The 7 Best Smart Thermostats With Eco Mode of 2026

The ecobee Smart Thermostat Essential is a programmable Wi-Fi thermostat designed for homeowners looking to cut energy costs without sacrificing comfort. Energy Star certified, it works with 85% of home HVAC systems, including gas, oil, electric, and heat pumps. Ideal for those integrating into smart homes with Siri, Alexa, or Google Assistant, it automatically adjusts temperatures based on your schedule, saving up to 23% on bills compared to constant 72-degree holds.

Standout features include eco+ smart algorithms for humidity detection, schedule optimization, and time-of-use precooling or preheating during cheaper energy periods. Users control it via a vibrant color touchscreen or the ecobee app, which tracks usage on the go. Real-world performance shines in maintaining even comfort while reducing waste, with free software updates ensuring long-term reliability.

Design is sleek and modern, with easy DIY installation; a Power Extender Kit handles no-C-wire setups. Build quality feels premium, and optional SmartSensors add room-by-room precision. Drawbacks include needing to verify system compatibility online and separate purchases for accessories like the PEK or sensors.

Overall, this thermostat delivers proven savings and smart convenience, earning its solid reputation for value-driven smart home upgrades. Recommended for budget-conscious users prioritizing efficiency.

Works with most 24 VAC HVAC: gas, oil, electric, dual fuel, forced air (2H/1C or 1H/2C conventional; 2H/1C heat pump), and boilers. Use ecobee's online Compatibility Checker for your system.

Integrates with Apple HomeKit, Google Assistant, Alexa. Add SmartSensors for multi-room control (sold separately).

The ecobee Smart Thermostat Enhanced is a programmable WiFi thermostat designed for homeowners looking to upgrade their HVAC control with smart automation. It targets those with compatible 24VAC systems who want energy savings without sacrificing comfort, integrating smoothly into Apple HomeKit, Amazon Alexa, Google Assistant, and SmartThings ecosystems.

Standout features include eco+ algorithms that save up to 26% on bills by adjusting temperatures when away or asleep, plus radar occupancy sensing for wider detection and preemptive adjustments. In real-world use, it learns schedules and humidity preferences, ensuring your home is ideal upon return, while SmartSensors expand room-specific control.

Build quality shines with a hardwired setup for reliability over 10 years, no battery replacements needed, and a clean design with included PEK and Trim Kit for straightforward DIY installs on most systems.

Potential drawbacks include needing the compatibility checker for non-standard HVAC like high-voltage setups, and it's not as feature-rich as premium models with air quality monitoring.

Overall, this thermostat delivers reliable smart comfort and savings, making it a strong choice for efficient smart homes.

Check compatibility with up to 90% of 24VAC HVAC systems using RC, RH, W1, W2, Y1, Y2, C, O/B, PEK+, G, ACC+, ACC-. Includes Power Extender Kit for homes without C-wire and Trim Kit.

Incompatible with line voltage (110/220V), millivolt, or 0-10VDC systems. Use ecobee's online checker and input your wire labels for confirmation.

Supports gas, oil, electric, dual fuel, forced air (2H/2C), heat pumps (3H/2C), and boilers.

WiFi: Dual-Band. Voice: Siri, Alexa, Google Assistant, HomeKit. Warranty: 3 Years. Sensors: Radar occupancy. Energy: Up to 26% savings vs. 72°F hold. Install: DIY with PEK included.

The Sensi ST55 smart thermostat brings professional-grade HVAC control to everyday homeowners through a simple Wi-Fi enabled device. Designed for those upgrading to a smart home without hassle, it works with most residential systems and emphasizes data privacy alongside energy efficiency. Ideal for tech-savvy renters or owners seeking control via app or voice with Alexa.

Standout features include easy DIY installation using step-by-step app instructions and a built-in level, often without a common wire. It delivers flexible scheduling, remote access, usage reports, and smart maintenance alerts to optimize performance and catch issues early. Energy Star certification supports about 23% savings on bills, proven through real-world flexible programming and system monitoring.

Build quality reflects 100 years of Sensi expertise, with a straightforward design that mimics traditional thermostats, complete with buttons, backlight, and keypad lockout. It integrates smoothly without altering wall spaces, ensuring a clean look.

Drawbacks include potential c-wire needs for certain systems and reliance on 2.4 GHz Wi-Fi. Still, its reliability and privacy focus outweigh these for most users.

