Best Smart Thermostat for Home Assistant in 2025
Updated on July 2025
#1
Recommended
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- Reduces heating and cooling costs by up to 26% annually; ENERGY STAR certified with SmartSensor to optimize temperatures and eliminate hot or cold spots.
- Monitors air quality, alerts for poor conditions, provides improvement tips, and reminds when to replace the air filter.
- Includes smoke alarm detection and break-in alerts; sends notifications for sudden temperature drops.
- Equipped with a smart speaker and voice assistant options for hands-free control and audio playback.
- Compatible with most 24VAC HVAC systems, including special installation kit for homes without C-Wire.
- Automatically pauses heating or cooling when windows or doors are left open for 5 minutes, with required sensors.
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- Reduces heating and cooling costs by up to 26% annually; ENERGY STAR certified with SmartSensor to optimize temperatures and eliminate hot or cold spots.
- Monitors air quality, alerts for poor conditions, provides improvement tips, and reminds when to replace the air filter.
- Includes smoke alarm detection and break-in alerts; sends notifications for sudden temperature drops.
- Equipped with a smart speaker and voice assistant options for hands-free control and audio playback.
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#2
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- Save up to $250 annually on heating and cooling costs by optimizing thermostat settings.
- Compatible with 85% of HVAC systems; use the ecobee Compatibility Checker for verification.
- Adjust temperatures easily via touchscreen or the ecobee app; includes free software upgrades.
- Automatically adapts to your schedule, saving energy while optimizing comfort at home.
- Simple DIY installation available; optional Power Extender Kit can be purchased for homes without a C-Wire.
- Integrates with major smart home ecosystems such as Apple HomeKit, Google Assistant, and Alexa.
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- Save up to $250 annually on heating and cooling costs by optimizing thermostat settings.
- Compatible with 85% of HVAC systems; use the ecobee Compatibility Checker for verification.
- Adjust temperatures easily via touchscreen or the ecobee app; includes free software upgrades.
- Automatically adapts to your schedule, saving energy while optimizing comfort at home.
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#3
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- Compatible with 95% of heating and cooling systems, excluding electric baseboard heaters; verify compatibility via QR code before purchase.
- Requires a C-wire for functionality; compatible C-wire adapter available for systems without a C-wire; only supports 2.4GHz Wi-Fi networks.
- Customizable scheduling with up to 7-day, 24-hour routines, maintaining comfort even during Wi-Fi outages.
- Integrates with major smart home platforms, including Apple Home, Amazon Alexa, and Google Home, with data security ensured by Matter technology.
- Remote monitoring and control via a dedicated smart app, providing convenience from anywhere.
- Smart alerts for system performance and malfunctions to ensure reliable operation.
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- Compatible with 95% of heating and cooling systems, excluding electric baseboard heaters; verify compatibility via QR code before purchase.
- Requires a C-wire for functionality; compatible C-wire adapter available for systems without a C-wire; only supports 2.4GHz Wi-Fi networks.
- Customizable scheduling with up to 7-day, 24-hour routines, maintaining comfort even during Wi-Fi outages.
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#4
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- Can reduce annual heating and cooling costs by up to 26% while being ENERGY STAR certified.
- Automatically adjusts to your schedule, preheating or precooling your home for optimal comfort when you arrive.
- User-friendly installation process; most individuals can complete setup in under 45 minutes without professional help.
- Durable design ensures long-lasting performance without the need for battery replacements, supported by 7-day a week customer service.
- Optional SmartSensor available for monitoring temperature and movement in specific rooms, enhancing energy savings.
- Compatible with a wide range of HVAC systems and includes a Power Extender Kit for homes without a C-Wire, facilitating simple installation.
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- Can reduce annual heating and cooling costs by up to 26% while being ENERGY STAR certified.
- Automatically adjusts to your schedule, preheating or precooling your home for optimal comfort when you arrive.
- User-friendly installation process; most individuals can complete setup in under 45 minutes without professional help.
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#5
27% Off
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- Customize the Wi-Fi Smart Color Thermostat to match your home décor.
- Inquire about energy provider rebates to save energy and potentially earn rewards.
- Flexible programming options to suit your schedule and utility rates.
- Bright, easy-to-read touchscreen for simple operation.
- Compatible with various heating systems; requires C-Wire for installation.
- Seamless smart home integration with Amazon Alexa and Google Home.
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- Customize the Wi-Fi Smart Color Thermostat to match your home décor.
- Inquire about energy provider rebates to save energy and potentially earn rewards.
