top 15 energy saving thermostats
AIThis post was created with the assistance of artificial intelligence (AI).

If you’re looking for a smart thermostat that can boost energy efficiency, offer remote control, and integrate with your smart home system, you’re in the right place. The Honeywell Home RTH9585WF stands out as the best overall choice with its intuitive touchscreen and compatibility. For those prioritizing seamless learning features, the Google Nest Learning Thermostat is a top pick, while the Amazon Smart Thermostat offers incredible value for budget-conscious buyers. However, tradeoffs include varying levels of complexity, compatibility, and price. Continue reading to see a detailed breakdown of these options and find the best fit for your home and needs.

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15
compared
6
brands
Which smart thermostat should you buy?
★ Top Pick
Honeywell Home RTH9585WF Wi-Fi
Best Overall for Customization and Compatibility
Vivid color touch screen that can match home decor
See on Amazon →
Homeowners seeking energy savings and easy remote control with a straightforward interface.
Honeywell Home RTH9600WF Smart
Energy-efficient with ENERGY STAR certification
View on Amazon →
DIY homeowners seeking an affordable, easy-to-install smart thermostat with proven energy savings.
Sensi Smart Thermostat
Easy DIY installation with clear app instructions
View on Amazon →
Amazon smart home users who want easy, budget-friendly heating control with Alexa integration.
Amazon Smart Thermostat
Easy DIY installation with app guidance
View on Amazon →
Homeowners who want advanced, occupancy-based comfort adjustments and smart home ecosystem integration.
ecobee Smart Thermostat Enhanc
Automatic occupancy-based temperature adjustments
View on Amazon →
Pros & cons at a glance
Honeywell Home RTH9585WF Wi-Fi
✓ Vivid color touch screen that can match home decor
✗ Requires existing C-wire, complicating installation for some
Honeywell Home RTH9600WF Smart
✓ Energy-efficient with ENERGY STAR certification
✗ Requires C-wire for installation
Sensi Smart Thermostat
✓ Easy DIY installation with clear app instructions
✗ Limited visual appeal with traditional look
Amazon Smart Thermostat
✓ Easy DIY installation with app guidance
✗ Requires C-wire for installation
ecobee Smart Thermostat Enhanc
✓ Automatic occupancy-based temperature adjustments
✗ Requires Wi-Fi for remote control
Google Nest Thermostat
✓ Easy DIY installation typically within 30 minutes
✗ May need additional accessories or wiring for certain HVAC systems
Google Nest Thermostat
✓ Supports voice control with Google Assistant and Matter
✗ No lock feature available
Amazon Smart Thermostat
✓ Easy to install with guided instructions
✗ Requires C-wire for installation
ecobee Smart Thermostat Premiu
✓ Supports voice control with Siri and Alexa
✗ Some features may require a subscription
ecobee Smart Thermostat Essent
✓ Easy DIY installation without C-wire
✗ Requires compatibility check for HVAC systems
Honeywell Home T5 Smart Wi-Fi
✓ Allows remote control via smartphone for convenience
✗ Requires a C-wire power adapter, which may need professional installation
Google Nest Learning Thermosta
✓ Large display with Dynamic Farsight for easy readability
✗ Requires Wi-Fi for full features, limiting offline use
Honeywell Home X2S Smart Wi-Fi
✓ Compatible with Alexa, Google Assistant, and Apple HomeKit
✗ Requires a C-wire for installation, which may require professional help
Sensi Lite Smart Thermostat
✓ Simple DIY installation with clear instructions
✗ Requires a common wire for most systems, limiting compatibility
ProStat PSP4273RT Smart Thermo
✓ Supports up to 4 heating and 2 cooling stages for multi-zone control
✗ Complex installation may require professional help

Key Takeaways

  • Top contenders balance smart features like Alexa or amazon.com/dp/B08HRPDYTP?tag=avaoroi-20&ascsubtag=dc-964740″ target=”_blank” rel=”nofollow sponsored noopener”>Google Assistant integration with user-friendly interfaces.
  • Higher-priced models often include learning capabilities and sensors for better energy savings, but may be more complex to install.
  • Budget options like Amazon Smart Thermostat excel in value but lack advanced features and customization.
  • Compatibility with existing smart home ecosystems (Alexa, Google Home, Siri) is a key factor in choosing the right model.
  • Build quality and display interface vary, affecting ease of use and durability over time.
2
Honeywell Home RTH9600WF Smart
Best for Energy Efficiency and Smart Control
1
Honeywell Home RTH9585WF Wi-Fi
Best Overall for Customization and Compatibility
3
Sensi Smart Thermostat
Best for DIY Installers and Cost-Conscious Users