Verdict: A top choice for effortless smart thermostat upgrade, balancing ease, savings, and security effectively.

Model: ST55

Power Source: Battery or C-wire

Connectivity: 2.4 GHz Wi-Fi

Dimensions: 5.875 x 3.75 x 1.0 inches

Features: Remote access, usage reports, Energy Star certified, smart alerts, keypad lockout, backlight display

Compatibility: Most residential HVAC, works with Alexa

The Sensi ST55 smart thermostat brings professional-grade HVAC control to everyday homeowners through a simple Wi-Fi enabled device. Designed for those upgrading to a smart home without hassle, it works with most residential systems and emphasizes data privacy alongside energy efficiency. Ideal for tech-savvy renters or owners seeking control via app or voice with Alexa.

Standout features include easy DIY installation using step-by-step app instructions and a built-in level, often without a common wire. It delivers flexible scheduling, remote access, usage reports, and smart maintenance alerts to optimize performance and catch issues early. Energy Star certification supports about 23% savings on bills, proven through real-world flexible programming and system monitoring.

Build quality reflects 100 years of Sensi expertise, with a straightforward design that mimics traditional thermostats, complete with buttons, backlight, and keypad lockout. It integrates smoothly without altering wall spaces, ensuring a clean look.

Drawbacks include potential c-wire needs for certain systems and reliance on 2.4 GHz Wi-Fi. Still, its reliability and privacy focus outweigh these for most users.

Verdict: A top choice for effortless smart thermostat upgrade, balancing ease, savings, and security effectively.

Model: ST55

Power Source: Battery or C-wire

Connectivity: 2.4 GHz Wi-Fi

Dimensions: 5.875 x 3.75 x 1.0 inches

Features: Remote access, usage reports, Energy Star certified, smart alerts, keypad lockout, backlight display

Compatibility: Most residential HVAC, works with Alexa

The meross Smart Thermostat is designed for homeowners with standard 24V HVAC systems like furnaces, heat pumps, and air conditioners, offering WiFi connectivity and Matter support for seamless integration with Apple Home, Alexa, Google Home, and SmartThings. It excels in providing app-based remote control, voice commands, and customizable 24/7 schedules, making it perfect for those wanting to automate comfort and cut energy costs without multiple apps.

Standout features include energy usage tracking, smart alerts for filter life and malfunctions, and on-the-go adjustments via the meross app. Real-world performance shines in maintaining consistent temperatures while optimizing for occupancy, with users able to tweak settings like reversing valve for heat pumps directly in the app. Compatibility covers 95% of US homes, though verification of wiring like R, W, Y, G, C is essential.

Build quality features a sleek glass panel in black or white with adjustable screen brightness, blending into modern, minimalist, or farmhouse decors. Installation is straightforward with app instructions, but professional help may be needed for C-wire issues.

Drawbacks include the C-wire requirement for some configurations and exclusion of baseboard or millivolt systems. Overall, it delivers reliable smart functionality for energy-conscious users, earning strong potential for satisfaction in compatible setups.

Check your wiring: Fully compatible with R,W,C; R,W,G,C; R,W,Y,G,C and similar. For R,W,Y,G, a C-wire adapter is needed. Works with 24V HVAC but not baseboard heaters, millivolt, or two-wire systems. Only 2.4GHz WiFi supported.

Contact meross support for wiring verification or issues like blank screens from poor R/C connections.

The NEW Mysa Smart Thermostat targets homeowners with 24V central HVAC systems like furnaces, air conditioners, and heat pumps. It transforms basic climate control into a smart, efficient system via WiFi, offering 7-day scheduling, geofencing, and vacation modes without any hub or ongoing fees. Ideal for those seeking substantial energy savings and remote access through a top-rated app.

Standout features shine in real-world use: geofencing detects your absence to optimize temperatures, potentially saving 26% on bills and paying for itself in under a year. The app delivers detailed energy insights, humidity monitoring with alerts for issues like mold or frozen pipes, and shared access for households. Heat pump owners benefit from smart staging that balances efficiency and comfort.

Design-wise, its matte white, minimalist look with a soft-glowing adaptive LED display elevates wall aesthetics without distractions. Build quality is robust, backed by a 5-year hardware warranty and North American expert support, ensuring longevity over typical smart devices.

