10 Best Home Thermostats 2025 in the United States

The Amazon Smart Thermostat is a solid choice if you're looking to upgrade from a traditional thermostat without complexity. It works with most 24V heating and cooling systems but requires a C-wire or a separate power adapter for installation, which might need extra effort if your home lacks one. The installation process is guided step-by-step within the Alexa app, making it approachable even for those who aren't handy, though tools like a drill might be needed.

Smart features stand out here: the thermostat integrates well with Alexa and compatible Echo devices, allowing voice control and automatic temperature adjustments based on your routines or when you’re away. It also supports using Echo devices as temperature sensors to balance different rooms, tackling hot or cold spots effectively. Energy efficiency is another strong point, as it is ENERGY STAR certified and can help save around $50 a year, with additional rebate options from some energy providers.

On the interface side, the thermostat has simple touch buttons for basic control, but full settings and scheduling are managed through the Alexa app, meaning you’ll need a smartphone to access its programmability fully. One limitation is its Wi-Fi connectivity, which only supports 2.4 GHz networks, not the faster 5 GHz bands common in modern homes. Plus, it lacks a built-in microphone, so voice commands depend on a separate Alexa device. For people comfortable with using Alexa and wanting an easy, energy-smart thermostat upgrade, this product fits well. However, if your home lacks a C-wire or if you prefer a thermostat with a more traditional standalone interface, you might need to consider these factors before buying.

The Google Nest Thermostat is a well-rounded smart thermostat designed for home use. One of its significant strengths is its energy efficiency, as it is ENERGY STAR certified and includes features like automatic temperature adjustments when you're not home and the Savings Finder to help lower energy costs. The thermostat is compatible with most systems, although some systems require a C wire or other power accessory, which could complicate installation for some users. On the plus side, Google provides an online Nest Compatibility Checker to help you verify if it will work with your system before purchasing.

Another standout feature is its smart capabilities, allowing you to control it remotely using the Google Home app on your smartphone, laptop, or tablet. It also integrates well with Google Assistant and Amazon Alexa, enabling voice control. The user interface is intuitive, making it easy to program and adjust settings. Additionally, the Nest Thermostat offers HVAC monitoring to alert you to any issues with your heating and cooling systems, enhancing its reliability. However, it lacks a lock feature, which might be a drawback for users needing to restrict access.

The thermostat's compact design is modern and unobtrusive, fitting well in most home decors. The Google Nest Thermostat is an excellent choice for those looking to save energy and integrate smart home features, though installation may require extra steps for specific systems.

The ecobee New Smart Thermostat Premium stands out in the home thermostat category due to its impressive energy-saving capabilities, with potential savings of up to 26% on heating and cooling costs, making it a smart choice for budget-conscious users. Its ENERGY STAR certification highlights its commitment to energy efficiency, which is increasingly important for eco-conscious consumers. The included SmartSensor is a notable advantage, as it effectively manages temperature in key rooms, reducing discomfort caused by hot or cold spots.

One of the standout features is the built-in air quality monitor that alerts users to changes in air quality and offers tips for improvement. This could be hugely beneficial for families with allergies or respiratory concerns. Additionally, the premium design and vibrant display offer a user-friendly experience, and compatibility with various smart home systems, including Siri, Alexa, and Google Assistant, adds to its appeal by allowing for voice control.

There are some considerations to keep in mind. While the thermostat can connect with a variety of HVAC systems, installation may be complicated for those without a C-wire, although the Power Extender Kit helps ease this issue. Some users may also find that the full range of features, like the smart security alerts, requires an additional subscription, which could be a drawback for those looking for a budget-friendly solution.