10 Best Smart Thermostats 2025 in the United States

The Google Nest Learning Thermostat (4th Gen, 2024) stands out with its enhanced learning capabilities and broad compatibility. It supports a wide range of heating and cooling systems without needing a C wire for most installations, which simplifies the setup process for many users.

The learning feature is particularly notable as it allows the thermostat to adapt to your schedule and preferences, potentially offering significant savings on energy bills. Moreover, the inclusion of the Nest Temperature Sensor helps manage temperature variations in different rooms effectively, ensuring a more comfortable home environment.

Integration with smart home systems is seamless, especially with support for both Alexa and Google Home, making remote access and control straightforward via the Google Home app or voice commands. The polished obsidian design, larger display, and Dynamic Farsight feature add to its aesthetic appeal, making it not just functional but also a visually pleasing addition to your home. Despite minor drawbacks like the reliance on a battery and a slightly steep initial learning curve, the Google Nest Learning Thermostat (4th Gen) is a strong contender for enhancing home energy efficiency and comfort with advanced smart home technology.

The ecobee New Smart Thermostat Premium is a versatile option for anyone looking to upgrade their home climate control system. Its standout feature is the SmartSensor, which optimizes the temperature in key rooms and helps eliminate hot or cold spots. Additionally, the built-in air quality monitor is a nice touch, providing alerts and tips to maintain a healthy living environment. Compatibility is broad, supporting most 24VAC HVAC systems, and the included Power Extender Kit makes it easier to install in homes without a C-wire.

Integration with Siri, Alexa, and Google Assistant ensures seamless control via voice commands, and the option to use it as a smart speaker adds value. The ability to save up to 26% on heating and cooling costs is particularly appealing for those focused on energy efficiency. However, some features, like advanced security notifications and geofencing, require subscriptions to ecobee's Smart Security plan. Also, while the Siri functionality is handy, it does require an Apple home hub.

The design is visually appealing with a vibrant display and modern look, but the installation might be a bit daunting for those not familiar with electrical work. Despite these caveats, the ecobee New Smart Thermostat Premium offers a robust set of features that should satisfy most smart home enthusiasts.

The ecobee New Smart Thermostat Enhanced is a robust option for those looking to save on heating and cooling costs, boasting an impressive potential saving of up to 26% per year. Its Energy Star certification underpins its efficiency and environmental benefits. This thermostat has notable learning capabilities, automatically adjusting the temperature based on occupancy and optimizing comfort by accounting for humidity and preheating or precooling your home before you arrive.

The integration with major smart home systems, including Siri, Alexa, and Google Assistant, ensures seamless remote access and control through the ecobee app on various devices like smartphones and smartwatches, enhancing convenience. The installation process is user-friendly, typically taking around 45 minutes, and the provided Power Extender Kit makes it adaptable for homes without a C-wire. The hardwired design eliminates concerns about battery replacements, although it does include a lithium-ion battery.

A potential downside is that it doesn’t come with the SmartSensor, which is sold separately but can significantly enhance temperature monitoring in important rooms. The thermostat's compatibility with a wide range of HVAC systems adds to its versatility. Despite the initial cost and the need for additional purchases like the SmartSensor being potential drawbacks, its durability, backed by a 3-year warranty and quality materials, makes it a long-lasting investment for home climate control.