Drawbacks include the need for a C-wire (purchased separately) and pending Matter support for broader smart home ecosystems. DIY installation is straightforward with video guides but assumes basic wiring familiarity.

Overall, the Mysa Smart Thermostat earns high marks for value, delivering pro-grade features at an accessible level. It's a smart upgrade for efficiency-focused homeowners ready to cut costs and enhance comfort.

Mysa works with most 24V central HVAC systems including furnaces, AC units, and heat pumps (with or without auxiliary heat). Requires a C-wire for power.

• Compatible Systems: Central Heating & Cooling, Heat Pumps
• Voltage: 24V
• Connectivity: Bluetooth, WiFi, NFC
• Controls: Touch-enabled, supports °C/°F
• Smart Features: 7-Day Scheduling, Geofencing, Home/Vacation Mode, Lockable Control

Compare with Mysa's lineup for electric baseboards or in-floor heating.

The Lux TQX Thermostat is a programmable smart WiFi model designed for modern homeowners with multi-room setups and existing smart home systems. It includes one remote sensor out of the box and supports up to five total, making it ideal for those seeking energy-efficient whole-home climate control without being tied to a single app ecosystem thanks to Matter compatibility.

Standout features like millimeter wave occupancy detection, smart routine learning, and remote temperature monitoring deliver real-world performance by turning off cooling when away and pre-heating before return, potentially saving up to $130 yearly. Voice control via Alexa, Google, or Apple Home works smoothly through a Matter hub, while the app enables remote scheduling and adjustments for ultimate convenience.

Build quality shines with a premium black glass display featuring auto-brightness via light sensor and occupancy-based wake-up, plus a secure PIN keypad lockout. Installation is straightforward with included C-wire adapter and wall plates, compatible with diverse HVAC systems like 4H/2C heat pumps and PTAC units.

Drawbacks include the need to buy extra sensors separately and its collective temperature averaging rather than zoned control per room. Overall, the Lux TQX earns high marks for flexibility and intelligence, strongly recommended for tech-savvy users prioritizing savings and comfort.

Built-in occupancy and humidity sensors with support for up to 5 remote sensors for comprehensive monitoring.

Matter over WiFi for integration with major smart home platforms including app and voice control.

Auto-learning schedules, intelligent display adjustments, and keypad security enhance daily usability.

Compatible with a wide range of HVAC systems, excluding line voltage setups.

Works with Alexa, Apple Home, Google Home via Matter controllers or smart speakers.

HVAC: Up to 4H/2C heat pumps, PTAC, fan coils, 2 aux outputs for humidifiers or ventilation.

Pair with Lux smart sensors for full potential; includes C-wire power bridge.

The EdgeAnt Smart Thermostat is a WiFi-connected device designed for modern homes, featuring a vibrant 4.3-inch touch screen and compatibility with Alexa and Google Assistant. It targets homeowners with standard HVAC systems who want programmable control to optimize comfort and cut energy costs, requiring a C-wire for power.

Standout features include 7-day x 8-period scheduling via the app, delivering up to 25% energy savings through automatic adjustments for home and away modes. Voice commands enable hands-free operation, while smart alerts notify about temperature swings, filter changes, and more. Real-world performance shines in remote monitoring, helping users maintain ideal conditions and avoid issues like frozen pipes.

Build quality impresses with an intuitive interface suitable for seniors and a sleek design perfect for rentals. The touch screen responds smoothly, and app integration provides detailed energy insights without complexity.

Drawbacks center on strict compatibility: it skips line-voltage, millivolt, or non-standard systems, so use the provided checker tool first. Installation assumes basic wiring knowledge.

Overall, this thermostat earns high marks for smart features and savings potential, making it a solid pick for compatible setups seeking effortless home automation.

Before buying, visit support.edgeant.com/check/ to verify your system. Input current wire labels and check for these incompatibilities: 2-wire heat-only, electric baseboard (120-240V), line-voltage, millivolt, 0-10VDC, or non-standard labels like 1,2,3 or A,B,C. A common C-wire is required; humidifiers and dehumidifiers are not supported.

Use the online tool for wire labels and system checks to ensure seamless installation and avoid returns.

Screen: 4.3-inch touch display. Connectivity: WiFi, compatible with Alexa and Google Assistant. Programming: 7-day x 8-period schedules. Power: C-wire required. Features: App control, smart alerts, energy monitoring, child lock, filter reminders.