Top 10 Best Smart Thermostats of 2026

Save up to 26% per year on heating and cooling costs with ENERGY STAR certification.
SmartSensor (a $50 value) adjusts temperature in key rooms, reducing hot or cold spots to maintain comfort.
Built-in air quality monitor alerts you to poor air quality, offers tips to improve it, and reminds you when to change your furnace air filter.
Premium materials and advanced engineering deliver a large, vibrant display with a cinematic interface and a timeless design.
Includes occupancy sensing for enhanced convenience and comfort.
Monitors home security with built-in smoke alarm detection and alerts for potential break-ins when the system is armed.
Get notifications for sudden temperature drops that could cause damage (ecobee Smart Security plan required).
Works with Siri or Alexa Built-in for voice control and lets you listen to Spotify playlists and podcasts through the thermostat’s speaker.

The Google Nest Learning Thermostat (4th gen) offers advanced energy-saving features, helping reduce heating costs by 12% and cooling costs by 15%.
Works with most 24V systems including gas, electric, oil, forced air, heat pumps, and radiant, with no C wire required for installation in most homes.
Provides better control with notifications and schedule changes via the Google Home app, allowing easy adjustments with a tap.
Features a 60% larger display with Dynamic Farsight for clear visibility of important information from across the room; automatic brightness adjustment for optimal readability.
Simple control via the Google Home app, Alexa, or a Nest smart speaker, and compatible with Matter for seamless integration into your smart home.
Manages hot and cold spots with the included Nest Temperature Sensor (2nd gen), allowing you to control the temperature in specific rooms.
Uses natural heating and cooling by learning how external temperatures affect indoor comfort, pausing the system to save energy.
Includes the new Adaptive Eco feature, which uses outdoor temperature data to adjust energy-saving settings when you’re away.
Installation may not be as straightforward for some homes.

Save up to 26% annually on heating and cooling costs with ENERGY STAR certification by automatically adjusting the temperature when you’re away.
Preheats or precools your home before you arrive and adjusts based on your presence or sleep schedule for all-day comfort.
Humidity control ensures your home feels like the temperature you’ve set, no matter the moisture in the air.
Easy DIY installation with all necessary components included—most users complete setup in 45 minutes or less.
Control your thermostat remotely using your smartphone, tablet, or Apple Watch via the ecobee app and smart home platforms.
Hardwired design means no battery replacements or risk of losing control, plus long-lasting build quality designed to stay on your wall for over a decade.
Compatible with a wide range of 24VAC HVAC systems and includes a Power Extender Kit for homes without a C-wire.
Optional SmartSensor (sold separately) enhances temperature monitoring and energy savings by detecting occupancy and temperature in key rooms.
To fully optimize room-specific comfort and monitoring, the SmartSensor must be purchased separately.

Save money and energy with this ENERGY STAR certified thermostat by adjusting settings remotely or using Auto Home/Away Scheduling that learns your routine.
Eligible users can enroll in utility Demand Response Programs to earn rewards when allowing minor temperature adjustments during peak demand times.
Smart Room Sensors detect occupancy and allow you to set specific room temperatures, ensuring personalized comfort day and night.
Honeywell Home’s advanced sensor technology provides a strong, efficient signal with a range of up to 200 feet.
Multi-room focus ensures comfort across your home when using multiple sensors, so you’re not limited to just one room.
Control the T9 via the Resideo app or with voice assistants like Alexa, Google Assistant, and Apple HomeKit.
Compatible with a variety of systems including forced air (gas, oil, electric), hot water, steam, and heat pumps with electric backup.
Simple DIY installation with guided setup and a power adapter included as a low-voltage alternative to a C-wire.
Not compatible with electric baseboard heating or heating-only oil furnace systems without a C-wire.

ENERGY STAR certified smart thermostat that helps save energy while maintaining comfort, with remote control via phone, tablet, or laptop.
Automatically turns itself down when you leave to avoid heating or cooling an empty home, reducing unnecessary energy use.
Easily set and adjust energy-efficient schedules using the Google Home app on Android or iPhone.
Savings Finder feature suggests personalized tweaks to your schedule to help maximize savings; rebates may be available through your energy provider.
HVAC monitoring sends alerts and reminders if something seems off with your heating or cooling system, making maintenance easier.
Compatible with Google Assistant, Alexa, and all Matter-certified voice assistants for hands-free temperature control.
Supports Nest Renew, helping you prioritize energy usage when it’s cleaner or less expensive for an environmentally friendly home.
Works without a C wire in most homes, and setup is simplified with compatibility tools and support from Google.
Some systems—like heating-only, cooling-only, zone-controlled, or heat pumps—require a C wire or additional power accessory.