- Flexible programming options to suit your schedule and utility rates.
- Bright, easy-to-read touchscreen for simple operation.
- Compatible with various heating systems; requires C-Wire for installation.
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#6
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- High-resolution 4.3" color touchscreen for easy reading and operation, with automatic brightness adjustment based on room lighting.
- Remote and voice control capability via Vine Thermostat App or Smart Life App; compatible with Alexa and Google Home for hands-free operation.
- Program schedules for 7 days with Auto Home/Away mode to maintain comfort and reduce HVAC costs.
- Compatible with 90% of 24V AC systems, including conventional, heat pumps, and some heating-only systems; requires a common wire (C-Wire).
- Includes features like data encryption, OTA support, Wi-Fi auto-reconnect, fan control, and weather forecasting for enhanced convenience.
- Simple installation process taking 20 minutes or less, supported by online guides and videos.
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- High-resolution 4.3" color touchscreen for easy reading and operation, with automatic brightness adjustment based on room lighting.
- Remote and voice control capability via Vine Thermostat App or Smart Life App; compatible with Alexa and Google Home for hands-free operation.
- Program schedules for 7 days with Auto Home/Away mode to maintain comfort and reduce HVAC costs.
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#7
8% Off
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- View monthly energy consumption reports to help save electricity.
- Automate energy savings by connecting the thermostat to your utility account and checking seasonal rewards eligibility.
- Control your thermostat remotely and utilize geofencing for automatic scheduling based on your location.
- Enhance comfort by using Smart Room Sensors to manage temperatures in different rooms (sold separately).
- Learn your home's heating and cooling preferences for optimal temperature management and receive alerts for filter changes and temperature adjustments.
- Compatible with various heating systems, including forced air and heat pumps; requires C-wire for operation with certain systems.
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- View monthly energy consumption reports to help save electricity.
- Automate energy savings by connecting the thermostat to your utility account and checking seasonal rewards eligibility.
- Control your thermostat remotely and utilize geofencing for automatic scheduling based on your location.
- Enhance comfort by using Smart Room Sensors to manage temperatures in different rooms (sold separately).
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#8
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- ENERGY STAR certified for energy efficiency, offering personalized heating and cooling insights.
- Remote control via app and compatibility with smart home devices including Alexa and Google Assistant for flexible home automation.
- Customizable high-definition color display for personalized aesthetics.
- Displays indoor/outdoor temperature, humidity, and daily weather forecasts on the home screen.
- Compatible with various heating systems but not suitable for electric baseboard heat; ensure compatibility and C-wire requirement before purchase.
- Fan control options include constant, automatic, or circulating modes for tailored air circulation.
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- ENERGY STAR certified for energy efficiency, offering personalized heating and cooling insights.
- Remote control via app and compatibility with smart home devices including Alexa and Google Assistant for flexible home automation.
- Customizable high-definition color display for personalized aesthetics.
- Displays indoor/outdoor temperature, humidity, and daily weather forecasts on the home screen.
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#9
26% Off
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- ENERGY STAR certified smart thermostat that enhances energy efficiency and comfort.
- Automatically adjusts temperature settings when you leave home to conserve energy.
- Programmable scheduling available via the Google Home app for tailored energy savings.
- Remote access allows users to adjust settings from smartphones, laptops, or tablets.
- Savings Finder feature identifies potential savings and suggests schedule adjustments.
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- ENERGY STAR certified smart thermostat that enhances energy efficiency and comfort.
- Automatically adjusts temperature settings when you leave home to conserve energy.
- Programmable scheduling available via the Google Home app for tailored energy savings.
- Remote access allows users to adjust settings from smartphones, laptops, or tablets.
- Savings Finder feature identifies potential savings and suggests schedule adjustments.
#10
11% Off
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- Customers saved 8-16% on heating and cooling bills using the scheduling feature, with actual savings varying based on usage.
- Eligible users can check for energy savings rebates and participate in utility demand response programs.
- The thermostat offers 7-day flexible scheduling and location-based temperature control using geofence technology.
- Auto mode adjusts temperatures while home and saves energy when away.
- ENERGY STAR certified with monthly energy reports and personalized tips for reducing energy use.
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- Customers saved 8-16% on heating and cooling bills using the scheduling feature, with actual savings varying based on usage.
- Eligible users can check for energy savings rebates and participate in utility demand response programs.
- The thermostat offers 7-day flexible scheduling and location-based temperature control using geofence technology.
- Auto mode adjusts temperatures while home and saves energy when away.
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