Our Top Smart Thermostat Picks

Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa ReadyHoneywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa ReadyBest Overall for Customization and CompatibilityColor: GrayProgrammable: 7 DayDisplay: Touch ScreenVIEW ON AMAZONSee Our Full Breakdown
Honeywell Home RTH9600WF Smart Color Thermostat – ENERGY STAR Wi-Fi Programmable Touchscreen, Alexa ReadyHoneywell Home RTH9600WF Smart Color Thermostat - ENERGY STAR Wi-Fi Programmable Touchscreen, Alexa ReadyBest for Energy Efficiency and Smart ControlEnergy Star Certified: YesWi-Fi Connectivity: YesTouchscreen: YesVIEW ON AMAZONSee Our Full Breakdown
Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55Best for DIY Installers and Cost-Conscious UsersWi-Fi: YesEnergy Savings: About 23%Compatibility: Most HVAC systemsVIEW ON AMAZONSee Our Full Breakdown
Amazon Smart Thermostat – Pack of 2Amazon Smart Thermostat – Pack of 2Best for Alexa-Centric Smart Home AutomationC-wire required: YesPack size: 2Compatibility: Alexa, RingVIEW ON AMAZONSee Our Full Breakdown
ecobee Smart Thermostat Enhanced, Programmable Wi-Fi Thermostatecobee Smart Thermostat Enhanced, Programmable Wi-Fi ThermostatBest Premium with Smart Sensor SupportCompatibility: Most HVAC systemsControl: Wi-Fi, app, Apple WatchIncludes: Power Extender Kit, Trim KitVIEW ON AMAZONSee Our Full Breakdown
Google Nest Thermostat – Smart Wi-Fi Programmable Thermostat for Home – SnowGoogle Nest Thermostat - Smart Wi-Fi Programmable Thermostat for Home - SnowBest Overall for Energy Efficiency and Ease of UseConnectivity Protocol: Wi-FiWi-Fi Frequency: 2.4 GHz and 5 GHzCompatibility: Works without a C wire in most homes; may require a C wire for some systemsVIEW ON AMAZONSee Our Full Breakdown
Google Nest Thermostat – Smart Programmable Wi-Fi Thermostat – CharcoalGoogle Nest Thermostat - Smart Programmable Wi-Fi Thermostat - CharcoalBest for Compatibility and Smart Home IntegrationConnectivity: Wi-Fi 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz, Bluetooth Low EnergyColor: CharcoalCompatibility: Works without C wire in most homes; check system compatibilityVIEW ON AMAZONSee Our Full Breakdown
Amazon Smart ThermostatAmazon Smart ThermostatBest for Alexa Users and Simple InstallationWorks with: Alexa and RingC-wire required: YesEnergy savings: Up to $90 annuallyVIEW ON AMAZONSee Our Full Breakdown
ecobee Smart Thermostat Premium – WiFi, Siri & Alexa Built-In with Smart Sensorecobee Smart Thermostat Premium - WiFi, Siri & Alexa Built-In with Smart SensorBest Premium for Room-by-Room Comfort and Advanced FeaturesEnergy Savings: Up to 26%SmartSensor Value: $50Compatibility: Most HVAC systems (check support page)VIEW ON AMAZONSee Our Full Breakdown
ecobee Smart Thermostat Essential – WiFi Thermostat, Energy Star Certifiedecobee Smart Thermostat Essential - WiFi Thermostat, Energy Star CertifiedBest for Budget-Friendly, Easy DIY InstallationCompatibility: Most 24 VAC HVAC systems including gas, oil, electric, dual fuel, heat pumpConnectivity: WiFiEnergy Star Certified: YesVIEW ON AMAZONSee Our Full Breakdown
Honeywell Home T5 Smart Wi-Fi ThermostatHoneywell Home T5 Smart Wi-Fi ThermostatBest for Customizable Scheduling and GeofencingScheduling: 7-day flexible schedulingConnectivity: Wi-FiCompatibility: Most heat/cool oil furnace systemsVIEW ON AMAZONSee Our Full Breakdown
Google Nest Learning Thermostat (4th gen) + Nest Temperature Sensor (2nd gen) – ObsidianGoogle Nest Learning Thermostat (4th gen) + Nest Temperature Sensor (2nd gen) - ObsidianBest for Intelligent Learning and Multi-Zone ControlModel: 4th genColor: ObsidianCompatibility: Most 24V systems including gas, electric, oil, heat pumpVIEW ON AMAZONSee Our Full Breakdown
Honeywell Home X2S Smart Wi-Fi Thermostat, WhiteHoneywell Home X2S Smart Wi-Fi Thermostat, WhiteBest for Compatibility with Major Smart Home PlatformsConnectivity: WiFi 2.4/5GHzCompatibility: Up to 2 heat/2 cool conventional, heat pump, hot waterPower: C-wire required (24 VAC)VIEW ON AMAZONSee Our Full Breakdown
Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25Best for Easy DIY Installation and Basic ControlConnectivity: WiFiCompatibility: Most HVAC systems with common wireCertification: Energy StarVIEW ON AMAZONSee Our Full Breakdown
ProStat PSP4273RT Smart Thermostat Wi-Fi Touchscreen 7-Day ProgrammableProStat PSP4273RT Smart Thermostat Wi-Fi Touchscreen 7-Day ProgrammableBest for Multi-Zone and Fuel EfficiencyCompatibility: Heat pump and gas furnaceStages of Heating: 4Stages of Cooling: 2VIEW ON AMAZONSee Our Full Breakdown
Specs at a glance
smart thermostatCompatibility
Honeywell Home RTH9585WF Wi-FiForced air, hot water, steam, heat pumps with electric backup
Honeywell Home RTH9600WF SmartForced air, hot water, steam, heat pumps
Sensi Smart ThermostatMost HVAC systems
Amazon Smart ThermostatAlexa, Ring
ecobee Smart Thermostat EnhancMost HVAC systems
Google Nest ThermostatWorks without a C wire in most homes; may require a C wire for some systems
Google Nest ThermostatWorks without C wire in most homes; check system compatibility
Amazon Smart Thermostat—
ecobee Smart Thermostat PremiuMost HVAC systems (check support page)
ecobee Smart Thermostat EssentMost 24 VAC HVAC systems including gas, oil, electric, dual fuel, heat pump
Honeywell Home T5 Smart Wi-Fi Most heat/cool oil furnace systems
Google Nest Learning ThermostaMost 24V systems including gas, electric, oil, heat pump
Honeywell Home X2S Smart Wi-FiUp to 2 heat/2 cool conventional, heat pump, hot water
Sensi Lite Smart ThermostatMost HVAC systems with common wire
ProStat PSP4273RT Smart ThermoHeat pump and gas furnace