Compatible with Sensi Room Sensors (sold separately) to help balance temperatures and improve comfort throughout your home.
ENERGY STAR certified and designed to help reduce HVAC energy use by about 23% with features like flexible scheduling and remote access.
Respects your privacy by ensuring personal information is never sold to third parties.
Easy DIY installation with step-by-step guidance through the highly rated Sensi app, using Bluetooth for a smoother setup experience.
Works with a wide range of HVAC systems commonly found in homes, offering broad compatibility.
Smart maintenance features include equipment performance monitoring, usage reports, and timely maintenance alerts like filter replacement reminders.
Remote control through the app allows you to manage temperature and scheduling from anywhere.
Provides detailed energy usage reports to help you track efficiency and make informed adjustments.
Requires a C-wire for installation, which may not be readily available in older or simpler HVAC systems.

Save up to 23% annually on heating and cooling costs compared to a constant hold of 72°F.
Control your thermostat remotely from your Android or iOS device for convenience wherever you are.
Add a SmartSensor (sold separately) to target hot or cold spots and improve comfort in the rooms that matter most.
Automatically pauses heating or cooling when a door or window is left open (requires SmartSensor for doors and windows and a Smart Security subscription).
Recognized as an ENERGY STAR Partner of the Year, highlighting its commitment to energy efficiency.
Integrates easily with popular smart home systems and supports Wi-Fi connectivity (802.11 b/g/n @ 2.4 GHz).
Compatible with most 24VAC HVAC systems including furnaces, ACs, heat pumps, boilers, PTACs, and fan coil units; includes a Power Extender Kit for homes without a C-wire.
Features secure connectivity with DHCP or static IP addressing and 168-bit SSL encryption for data protection.
Full functionality, including door and window detection, requires separate sensors and a paid Smart Security subscription.

Personalize your thermostat’s appearance to match your décor with a customizable, bright, and easy-to-read touchscreen interface.
ENERGY STAR certified to help you save energy, track heating and cooling usage, and receive monthly reports with personalized energy-saving tips.
Flexible programming options let you create schedules based on your routine or your utility’s peak rate pricing.
Eligible users can enroll in their local utility’s Demand Response Program and earn rewards for allowing small temperature adjustments during high energy demand.
Works with Amazon Alexa, Google Home, and the mobile app, so you can control your home’s temperature remotely from anywhere.
Compatible with most HVAC systems including forced air (gas, oil, electric), hot water, steam, and heat pumps with electric backup.
Fan control modes include On, Automatic, and Circulate for better airflow management based on your needs.
Easy operation with intuitive controls and visual guidance; check compatibility and C-wire requirements before purchase.
Not compatible with electric baseboard heating or heating-only oil furnace systems unless a C-wire is present.

Designed specifically for high/line voltage electric heating systems (120-240V), including baseboard and fan-forced heaters, making it ideal for homes with electric heat.
Save up to 26% on energy costs by using the Mysa app to create customized heating schedules that align with your daily routines.
Control your home’s temperature from anywhere with Mysa’s 100% free app—no hidden fees or subscriptions required.
Compatible with major smart home platforms including HomeKit, Alexa, and Google Home, allowing for seamless voice control and automation.
Simple DIY installation with detailed video instructions and access to expert support, including certified electricians, if needed.
Engineered in Canada to handle North American weather conditions and built with strong cybersecurity standards for added peace of mind.
Offers superior Wi-Fi connectivity designed for 2.4 GHz networks, and supports combined 2.4/5 GHz and MESH setups for stable performance.
Features on-unit controls so you can adjust temperature directly without relying on a phone or app.
Only compatible with high-voltage systems and requires at least four wires not suitable for low-voltage or two-wire setups.

Easy DIY installation with built-in level and step-by-step instructions, making setup fast and straightforward for most homeowners.
Compatible with most home HVAC systems, simplifying the upgrade process for many households.
ENERGY STAR certified and helps save about 23% on HVAC energy costs with flexible scheduling, geofencing, remote access, and detailed usage reports.
Remote control via a highly rated mobile app for Android and iOS, so you can manage your home’s comfort from anywhere.
Offers strong privacy protection—Sensi won’t sell your personal data or use thermostat activity for targeted ads.
Supports geofencing, allowing the thermostat to adjust based on your phone’s location to save energy automatically when you’re away.
Provides real-time usage insights and maintenance reminders to help keep your HVAC system running efficiently.
Designed with convenience and energy efficiency in mind, supporting modern lifestyles and smart home goals.
C-wire is required for heat pump and heat/cool only systems, which might not be available in all homes.