10 Best Smart Thermostats 2025 in the United States

The Amazon Smart Thermostat is a solid choice for anyone looking to upgrade from a traditional thermostat to a smart option that helps save money and energy. One of its key strengths is its compatibility with Alexa and Ring, which allows for easy voice control and integration into your smart home ecosystem. The thermostat’s learning capabilities are impressive; it can adapt to your schedule and preferences over time, optimizing temperature settings automatically based on your presence at home. The energy-saving features, including potential rebates from energy providers, make it appealing for those looking to lower utility bills.

Installation is designed to be user-friendly, with guidance available through the Alexa app, making it accessible even for those who might not be particularly handy. The ability to monitor energy usage and receive automatic reminders for air filter replacements adds another layer of convenience.

There are some limitations to consider. The requirement for a C-wire for installation might be a hurdle for some users, particularly in older homes where this wiring isn’t always standard. It's also worth noting that while it works with 2.4 GHz networks, it does not support 5GHz connections, which may limit compatibility with some modern routers. Additionally, while the thermostat can work with temperature sensors through compatible Echo devices, it does not include a built-in microphone, meaning you will need to rely on an Alexa-enabled device for voice commands. The reliance on the Alexa app for many features may also deter those who prefer a more standalone experience.

The Google Nest Thermostat is a smart thermostat designed to help you save energy and stay comfortable. It is ENERGY STAR certified, which means it meets energy efficiency guidelines. One of its main strengths is its compatibility with various heating and cooling systems, although some systems may require a C wire or another compatible power accessory for installation. The thermostat's learning capabilities allow it to turn itself down when you leave, preventing energy waste.

Additionally, you can program an energy-efficient schedule through the Google Home app, available on both Android and iPhone devices. Remote access is another advantage, enabling you and your family members to control the temperature from anywhere using a phone, laptop, or tablet. The Nest Thermostat also features HVAC monitoring, which alerts you if something is wrong with your heating or cooling systems and provides maintenance reminders. Integration with smart home systems is seamless, as it works with Google Assistant, Alexa, and other Matter-certified voice assistants. You can even control the temperature with your voice using compatible smart devices.

Geofencing is another useful feature, ensuring the thermostat adjusts based on your location. Installation is relatively easy, and the product includes mounting screws, a steel plate, and a documentation bundle to assist you. However, it is important to check compatibility before purchasing. The Google Nest Thermostat is a well-rounded product with a sleek design and user-friendly features, making it a great choice for those looking to optimize their home's energy efficiency.

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.