More Details on Our Top Picks

  1. Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready

    Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready

    Best Overall for Customization and Compatibility

    View on Amazon
    The Honeywell Home RTH9585WF stands out for its vibrant color touch screen and flexible weekly programming, making it ideal for users who want a high level of personalization. Compared with the ecobee Smart Thermostat Enhanced, it offers a more visually engaging display but requires a C-wire for installation, which can be a barrier for some. Its energy reports and rebate options make it a solid choice for energy-conscious households, especially those already integrated with Alexa or Google Home. However, the need for a C-wire and its complexity can be drawbacks if you’re not comfortable with wiring or installation. This pick makes the most sense for homeowners seeking a customizable, compatible thermostat that can blend seamlessly with their décor and smart home system.
    Pros:
    • Vivid color touch screen that can match home decor
    • Energy-saving features with detailed reports and rebate options
    • Seamless integration with Alexa and Google Home
    Cons:
    • Requires existing C-wire, complicating installation for some
    • Not compatible with electric baseboard heating
    • Installation can be challenging without professional help

    Best for: Homeowners who want a customizable, visually appealing thermostat with broad smart home compatibility.

    Not ideal for: Renters or those without a C-wire seeking a simple, plug-and-play solution, as installation can be complex.

    • Color:Gray
    • Programmable:7 Day
    • Display:Touch Screen
    • Energy Star:Yes
    • Compatibility:Forced air, hot water, steam, heat pumps with electric backup
    • C-Wire Required:Yes
    Our verdict
    “This thermostat is best for users who want a highly customizable display and robust smart home integration, and are comfortable with more involved installation.”
  2. Honeywell Home RTH9600WF Smart Color Thermostat – ENERGY STAR Wi-Fi Programmable Touchscreen, Alexa Ready

    Honeywell Home RTH9600WF Smart Color Thermostat - ENERGY STAR Wi-Fi Programmable Touchscreen, Alexa Ready

    Best for Energy Efficiency and Smart Control

    View on Amazon
    The Honeywell RTH9600WF offers an ENERGY STAR certification alongside a customizable color touchscreen, making it a great option for those prioritizing energy savings. Its remote control and weather info features make it more advanced than the Sensi ST55, particularly for users who want detailed energy tracking and tips. While it shares the same C-wire requirement and system compatibility as the RTH9585WF, its slightly simpler interface makes it more accessible for users new to smart thermostats. The main tradeoff is that it lacks some of the aesthetic customization options of the RTH9585WF. It’s ideal for energy-conscious homeowners who want a reliable, remote-controllable device with smart features, but are willing to accept a less vibrant display.
    Pros:
    • Energy-efficient with ENERGY STAR certification
    • Customizable color touchscreen with high-definition display
    • Supports remote control and weather info via app
    Cons:
    • Requires C-wire for installation
    • Limited aesthetic customization compared to other models
    • Not compatible with electric baseboard heating

    Best for: Homeowners seeking energy savings and easy remote control with a straightforward interface.

    Not ideal for: Users seeking a highly decorative or feature-rich display, as the color customization is more muted than the RTH9585WF.

    • Energy Star Certified:Yes
    • Wi-Fi Connectivity:Yes
    • Touchscreen:Yes
    • Color Screen:Yes, customizable
    • Compatibility:Forced air, hot water, steam, heat pumps
    • C-Wire Required:Yes
    Our verdict
    “This thermostat is best suited for users focused on energy efficiency and reliable remote operation without needing elaborate display features.”
  3. Sensi Smart Thermostat, Wi-Fi, DIY, Alexa, Energy Star Certified, ST55

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

    Best for DIY Installers and Cost-Conscious Users

    View on Amazon
    The Sensi ST55 is a straightforward, Energy Star-certified thermostat designed for DIY enthusiasts who want to save on installation costs. Its traditional button interface and simple setup make it accessible, especially compared to the more complex Honeywell models. It delivers around 23% HVAC savings, which is competitive with pricier options like ecobee but lacks the high-end display features. It’s perfect for those comfortable with basic wiring and who prioritize ease of installation over aesthetics. The main tradeoff is that it doesn’t offer a color touchscreen or weather info, limiting its appeal for users wanting more visual customization. This model makes sense for budget-minded homeowners who want reliable remote control and energy savings without fuss.
    Pros:
    • Easy DIY installation with clear app instructions
    • Provides significant HVAC energy savings (~23%)
    • Includes maintenance alerts and usage reports
    Cons:
    • Limited visual appeal with traditional look
    • Requires common wire in some setups
    • No advanced display or weather features

    Best for: DIY homeowners seeking an affordable, easy-to-install smart thermostat with proven energy savings.

    Not ideal for: Users desiring a sleek display or advanced features like weather forecasting or color customization.

