9 Best Smart Thermostats of 2026

The Enhanced keeps the parts of the Premium that matter most for energy bills. Radar sensing in the thermostat detects when people are home, so it can turn down heating or cooling when the house is empty, and ecobee gives it the same savings claim of up to 26%, or up to $284 a year. It can also run heating or cooling when energy is cheaper and adjusts for humidity so a room feels like the temperature you set. The 4 inch touchscreen, dual-band Wi-Fi and Power Extender Kit match the Premium. What you give up is the included SmartSensor, air quality monitoring and the metal frame. It supports 2H/2C conventional systems, heat pumps with one stage of auxiliary heat and a one-wire accessory such as a humidifier. At $199.99, it is the best value among the thermostats with built-in occupancy sensing. We compared documented features and published prices.

The Premium ranks first because it does the most to cut bills without asking you to manage it. Radar sensing in the thermostat and the included SmartSensor tell it when rooms are occupied, so it can reduce heating or cooling when the home is empty and focus on the rooms in use when it is not. Ecobee says it can save up to 26% on heating and cooling costs, or up to $284 a year. The 4 inch touchscreen sits in a metal body, air quality monitoring sends alerts and filter reminders, and Siri and Alexa are built in. It handles 2H/2C conventional systems, heat pumps with 2 stages of auxiliary heat, and one humidifier, dehumidifier or ventilator accessory. The Power Extender Kit in the box covers most homes without a C wire. The thermostat can also act as a home security hub, but that needs a paid ecobee plan. We compared documented features and published prices.

The fourth-generation Nest Learning Thermostat is the most hands-off option here. Smart Schedule learns the temperatures you set and when, then suggests small changes in the Google Home app to save more. Adaptive Eco picks an efficient temperature when you leave, a Soli sensor detects motion, and natural heating and cooling uses the outdoor temperature to avoid running the system on sunny days. Google says the Learning Thermostat can save up to 31% on heating and cooling bills. A Nest Temperature Sensor (2nd gen) comes in the box, and you can add up to six. Wiring support is the broadest on the list: up to 3 stages of heat and cool, heat pumps with auxiliary heat, and humidifier, dehumidifier and ventilation control, with Power Sharing that avoids a C wire in almost every home. At $279.99 it costs the most here, and the retail warranty is 2 years. We compared documented features and published prices.

The Nest Thermostat is the simplest way into Google's savings features. You set a Quick Schedule in the Google Home app, the thermostat turns itself down when the house is empty, and Savings Finder suggests small schedule changes. Google says Nest thermostats can save up to 31% on heating and cooling bills. It works with most 24V systems, including furnaces, air conditioners, boilers and heat pumps with aux heat, and it is designed to run without a C wire, although heating-only, cooling-only and zoned systems may need a power accessory. It is Matter certified and works with Hey Google and Alexa. The limits are about comfort rather than savings: it cannot use Nest room sensors, it does not learn a schedule on its own, and it supports fewer stages than the Learning Thermostat. At $129.99, it is a strong value for single-zone homes. We compared documented features and published prices.

The Essential is ecobee's lowest-priced thermostat, and it keeps the ecobee app and smart home support that make the range easy to live with. It runs on your schedule for home, away and sleep, can start heating or cooling early so the house reaches the set temperature on time, and runs the fan after each cycle to use leftover heat or cooling. Ecobee says it can cut energy bills by up to 23%, or up to $250 a year. It works with Apple HomeKit, Google Assistant and Alexa, which few rivals at this price match, and with ecobee SmartSensors if you add them. The trade-offs show in the hardware: there is no occupancy sensor in the thermostat, Wi-Fi is 2.4 GHz only, and it supports 2H/1C or 1H/2C conventional systems and 2H/1C heat pumps. Homes without a C wire need the Power Extender Kit, sold separately. We compared documented features and published prices.

Mysa built its name on baseboard and mini-split thermostats, and its central HVAC model brings the same app to furnaces, central air and heat pumps. Mysa says it works with 95% of standard 24V systems, including conventional systems with 2 stages of heat and cool, heat pumps with auxiliary heat, dual-fuel setups and boilers, and that it installs in 20 to 25 minutes. It is ENERGY STAR certified, and Mysa puts savings at 15 to 26% on heating and cooling. Matter certification means it connects directly to Apple Home, Alexa and Google Home with no hub. The app covers schedules, geofencing, monthly energy reports and shared access, and you can run Mysa baseboard or mini-split thermostats in the same account. It needs a C wire, Wi-Fi is 2.4 GHz only, and it cannot control humidifiers or ventilators. Room sensor support is not available yet. Coverage runs 5 years. We compared documented features and published prices.

The Sensi Touch 2 is a solid pick for homes with more complex equipment. It supports single-stage, multi-stage 2H/2C and heat pump systems up to 4 stages of heat and 2 of cool, and it can control both humidification and dehumidification, which most thermostats at this level cannot. It works with Sensi Room Sensors to balance temperatures, sold separately, and with an outdoor sensor for auxiliary heat lockout. Sensi says its ENERGY STAR certified thermostat saves about 23% on HVAC energy, based on a nationwide sample of users adjusting temperatures by an average of 4 degrees. The app adds geofencing, usage reports, equipment alerts and filter, humidifier pad and UV bulb reminders. It needs a C wire, works with Alexa, Google Assistant and SmartThings but not Apple HomeKit, and has a 3-year warranty. Copeland's store did not show a US price from our location, so the entry is marked as pending. We compared documented features and published prices.

The T5 covers the basics that save money for a little over $100. Geofencing uses your phone's location to hold off heating or cooling until you are on your way home, and Smart Response learns your routine and how long your system takes, so the house reaches the set temperature on time. You can follow a 7-day, 5-2 or 5-1-1 schedule instead. Monthly home energy reports compare your use with similar homes and suggest ways to cut it, and Honeywell supports utility rewards programs for extra savings. It works with Alexa, Apple HomeKit and Google Assistant, and it handles up to 2H/2C conventional and 3H/2C heat pump systems. The limits: there is no built-in occupancy sensor, geofencing depends on everyone's phone, Wi-Fi is 2.4 GHz only and the warranty is 2 years. Check whether you need Honeywell's C-wire adapter before you buy. We compared documented features and published prices.

The X2S is the lowest-cost way on this list to get a programmable thermostat you can control from your phone. It replaces Honeywell's RTH6580 and keeps things simple: you choose a 5-1-1 day, 5-2 day, 7-day or 1-week schedule, or turn scheduling off, and auto-away cuts heating or cooling while you are out. It connects over 2.4 or 5 GHz Wi-Fi to the Resideo Connect app and is Matter certified for Apple Home, with Alexa and Google Assistant support as well. It handles up to 2H/2C conventional systems, 2H/1C heat pumps with electric backup and hot water heat, and sends filter change and heat pump failure alerts. There is no learning, occupancy sensing or room sensor support, it needs a C wire, and it does not work with electric baseboard heat. For a straightforward schedule at $84.99, it is hard to beat on price. We compared documented features and published prices.