, which makes it appealing for buyers focused on room-by-room comfort. Its touchscreen display and white design give it a clean, contemporary look.
This model is listed at $209.00 and carries a 4.3 rating. That puts it in the upper-mid range, especially for shoppers who want the benefit of included sensor support.
If you want a thermostat that is ready to help with temperature balancing in a specific room, the T9 is a practical and well-known option to consider.
Pros
- Includes one smart room sensor
- Touchscreen display
- Useful for focused room comfort
- Recognized Honeywell smart thermostat line
Cons
- Higher price
- Only one sensor included
6. Best Learning Thermostat: Google Nest Learning Thermostat (4th gen)
- Nest’s smartest, most advanced thermostat yet, the Google Nest Learning Thermostat (4th gen) is a beautiful, brilliant way to save energy, keep your home comfortable, and help make sure your heating and cooling systems are running smoothly[4]
- Savings you can count on: The Nest Learning Thermostat can help save up to 31% on heating and cooling bills[2]
- Improved compatibility: It works with most 24V systems, including gas, electric, oil, forced air, heat pump, and radiant, and no C wire is required for installation in most homes; visit the Nest Compatibility Checker for more info[5]
The Google Nest Learning Thermostat (4th gen) is designed for buyers who want a premium, polished smart thermostat experience. This bundle includes a Nest Temperature Sensor (2nd gen), which adds more flexibility for managing room temperature.
At $229.99 and with a 4.4 rating, it sits in the premium range while offering the familiar Nest approach to smart home control. The Obsidian finish also gives it a distinctive, upscale appearance.
For shoppers who like the Nest ecosystem and want a learning thermostat with added temperature sensing, this is one of the most compelling models in the list.
Pros
- Includes Nest Temperature Sensor
- Premium learning thermostat design
- Compatible with Alexa
- Strong brand recognition
Cons
- Premium price
- May appeal more to Nest ecosystem users
7. Best Compact Choice: Google Nest Thermostat
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.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.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. You can control your Nest Thermostat manually when there's no internet connection.
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home
The Google Nest Thermostat is a streamlined smart thermostat option for buyers who want the Nest experience in a simpler package. It is a programmable Wi-Fi thermostat with a Fog finish and a lower price than the learning model.
At $118.99 and with a 4.2 rating, it may be attractive to shoppers looking for an approachable entry point into smart thermostat ownership. Its design is clean and minimal, which some homeowners will prefer.
While it may not offer the same advanced package as the learning thermostat, it still fits well for buyers who value straightforward smart control from a trusted brand.
Pros
- More affordable Nest option
- Programmable Wi-Fi thermostat
- Sleek, simple design
- Good starting point for smart home control
Cons
- Lower rating than some rivals
- Fewer advanced features than premium models
8. Best Color Display Pick: Honeywell Home RTH9585WF1004
- COMFORT COMES IN YOUR COLOR. Personalize your Wi-Fi Smart Color Programmable Thermostat to fit your décor.
- SAVE ENERGY AND GET REWARDED by checking with your energy provider about available rebates. 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.
- YOUR SCHEDULE. YOUR WAY. Flexible programming options for your schedule or utility company’s peak rate pricing.
The Honeywell Home RTH9585WF1004 is a Wi-Fi smart color thermostat with a touch screen and 7-day programmable control. It is Energy Star certified and Alexa Ready, which makes it a practical fit for smart home users.
Priced at $141.99, it sits in the middle of the pack. Its gray finish and color display help it stand out a little from more basic thermostat designs.
With a 4.3 rating, it remains a respectable choice for shoppers who want an established thermostat with clear display appeal and reliable programming capabilities.
Pros
- Color touch screen
- 7-day programmable
- Energy Star certified
- Alexa Ready
Cons
- Not the lowest price in the segment
- May be more traditional than some smart-home-focused models
9. Best For DIY Install: Sensi Touch 2 Smart Thermostat
- WORKS WITH ROOM SENSORS: Compatible with Sensi Room Sensors to balance temperatures throughout your home (sold separately)
- PRIVACY PROTECTION: Sensi won’t sell your personal information to third parties
- SAVE ABOUT 23% ON HVAC ENERGY: The ENERGY STAR-certified Sensi Touch 2 smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
The Sensi Touch 2 Smart Thermostat is a good fit for buyers who want a touchscreen color display and a setup described as easy DIY. It also emphasizes data privacy, which may matter for users who are cautious about connected devices.
At $150.25 and with a 4.4 rating, it offers a balanced premium-to-midrange value. It works with Alexa and is Energy Star certified, making it a versatile option for smart-home-friendly households.
If you want a modern Sensi model with a little more flexibility and a refined interface, the Touch 2 is a compelling option.