    • Wi-Fi:Yes
    • Energy Savings:About 23%
    • Compatibility:Most HVAC systems
    • Installation:DIY
    • Design:Traditional with buttons
    • Privacy Protection:Yes
    Our verdict
    “Ideal for budget-conscious DIYers who want reliable energy savings without complicated setup or high-end visuals.”
  4. Amazon Smart Thermostat – Pack of 2

    Amazon Smart Thermostat – Pack of 2

    Best for Alexa-Centric Smart Home Automation

    View on Amazon
    The Amazon Smart Thermostat offers a simple, affordable entry into smart heating control, especially when paired with Alexa or Ring devices. Its straightforward installation and scheduling features make it accessible for many users, but the requirement for a C-wire can be a hurdle in older homes. Compared with the ecobee or Honeywell models, it lacks the high-resolution display and advanced energy reports, but it compensates with seamless Alexa integration and a budget-friendly pack of two. Its automation capabilities make it ideal for Amazon-centric households aiming for basic remote control and scheduling. The main limitation is the reliance on Alexa compatibility; if you prefer Google Assistant or Apple HomeKit, this might not be the best fit.
    Pros:
    • Easy DIY installation with app guidance
    • Supports automation and scheduling via Alexa
    • Affordable pack of two for multi-zone control
    Cons:
    • Requires C-wire for installation
    • Limited compatibility outside Alexa and Ring
    • No advanced display or weather features

    Best for: Amazon smart home users who want easy, budget-friendly heating control with Alexa integration.

    Not ideal for: Homeowners seeking a more versatile or high-end display thermostat, or those without existing Alexa infrastructure.

    • C-wire required:Yes
    • Pack size:2
    • Compatibility:Alexa, Ring
    • Energy savings:Up to $50/year
    • Installation:DIY
    • Smart Home Compatibility:Alexa, Ring
    Our verdict
    “This thermostat is best for Alexa-dependent homes seeking simple, budget-friendly control with the convenience of multiple units.”
  5. ecobee Smart Thermostat Enhanced, Programmable Wi-Fi Thermostat

    ecobee Smart Thermostat Enhanced, Programmable Wi-Fi Thermostat

    Best Premium with Smart Sensor Support

    View on Amazon
    The ecobee Smart Thermostat Enhanced combines energy savings with advanced occupancy-based adjustments, making it a top choice for tech-savvy users. Its ability to automatically optimize comfort based on occupancy patterns often outperforms the simpler scheduling of the Honeywell models, especially when paired with optional SmartSensors (sold separately). Compared to the Honeywell RTH9585WF, ecobee’s remote sensors enable room-by-room control, but this adds extra cost. Its compatibility with major smart home ecosystems like Apple HomeKit, Alexa, and Google Assistant broadens its appeal. However, the need to purchase sensors separately and the slightly higher price point can be deterrents. It’s best for users seeking a premium experience with flexible, occupancy-aware control.
    Pros:
    • Saves up to 26% annually on energy costs
    • Automatic occupancy-based temperature adjustments
    • Compatible with major smart home platforms
    Cons:
    • SmartSensors sold separately, increasing total cost
    • Requires Wi-Fi for remote control
    • Compatibility check needed for some HVAC systems

    Best for: Homeowners who want advanced, occupancy-based comfort adjustments and smart home ecosystem integration.

    Not ideal for: Budget-conscious users or those uninterested in additional sensor purchases, as the SmartSensors are sold separately.

    • Compatibility:Most HVAC systems
    • Control:Wi-Fi, app, Apple Watch
    • Includes:Power Extender Kit, Trim Kit
    • Warranty:3 years
    • Energy Savings:Up to 26%
    • Smart Sensors:Sold separately
    Our verdict
    “This premium thermostat suits users wanting intelligent, occupancy-aware heating control with broad smart home compatibility, despite extra sensor costs.”
  6. Google Nest Thermostat – Smart Wi-Fi Programmable Thermostat for Home – Snow

    Google Nest Thermostat - Smart Wi-Fi Programmable Thermostat for Home - Snow

    Best Overall for Energy Efficiency and Ease of Use

    View on Amazon

    This model stands out for its seamless integration with Google Assistant and Alexa, making it ideal for users who prioritize effortless voice control and remote management. Unlike the ecobee Smart Thermostat Premium, it offers a straightforward DIY installation that most homeowners can complete in half an hour, but it may require additional wiring or accessories for some HVAC systems. Its automatic adjustments and HVAC monitoring help optimize energy savings, yet the reliance on internet stability for notifications means it’s less reliable during connectivity issues. Energy-efficient and user-friendly, this pick suits those who want a smart thermostat with minimal fuss and broad compatibility, especially in homes without a C wire.

    Pros:
    • Easy DIY installation typically within 30 minutes
    • Supports voice control via Google Assistant and Alexa
    • Automatic energy-saving adjustments and HVAC monitoring
    Cons:
    • May need additional accessories or wiring for certain HVAC systems
    • Remote control and alerts depend on stable Wi-Fi connection

    Best for: Homeowners seeking a simple, reliable smart thermostat that integrates easily into existing smart home setups, with a focus on energy savings.

    Not ideal for: Advanced users who want detailed customization or advanced sensors without extra wiring, or homes with complex HVAC systems requiring specialized controls.

    • Connectivity Protocol:Wi-Fi
    • Wi-Fi Frequency:2.4 GHz and 5 GHz
    • Compatibility:Works without a C wire in most homes; may require a C wire for some systems
    • Energy Star Certified:Yes
    Our verdict
    “This thermostat makes sense for users seeking a straightforward, energy-efficient device that works well for most standard homes.”
  7. Google Nest Thermostat – Smart Programmable Wi-Fi Thermostat – Charcoal

    Google Nest Thermostat - Smart Programmable Wi-Fi Thermostat - Charcoal

    Best for Compatibility and Smart Home Integration

    View on Amazon

    Compared with the Snow model, the Charcoal version emphasizes compatibility with a wider range of smart home platforms, including Matter support, making it a versatile choice for those with diverse device ecosystems. Its scheduling, remote control, and HVAC monitoring features are comparable, but it lacks a lock feature, which might be a concern for households with children or shared spaces. The design is sleek, and its functionality aligns closely with the Snow model, though some users might find the absence of manual control less flexible. It’s a solid option for users who want a compatible, well-integrated smart thermostat that supports voice commands and system alerts.

