10 Best Wifi Thermostats 2025 in the United States

The ecobee New Smart Thermostat Premium stands out in the wifi thermostat category, primarily due to its energy-saving capabilities and smart features. Users can save up to 26% on heating and cooling costs, thanks in part to its SmartSensor that targets temperature adjustments in specific rooms, which is great for maintaining comfort across different areas of the home. The built-in air quality monitor is a significant plus, alerting users to poor air quality and reminding them to change filters to ensure a healthier environment.

Installation is straightforward, with compatibility across most HVAC systems, and the included Power Extender Kit makes it accessible for homes without a C-wire. This means many homeowners can set it up without needing additional help. The large, vibrant display is user-friendly, showcasing a cinematic interface that makes navigation easy even for those not tech-savvy.

The thermostat integrates seamlessly with smart home systems like Apple HomeKit, Google Assistant, and Amazon Alexa, allowing voice control, which enhances convenience. However, to utilize Siri, an Apple home hub is necessary, which could be a limitation for users not already invested in Apple's ecosystem. The thermostat does require a subscription to access some functionalities like advanced security alerts and smart monitoring, which might deter some users due to additional costs. Furthermore, its reliance on Wi-Fi means that any network issues could affect performance.

The Amazon Smart Thermostat offers a straightforward way to upgrade from a traditional thermostat, especially for those who want to save energy and money. It works with most 24V HVAC systems but requires a C-wire or an additional power adapter, which is important to check before buying. Installation is guided through the Alexa app and is relatively simple, though some tools like a power drill might be needed. The user interface is basic with just three touch buttons on the device itself, but it is complemented by easy remote control via the Alexa app or voice commands through Alexa-enabled devices. This means you can adjust your home's temperature from anywhere, which is convenient.

It integrates well with Amazon's smart home ecosystem and supports temperature sensors from compatible Echo devices to better manage hot and cold spots. Energy-saving features are strong, as it is ENERGY STAR certified and uses Alexa’s smart learning to adjust temperatures automatically based on your routines. However, it doesn't have a built-in microphone, so voice control requires another Alexa device. The display is minimal and focused on simplicity rather than rich visuals.

It connects only to 2.4 GHz WiFi networks, which could be a limitation if your home primarily uses 5 GHz WiFi. If you’re already using Alexa or Ring devices, this thermostat fits nicely into that setup and is an affordable, energy-efficient choice. For those seeking a thermostat with a more advanced screen or broader WiFi compatibility, exploring other options may be worthwhile.

The Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat stands out in the Wi-Fi thermostat category with its excellent compatibility, working seamlessly with popular smart home systems like Alexa, Google Home, and SmartThings. This versatility allows users to integrate it easily into existing smart home setups. Installation is generally straightforward, making it accessible even for those not particularly tech-savvy. The customizable touchscreen display is a major highlight, offering vibrant colors and easy visibility, along with the ability to view local weather and humidity levels.

In terms of energy-saving features, this thermostat is Energy Star certified and supports flexible programming to help users optimize heating and cooling schedules according to their preferences and utility pricing. The intelligent alerts for maintenance tasks, such as air filter changes, are a nice touch that can help maintain system efficiency.

There are a few drawbacks to consider. Some users report that the initial setup can be slightly complicated, particularly for those unfamiliar with smart devices. While the touchscreen is generally user-friendly, those accustomed to traditional thermostats may take time to adjust. Additionally, while the device offers remote access via a smartphone app, some users have noted occasional connectivity issues. The display quality is generally praised, but the lack of a backlight can make it difficult to read in low-light conditions. This thermostat is well-suited for anyone looking to modernize their home heating and cooling while benefiting from smart technology integration and energy efficiency, but users should be prepared for a bit of a learning curve during initial setup.