Pros
- Touchscreen color display
- Easy DIY installation
- Data privacy focus
- Works with Alexa
Cons
- C-wire required
- Higher price than the ST55
10. Best For Whole-Home Comfort: Honeywell Home T9 WIFI Smart Thermostat
- HELP SAVE ENERGY. See your energy use in the Monthly Energy Report, and help save even more with a schedule that adapts to your lifestyle, and by connecting with your utility efficiency program..EFFICIENCY AND REWARDS. Connect your Honeywell Home account with your utility to earn rewards each season for your energy efficiency.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.
- AUTO HOME AND AWAY MODE. Adjust your thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with geofencing.
- MULTI-ROOM FOCUS. Add Smart Room Sensors to focus the temperature on multiple rooms for comfort where it matters to you. (Sensors sold separately)
The Honeywell Home T9 WIFI Smart Thermostat is another strong entry in the T9 family, offering smart room sensor readiness and a touchscreen display. It works with Alexa and Google Assist, giving it broad voice control support.
At $179.99 and with a 4.4 rating, it feels like a solid mid-premium option for households looking for better room-based comfort management. The sensor-ready design adds useful flexibility.
This version of the T9 will appeal to shoppers who want a dependable Honeywell smart thermostat with a balance of comfort features and familiar controls.
Pros
- Smart room sensor ready
- Touchscreen display
- Works with Alexa and Google Assist
- Good rating
Cons
- Sensor sold separately based on listing title
- Priced above entry-level choices
11. Best For Premium HVAC Control: Lennox S40
- To provide worry-free 10 year warranty against manufacturing defects or defects. To maintain warranty validity, it is necessary to hire a certified HVAC loader for proper installation. Failure to use a professional HVAC loader may render the warranty void. If the thermostat is not professionally installed, the item cannot be returned or returned. How to register for warranty, instruction included in the box.
- It has a 7 inch high resolution color screen for easy readability. User-friendly touchscreen for easy system configuration and maintenance alerts. Using geographical fencing technology, multiple programs offer One-Touch Away Mode and Smart Away feature.
- Compatible with 4-wire standard thermostat cables, use protected thermostat cable to prevent noise interference. Works with most 24VAC ovens, air conditioners, air conditioning processors and heat pump (up to 3-stage heat and 2 cooling stages) outside of the communication of HVAC equipment outside LENNOX.
The Lennox S40 is a smart thermostat geared toward communicating system control and high-efficiency use. It includes touchscreen control, Wi-Fi connectivity, geo-fencing, remote access, and Alexa support.
With a $349.99 price tag, it is one of the most expensive products in the list, and its 4.5 rating suggests it is well received by buyers who need its advanced functionality.
If your home uses a compatible Lennox setup and you want more advanced control, this model stands out as a premium specialist option.
Pros
- Communicating system control
- Geo-fencing
- Remote access
- Alexa enabled
Cons
- Very high price
- Best suited for specific Lennox-compatible systems
12. Best Traditional Premium Pick: Honeywell TH9320WF5003 Wi-Fi 9000
- Made in United States
- Package length : 6.0"
- Package width : 2.0"
The Honeywell TH9320WF5003 Wi-Fi 9000 is a color touch screen programmable thermostat aimed at buyers who want a more traditional premium thermostat experience. It is described as requiring a C wire, so that is an important compatibility note.
At $188.00 and with a 4.4 rating, it is positioned as a solid mid-premium choice. The white finish and compact size keep the look clean and understated.
This model is a good fit for shoppers who want a proven thermostat line with smart connectivity and an easy-to-use display.
Pros
- Color touch screen
- Programmable functionality
- Good rating
- Established Honeywell option
Cons
- Requires C wire
- Higher cost than basic smart thermostats
13. Best For Smart Home Integration: Honeywell Home X8S Smart Thermostat
- "Doorbell Camera View & Intercom: See and speak to visitors at your door directly from the thermostat – compatible with First Alert VX1 and Ring streaming doorbells (not included)"
- Customizable Display: A sleek 5” display delivers enhanced visibility with the option to choose the color and style to match your home
- "Precision Comfort & Air Quality: Comfort is more than just the perfect temperature, maintain optimal indoor air quality (IAQ) with humidity and ventilation control to keep air fresh (additional HVAC equipment or accessories may be required)"
The Honeywell Home X8S Smart Thermostat brings together room sensor support, video doorbell compatibility, IAQ control, and a customizable touchscreen display. That combination makes it one of the more advanced Honeywell options in the list.
At $249.00 and with a 4.4 rating, it sits in the premium range. The white design keeps it neutral, while the added smart home compatibility broadens its appeal.
For buyers who want a thermostat that connects with more of their smart home features, the X8S delivers a feature-rich package.