    Pros:
    • Supports voice control with Google Assistant and Matter
    • Compatible with various smart home ecosystems
    • HVAC monitoring provides system alerts and maintenance reminders
    Cons:
    • No lock feature available
    • Some systems might need additional wiring or accessories

    Best for: Smart home enthusiasts looking for a thermostat that integrates seamlessly across multiple platforms and supports voice control.

    Not ideal for: Users who prefer manual control or need a lock feature to prevent tampering, or those with complex HVAC systems requiring specific wiring adjustments.

    • Connectivity:Wi-Fi 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz, Bluetooth Low Energy
    • Color:Charcoal
    • Compatibility:Works without C wire in most homes; check system compatibility
    • Features:Energy saving scheduling, remote control, HVAC monitoring, voice control with Google Assistant and Matter
    Our verdict
    “Ideal for tech-savvy homeowners wanting broad compatibility and sleek design, but less suited for those requiring manual controls or security locks.”
  8. Amazon Smart Thermostat

    Amazon Smart Thermostat

    Best for Alexa Users and Simple Installation

    View on Amazon

    This pick is designed for those already invested in the Amazon ecosystem, offering effortless setup and control via Alexa routines. Unlike the ecobee SmartThermostat Premium, it has fewer advanced features like room-specific sensors, but its straightforward installation process and guided app setup make it accessible for beginners. Its energy-saving claims are attractive, with potential savings of up to $90 annually, though it’s dependent on a stable Wi-Fi and a C-wire for installation. If your home is primarily Alexa-based and you want quick, easy control over your HVAC, this thermostat is a practical, budget-friendly choice, but it may feel limited for users seeking advanced automation or multi-room sensor support.

    Pros:
    • Easy to install with guided instructions
    • Remote control via Alexa app and routines
    • Supports programmable schedules and energy savings
    Cons:
    • Requires C-wire for installation
    • Limited compatibility with non-Alexa devices

    Best for: Alexa-centric households seeking a simple, cost-effective smart thermostat with basic scheduling and remote control.

    Not ideal for: Tech enthusiasts wanting advanced sensors or integration with non-Alexa ecosystems, or homes without a C-wire that need more flexible wiring options.

    • Works with:Alexa and Ring
    • C-wire required:Yes
    • Energy savings:Up to $90 annually
    • Programmable:Yes
    • Installation:DIY with app guidance
    Our verdict
    “Great for Alexa users who want an uncomplicated, budget-friendly thermostat, but less so for those needing cross-platform features or advanced automation.”
  9. ecobee Smart Thermostat Premium – WiFi, Siri & Alexa Built-In with Smart Sensor

    ecobee Smart Thermostat Premium - WiFi, Siri & Alexa Built-In with Smart Sensor

    Best Premium for Room-by-Room Comfort and Advanced Features

    View on Amazon

    This model distinguishes itself with its SmartSensor technology, enabling room-specific climate control that surpasses basic models like the Amazon Smart Thermostat. Its compatibility with Siri and Alexa, plus a large, cinematic display, makes it ideal for tech enthusiasts who want high-end automation and integrated voice control. The energy savings of up to 26% are notable, but the need for a subscription for some security features and the additional cost of SmartSensors can add up. Compared to the ecobee SmartThermostat Essential, it offers a more refined interface and extra sensors, making it better suited for larger or multi-room homes, though at a higher price point.

    Pros:
    • Supports voice control with Siri and Alexa
    • Includes SmartSensors for room-by-room comfort
    • Elegant, large display with intuitive interface
    Cons:
    • SmartSensor pack sold separately, increasing overall cost
    • Some features may require a subscription

    Best for: Homeowners seeking a premium, feature-rich thermostat with room-specific comfort and multiple voice options.

    Not ideal for: Budget-conscious users or those uninterested in extra sensors or subscription services, as the cost can escalate with add-ons.

    • Energy Savings:Up to 26%
    • SmartSensor Value:$50
    • Compatibility:Most HVAC systems (check support page)
    • Warranty:3 years
    • Display:Large, vibrant interface
    • Air Quality Monitoring:Yes
    Our verdict
    “Best suited for users wanting a high-end, customizable thermostat with advanced multi-room control and voice integration, despite higher costs.”
  10. ecobee Smart Thermostat Essential – WiFi Thermostat, Energy Star Certified

    ecobee Smart Thermostat Essential - WiFi Thermostat, Energy Star Certified

    Best for Budget-Friendly, Easy DIY Installation

    View on Amazon

    Compared to the ecobee Premium, the Essential model offers a more affordable option with core features like up to 23% energy savings and compatibility with major smart home platforms. Its DIY-friendly design, including no C-wire requirement, makes it accessible for many homeowners, though it lacks the room-specific sensors and advanced display of higher-end models. The SmartSensor compatibility is a plus, but the sensors are sold separately, adding to the initial investment. It’s a good choice for those who want basic smart control and energy efficiency without extra bells and whistles, especially if system compatibility is confirmed beforehand.

