10 Best Honeywell Smart Thermostats 2026 in the United States

The Honeywell Home RTH9600WF Smart Thermostat is a solid choice for users looking to enhance their home's heating and cooling efficiency. Its ENERGY STAR certification signifies that it helps reduce energy consumption, and it offers useful features like energy reports and personalized energy-saving tips. One of its major strengths is the ability to control the thermostat remotely via a smartphone app or compatible smart home devices like Amazon Alexa and Google Assistant, making it highly convenient for tech-savvy homeowners.

The customizable color touchscreen adds a touch of personalization, allowing users to match it with their home decor. Additionally, the on-screen display provides indoor and outdoor temperature readings, humidity levels, and daily weather forecasts, which many users find beneficial for maintaining comfort.

However, potential buyers should be aware of a few limitations. The thermostat requires a C-wire for installation, which might necessitate an additional power adapter if your home isn’t already set up for it. This could be a drawback for those with older heating systems or those who don't have a C-wire readily available. Moreover, while the compatibility covers various heating setups, it notably excludes electric baseboard heating systems, which can restrict its usability in some households.

The Honeywell Home X8S Premium Smart Thermostat stands out with its vibrant 5-inch customizable touchscreen that’s easy to read and stylish enough to blend with your home décor. It offers good compatibility, working with many heating and cooling systems (except electric baseboard heat), and links seamlessly to popular smart home platforms like Alexa, Google Assistant, and Apple HomeKit, making control from your phone or voice simple. The connectivity supports both 2.4 and 5 GHz Wi-Fi bands, which helps maintain a steady connection. A unique feature is the integration with select video doorbells, allowing you to see and talk to visitors right from the thermostat, which adds convenience beyond basic temperature control.

Its advanced sensors detect when you're home or away, adjusting settings automatically to improve comfort and save energy — plus, it includes a wireless room sensor to focus temperature control where it matters most. Humidity and ventilation controls also help enhance indoor air quality, though these may require extra equipment. While the thermostat supports energy-saving features and qualifies for ENERGY STAR rebates, it relies on a wired connection (C-wire), which might need additional installation if your system lacks one.

The app is user-friendly, though some users might find the setup process a bit involved due to the advanced features. The Honeywell X8S is a solid pick for those seeking a feature-rich smart thermostat that offers smart learning, good home integration, and extra perks like doorbell video access, but it may be less suitable if you need a completely wireless solution or simpler setup.

The Honeywell Home T9 WiFi Smart Thermostat presents a robust option for those seeking a smart thermostat with versatile features. Its compatibility is commendable, working with various heating and cooling systems, including forced air, hot water, steam, and heat pumps with electric backup. However, it does not support electric baseboard heat and requires a C-Wire for operation, which could be a limitation for some homes.

The thermostat excels in connectivity, offering control via the Resideo app, Amazon Alexa, Apple HomeKit, Google Assistant, and more, providing users with flexibility in managing their home environment. The learning capabilities are enhanced by Smart Room Sensors, which detect and prioritize comfort in occupied rooms, although the effectiveness can vary based on home construction and sensor placement within its 200 ft range. The user interface is user-friendly with a touchscreen display and easy installation guided by the app, making it accessible for non-tech savvy users.

Energy reports and the Energy Star certification are significant benefits, helping users save on energy costs, particularly with available energy rebates and participation in demand response programs. Geofencing capabilities allow the thermostat to adjust settings based on the user's location, further optimizing energy use. However, the reliance on batteries (2 AAA) for the sensors may be a minor inconvenience, requiring periodic replacements. Additionally, while the multi-room focus feature is advantageous, it necessitates additional sensors to function effectively. In summary, the Honeywell Home T9 WiFi Smart Thermostat is a comprehensive and user-friendly choice for those looking to enhance their home's efficiency and comfort, with minor limitations in compatibility and sensor dependency.