Pros
- Room sensor included
- Video doorbell compatibility
- IAQ control
- Customizable touchscreen display
Cons
- Higher price point
- May be more advanced than some users need
14. Best For Established Brand Buyers: Honeywell Home T9 WiFi Smart Thermostat with Sensor Ready Design
- HELP SAVE ENERGY. See your energy use in the Monthly Energy Report, and help save even more with a schedule that adapts to your lifestyle, and by connecting with your utility efficiency program..EFFICIENCY AND REWARDS. Connect your Honeywell Home account with your utility to earn rewards each season for your energy efficiency.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.
- AUTO HOME AND AWAY MODE. Adjust your thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with geofencing.
- MULTI-ROOM FOCUS. Add Smart Room Sensors to focus the temperature on multiple rooms for comfort where it matters to you. (Sensors sold separately)
This Honeywell Home T9 version is another strong option for buyers drawn to the Honeywell lineup and looking for smart room sensor readiness. With Alexa and Google Assist support, it integrates well into common smart home setups.
The touchscreen display helps keep it approachable and easy to use, while the $179.99 price reflects its mid-to-upper range positioning. Its 4.4 rating suggests users generally view it well.
If you want a thermostat from a well-known brand and like the idea of adding room sensors later, this model remains a practical candidate.
Pros
- Smart room sensor ready
- Alexa and Google Assist support
- Touchscreen display
- Well-rated product
Cons
- Not the cheapest choice
- Sensor-related setup may add complexity
15. Best For Advanced Honeywell Features: Honeywell Home X8S Smart Thermostat
- "Doorbell Camera View & Intercom: See and speak to visitors at your door directly from the thermostat – compatible with First Alert VX1 and Ring streaming doorbells (not included)"
- Customizable Display: A sleek 5” display delivers enhanced visibility with the option to choose the color and style to match your home
- "Precision Comfort & Air Quality: Comfort is more than just the perfect temperature, maintain optimal indoor air quality (IAQ) with humidity and ventilation control to keep air fresh (additional HVAC equipment or accessories may be required)"
The Honeywell Home X8S Smart Thermostat deserves another look for buyers who want a more advanced feature set from Honeywell. Its room sensor, IAQ control, and customizable touchscreen display make it stand apart in the brand lineup.
Video doorbell compatibility adds another layer of smart home integration, which may be useful for connected households. At $249.00, it is clearly positioned as a premium product.
With its 4.4 rating, it should appeal to users who want a thermostat that can support a broader smart home ecosystem without sacrificing style.
Pros
- Room sensor included
- IAQ control
- Video doorbell compatibility
- Customizable touchscreen display
Cons
- Expensive
- May be more feature-heavy than necessary for basic needs
Buying Guide
Compatibility
Before choosing a smart thermostat, make sure it matches your HVAC system and wiring needs. Some models in this list require a C-wire, while others may be easier to install. Checking compatibility first can save time and avoid returns.
Installation
If you want a simple upgrade, look for models described as easy DIY installs. Those can be especially helpful for homeowners who prefer a quicker setup without hiring a professional.
Smart Assistant Support
Voice assistant support can make a thermostat more convenient to use. Several products here work with Siri, Alexa, and Google Assistant, while others focus on Alexa or Google support only. Choose the assistant that fits your existing smart home system.
Display Type
Touchscreen and color display models are easier to navigate and often look more modern. If display style matters to you, compare the interface before deciding.
Features vs. Price
Some buyers want a straightforward programmable thermostat, while others want extras like room sensors, air quality monitoring, or advanced home integration. The best smart thermostat for you will usually be the one that balances the features you need with a price you are comfortable paying.
Frequently Asked Questions
What is the best smart thermostat overall?
The ecobee Smart Thermostat Essential is a strong overall pick because it offers programmable Wi-Fi control, Energy Star certification, and compatibility with Siri, Alexa, and Google Assistant.
Which smart thermostat is the best value?
The Sensi Smart Thermostat ST55 stands out for value thanks to its lower price, easy DIY install, Energy Star certification, and Alexa support.
Do I need a C-wire for a smart thermostat?
Some smart thermostats require a C-wire, while others may not. Always check the product listing carefully before buying to make sure your home setup is compatible.
Are smart thermostats worth it?
For many homeowners, yes. Smart thermostats can make temperature control more convenient, offer programmable scheduling, and help support more efficient heating and cooling habits.
Which smart thermostat is best for premium features?
The ecobee Smart Thermostat Premium and the Honeywell Home X8S Smart Thermostat are among the most feature-rich options in this list, depending on whether you want air quality monitoring or broader smart home integration.
Conclusion
Choosing the Best Smart Thermostat depends on your home setup, budget, and the features that matter most to you. If you want the strongest all-around balance, the ecobee Smart Thermostat Essential is an excellent place to start. If price is your main concern, the Sensi Smart Thermostat ST55 offers standout value.
For shoppers who want premium features, the ecobee Smart Thermostat Premium, Google Nest Learning Thermostat (4th gen), and Honeywell Home X8S bring more advanced options to the table. No matter which model you choose, the right smart thermostat can make your home more comfortable and your daily routine easier.