    Pros:
    • Easy DIY installation without C-wire
    • Supports major smart home platforms like Apple HomeKit, Google Assistant, and Alexa
    • Energy-saving features that reduce costs
    Cons:
    • SmartSensors sold separately, increasing total cost
    • Requires compatibility check for HVAC systems

    Best for: Budget-conscious homeowners seeking a straightforward, easy-to-install smart thermostat with reliable energy savings.

    Not ideal for: Users wanting detailed automation, room-specific sensors included, or a more premium display, as this model keeps things simple.

    • Compatibility:Most 24 VAC HVAC systems including gas, oil, electric, dual fuel, heat pump
    • Connectivity:WiFi
    • Energy Star Certified:Yes
    • SmartSensor Compatibility:Yes (sold separately)
    • Features:Indoor humidity detection, schedule assistant, time of use
    Our verdict
    “Ideal for budget-minded users wanting a simple, effective thermostat with broad smart home compatibility, but not for those seeking advanced features out of the box.”
  11. Honeywell Home T5 Smart Wi-Fi Thermostat

    Honeywell Home T5 Smart Wi-Fi Thermostat

    Best for Customizable Scheduling and Geofencing

    View on Amazon

    The Honeywell Home T5 stands out for its flexible 7-day scheduling, geofence technology, and energy reports, making it ideal for those who want personalized comfort with remote control. Compared to the Sensi Lite, it offers more advanced scheduling options, but it requires a C-wire, which can complicate installation for some users. Its energy-saving features are robust, helping reduce utility bills, yet it’s not compatible with heating-only oil systems unless a C-wire is present. This model best suits homeowners who value automation and detailed control over their HVAC system while being comfortable with a wired installation.

    Pros:
    • Allows remote control via smartphone for convenience
    • Offers detailed energy-saving reports and flexible scheduling
    • Includes geofence technology for automatic comfort adjustments
    Cons:
    • Requires a C-wire power adapter, which may need professional installation
    • Not compatible with heat-only oil furnace systems without a C-wire

    Best for: Homeowners with existing C-wire setups seeking flexible scheduling and energy reports

    Not ideal for: Renters or those with heating-only oil systems without a C-wire, due to compatibility issues

    • Scheduling:7-day flexible scheduling
    • Connectivity:Wi-Fi
    • Compatibility:Most heat/cool oil furnace systems
    • Energy Certification:ENERGY STAR
    • Power Requirements:C-wire power adapter required
    • Features:Geofence technology, Auto Home/Away Mode
    Our verdict
    “This thermostat suits tech-savvy homeowners wanting advanced scheduling and remote control, provided they have compatible wiring.”
  12. Google Nest Learning Thermostat (4th gen) + Nest Temperature Sensor (2nd gen) – Obsidian

    Google Nest Learning Thermostat (4th gen) + Nest Temperature Sensor (2nd gen) - Obsidian

    Best for Intelligent Learning and Multi-Zone Control

    View on Amazon

    The Nest Learning Thermostat (4th gen) excels at automatic adaptation, helping save up to 31% on energy bills, with a large display and voice control that make daily use effortless. It is more sophisticated than the Honeywell T5 for those who want a thermostat that learns routines over time, but setup can be complex if you’re not familiar with smart devices. The included temperature sensor enhances zone control, making it ideal for larger homes or multi-room comfort. However, it requires a Wi-Fi connection for full functionality, and some users may find initial setup intricate. This pick is perfect for homeowners who want a smart device that adapts intelligently to their lifestyle and integrates seamlessly with voice assistants.

    Pros:
    • Helps save up to 31% on heating and cooling costs
    • Large display with Dynamic Farsight for easy readability
    • Easy to control via smartphone or voice commands
    Cons:
    • Requires Wi-Fi for full features, limiting offline use
    • Setup can be complex for beginners unfamiliar with smart devices

    Best for: Tech-savvy homeowners interested in learning algorithms and multi-zone comfort

    Not ideal for: Users preferring simple, plug-and-play thermostats with minimal setup

    • Model:4th gen
    • Color:Obsidian
    • Compatibility:Most 24V systems including gas, electric, oil, heat pump
    • Display Size:60% larger
    • Sensor:Nest Temperature Sensor (2nd gen)
    • Connectivity:Wi-Fi, Matter compatible
    Our verdict
    “Ideal for those wanting a learning thermostat that maximizes energy savings and integrates with voice assistants, assuming they’re comfortable with setup complexity.”
  13. Honeywell Home X2S Smart Wi-Fi Thermostat, White

    Honeywell Home X2S Smart Wi-Fi Thermostat, White

    Best for Compatibility with Major Smart Home Platforms

    View on Amazon

    The Honeywell Home X2S offers broad compatibility with Alexa, Google Assistant, and Apple HomeKit, making it a flexible choice for those integrated into multiple smart ecosystems. Its customizable scheduling, humidity monitoring, and filter reminders make it a strong contender for those who prioritize home comfort and energy efficiency. Compared to the Sensi Lite, it supports multiple platforms and includes humidity sensors, but it requires a C-wire, which might pose an installation challenge. It does not support electric baseboard heating, limiting its use with certain systems. This thermostat makes the most sense for users who want a versatile, platform-agnostic device that adapts to various HVAC configurations.

    Pros:
    • Compatible with Alexa, Google Assistant, and Apple HomeKit
    • Supports customizable scheduling and humidity monitoring
    • Includes filter reminders and energy-saving features
    Cons:
    • Requires a C-wire for installation, which may require professional help
    • Does not support electric baseboard heating systems

    Best for: Homeowners with multiple smart home devices wanting seamless platform integration

    Not ideal for: Users with electric baseboard heating systems or without a C-wire, due to compatibility constraints

    • Connectivity:WiFi 2.4/5GHz
    • Compatibility:Up to 2 heat/2 cool conventional, heat pump, hot water
    • Power:C-wire required (24 VAC)
    • Features:Humidity monitoring, filter reminders
    • Warranty:2 years
    • Certification:Matter Certified
    Our verdict
    “This thermostat is perfect for those seeking a flexible, multi-platform compatible device to integrate into their smart home ecosystem.”
  14. Sensi Lite Smart Thermostat, WiFi, Alexa, DIY, Energy Star Certified, ST25

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

    Best for Easy DIY Installation and Basic Control

    View on Amazon

    The Sensi Lite offers a straightforward DIY approach with a built-in level and step-by-step instructions, making it accessible for homeowners comfortable with basic installs. Its energy-saving features, including scheduling and geofencing, help reduce HVAC costs around 23%. Compared to the Honeywell X2S, it’s simpler to install but lacks the advanced humidity monitoring and multi-platform compatibility. It’s ideal for those who want a reliable, energy-efficient thermostat without the complexity of extensive setup or integration. However, it requires a common wire for most systems and doesn’t include detailed temperature sensing beyond basic control, which could limit precision in some environments.

    Pros:
    • Simple DIY installation with clear instructions
    • Energy Star certified for efficiency
    • Remote control via mobile app
    • Supports scheduling and geofencing
    Cons:
    • Requires a common wire for most systems, limiting compatibility
    • Limited temperature sensing features, less precision

    Best for: DIY homeowners seeking an easy-to-install, energy-efficient thermostat

    Not ideal for: Households with complex HVAC setups without a common wire or those needing advanced zone controls

    • Connectivity:WiFi
    • Compatibility:Most HVAC systems with common wire
    • Certification:Energy Star
    • Control:Mobile app (Android and iOS)
    • Features:Scheduling, geofencing, remote access
    Our verdict
    “This model suits budget-conscious homeowners looking for straightforward installation and reliable energy savings without complex features.”
  15. ProStat PSP4273RT Smart Thermostat Wi-Fi Touchscreen 7-Day Programmable

    ProStat PSP4273RT Smart Thermostat Wi-Fi Touchscreen 7-Day Programmable

    Best for Multi-Zone and Fuel Efficiency

    View on Amazon

    The ProStat PSP4273RT shines in multi-zone homes, supporting up to 4 heating zones and 2 cooling zones with independent staging, which surpasses the single-zone focus of most other options like the Honeywell T5. Its ability to automatically optimize between heat pumps and gas furnaces offers significant fuel savings, especially in larger or complex systems. The touchscreen control and humidity management add to comfort, but setup can be complicated, often requiring professional assistance. Its higher price reflects its advanced multi-zone capabilities and fuel efficiency features, making it less suitable for simple single-zone setups. This thermostat is best for larger homes or multi-zone systems where cost savings and precise control matter most.

    Pros:
    • Supports up to 4 heating and 2 cooling stages for multi-zone control
    • Automatically optimizes fuel efficiency between heat pumps and gas furnaces
    • Remote control via Wi-Fi and humidity management for comfort
    Cons:
    • Complex installation may require professional help
    • Higher price point due to advanced multi-zone features

    Best for: Large or multi-zone homes needing automated fuel optimization and detailed zone control

    Not ideal for: Small apartments or single-zone homes where basic thermostats suffice and setup complexity isn’t justified

    • Compatibility:Heat pump and gas furnace
    • Stages of Heating:4
    • Stages of Cooling:2
    • Connectivity:Wi-Fi
    • Humidity Control:Yes
    • Alerts:Equipment faults, filter changes, extremes
    Our verdict
    “This thermostat is ideal for multi-zone homes seeking advanced fuel efficiency and precise zone management, provided installation complexity is manageable.”
smart thermostat
What makes a great smart thermostat
1
Compatibility and Ecosystem Integration
Your smart thermostat should work seamlessly with your existing smart home setup.
2
Ease of Installation and User Interface
A straightforward installation process saves time and reduces stress, especially for DIYers.
3
Energy-Saving Features and Sensors
Many smart thermostats include learning algorithms that adapt to your schedule, helping reduce energy consumption.
4
Display Quality and Design
A clear, responsive display improves daily interactions and reduces setup errors.
How to choose your smart thermostat
1
How we picked
I evaluated these smart thermostats based on performance, ease of installation, user interface, integration options, bui
2
Compatibility and Ecosystem Integration
Your smart thermostat should work seamlessly with your existing smart home setup.
3
Ease of Installation and User Interface
A straightforward installation process saves time and reduces stress, especially for DIYers.
4
Energy-Saving Features and Sensors
Many smart thermostats include learning algorithms that adapt to your schedule, helping reduce energy consumption.
5
Display Quality and Design
A clear, responsive display improves daily interactions and reduces setup errors.
Vetted smart thermostat ·
The best smart thermostat, compared
★ Winner Honeywell Home RTH9585WF Wi-Fi
Best Overall for Customization and Compatibility
15compared

How We Picked

I evaluated these smart thermostats based on performance, ease of installation, user interface, integration options, build quality, and energy-saving features. Priority was given to models that offer seamless compatibility with popular smart home ecosystems, along with clear setup instructions. Price was a consideration, but not at the expense of essential features like scheduling, remote access, and sensor support. The ranking reflects a balance between value and advanced capabilities, aiming to serve different user needs—from beginners to tech enthusiasts.
Which smart thermostat fits you?
The everyday user
All-round, reliable
The enthusiast
Premium & high-performance
The gift-giver
Looks & craftsmanship

Factors to Consider When Choosing Smart Thermostat

Choosing the right smart thermostat involves weighing several factors beyond just features. First, consider compatibility with your existing smart home devices to ensure smooth integration. Ease of installation can impact setup time and frustration, especially for DIYers. Energy-saving features like learning algorithms and sensors can reduce your bills but often come at a premium. Think about your preferred voice assistant—whether Alexa, Google Assistant, or Siri—and verify compatibility. Lastly, evaluate the display quality and interface, as these influence daily convenience and long-term durability. Avoid models that overpromise on features you don’t need, and focus on those that align with your home setup and tech comfort level.

Compatibility and Ecosystem Integration

Your smart thermostat should work seamlessly with your existing smart home setup. Consider whether you use Alexa, Google Assistant, or Siri, and select a model that supports your preferred voice platform. Compatibility issues can lead to frustration, so double-check the device’s ecosystem support before purchasing. Some thermostats, like ecobee and Nest, excel in multi-platform integration, offering more flexibility. Avoid models with limited ecosystem support if you plan to expand your smart home system later.

Ease of Installation and User Interface

A straightforward installation process saves time and reduces stress, especially for DIYers. Look for models with clear instructions, straightforward wiring, and minimal setup steps. The user interface, including touchscreen responsiveness and app design, influences daily operation. If you prefer a simple experience, opt for thermostats with intuitive controls and clear displays. Complex setups or poorly designed apps can lead to frustration and decreased usage, so prioritize ease of use.

Energy-Saving Features and Sensors

Many smart thermostats include learning algorithms that adapt to your schedule, helping reduce energy consumption. Additional sensors, like remote temperature sensors, fine-tune climate control in different rooms. While these features can lower bills over time, they often increase the initial cost. Make sure the model supports the sensors and features that match your energy-saving goals. Beware of overly complicated setups that require additional hardware or subscriptions for full functionality.

Price and Long-Term Value

Budget options like the Amazon Smart Thermostat provide fundamental features at a lower cost, ideal for those new to smart home tech. Premium models, such as ecobee Smart Thermostat Premium, offer advanced sensors and learning capabilities for greater savings, but come at a higher price. Consider your long-term savings potential and how much you’re willing to invest upfront. Sometimes paying more yields better durability or features that justify the expense, but avoid overspending on features you won’t use.

Display Quality and Design

A clear, responsive display improves daily interactions and reduces setup errors. Some models feature colorful touchscreens, while others rely on simpler interfaces. Choose a design that fits your aesthetic and is easy to read from across the room. Durability also matters, so look for models with sturdy build quality. Remember, a good display can make regular adjustments easier and more pleasant.

Frequently Asked Questions

Can I install a smart thermostat myself?

Many smart thermostats are designed for DIY installation, especially those with straightforward wiring and clear instructions. However, compatibility with your existing system and electrical setup can influence difficulty. If you’re comfortable with basic wiring and following setup guides, you can likely install most models yourself. For complex systems or if you’re unsure, hiring a professional can prevent wiring issues and ensure optimal operation. Remember, a correct installation affects both performance and safety, so assess your comfort level before proceeding.

Will a smart thermostat work with my existing HVAC system?

Most smart thermostats are compatible with standard HVAC systems, but compatibility depends on your specific setup. Check your system’s wiring and voltage requirements before purchase. Some models, like ecobee and Nest, support a wide range of systems, including heat pumps and multi-stage systems. If your system is older or non-standard, verify compatibility through the manufacturer’s specifications or consult a professional. Using an incompatible thermostat can lead to poor performance or damage.

How do smart thermostats save energy?

Smart thermostats optimize energy use through scheduling, learning your habits, and adjusting temperatures accordingly. Features like geofencing can detect when you’re home or away, reducing heating or cooling when not needed. Additional sensors in different rooms help maintain consistent temperatures, avoiding unnecessary system run time. Over time, these intelligent adjustments can significantly lower energy bills. Keep in mind, the initial investment in features like sensors and learning algorithms can be higher, but savings often offset these costs.

Are smart thermostats secure from hacking?

Security depends on the device’s design and your network practices. Most reputable brands implement encryption and regular firmware updates to protect against vulnerabilities. To enhance security, use strong, unique passwords for your accounts and Wi-Fi network, and enable two-factor authentication where available. Avoid connecting your thermostat to unsecured or public networks. Proper setup minimizes risks and ensures your home climate control remains private and safe.

Is it worth paying extra for a learning thermostat?

Learning thermostats often provide better energy savings by adapting to your habits automatically, which can justify the higher price over time. They eliminate manual adjustments and can optimize heating and cooling schedules for maximum efficiency. However, they may require more initial setup and can be more complex to troubleshoot if issues arise. If you prefer a hands-off approach and want to maximize savings, investing in a learning model like the Nest Learning Thermostat can be worthwhile. For simpler needs, basic models may suffice and save you money upfront.

Conclusion

For those seeking a reliable, feature-rich experience, the Honeywell Home RTH9585WF remains the best overall choice, thanks to its user-friendly touchscreen and broad compatibility. Budget-conscious buyers will find the Amazon Smart Thermostat delivers excellent value, while tech enthusiasts who want the most advanced features should consider the ecobee Smart Thermostat Premium. Beginners or homeowners with straightforward needs will benefit from simple, easy-to-install options like the Sensi Lite. Ultimately, your ideal pick depends on your smart home ecosystem, budget, and whether you prioritize automation or manual control.

FALL

Fall Picks

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