10 Best Thermostats 2025 in the United States

The Amazon Smart Thermostat offers a user-friendly upgrade from traditional thermostats, especially for those who want to manage their home's temperature with smart technology. It works well with most 24V HVAC systems but requires a C-wire or a separate power adapter, which is important to check before purchasing. Installation is guided through the Alexa app, making it accessible for DIY users, although some basic tools might be needed.

This thermostat supports programmability with up to seven daily schedule periods, allowing you to tailor heating and cooling to your lifestyle. Smart features include compatibility with Alexa and Ring devices, and the ability to use certain Echo devices as temperature sensors to fix hot or cold spots in your home. Alexa’s “Hunches” feature learns your routine to automatically adjust temperatures when you’re away or asleep, adding convenience and potential energy savings.

The user interface is simple, with three touch buttons on the device and voice control available through Alexa-enabled devices. However, it lacks a built-in microphone, so voice commands require another Alexa device. Control is possible remotely via the Alexa app, letting you adjust settings on the go. ENERGY STAR certification supports its energy-saving features, with estimated savings of about $50 per year on energy bills. Amazon also provides information on local rebates, which can add extra savings. Note that it only connects to 2.4 GHz Wi-Fi networks and is not compatible with high-voltage systems like electric baseboard heating.

This thermostat is ideal for users seeking an affordable, reliable smart thermostat with solid Alexa integration and basic programmability. It works best in homes with compatible HVAC systems and for those comfortable using Alexa devices or apps for control.

The Google Nest Learning Thermostat (4th Gen) is an impressive option for anyone wanting to upgrade their home heating and cooling system. Its compatibility with a wide range of HVAC systems makes it versatile for most homes, and the installation process is user-friendly, typically taking around 40 minutes. The addition of the Nest Temperature Sensor enhances its ability to manage temperature variances in different rooms, which can greatly boost comfort.

One of its standout features is its programmability. The Smart Schedule learns your temperature preferences and adjusts automatically, which can lead to significant energy savings—averaging about 12% on heating and 15% on cooling bills. The Adaptive Eco function is particularly useful for optimizing energy use based on outdoor temperatures. The thermostat's user interface is another strong point. The borderless display is larger and brighter, making it easy to read from a distance. Plus, you can control the thermostat via the Google Home app or voice commands using Alexa or Google Assistant, adding to its convenience.

However, while this thermostat boasts many advanced features, there are a few drawbacks to consider. Some users may find initial setup and learning curves challenging, especially if they are not tech-savvy. It also requires a reliable Wi-Fi connection for optimal use of smart features, which could be a hindrance for some users. In terms of aesthetics, the polished silver finish is sleek and could complement various home decors, but personal preference comes into play here. Additionally, while it is marketed as energy-saving, the actual savings may vary depending on individual usage patterns and home insulation.

The ecobee New Smart Thermostat Premium is a feature-rich thermostat that aims to make your home more comfortable and energy-efficient. One of its standout features is its compatibility with various smart home systems like Siri, Alexa, and Google Assistant, making it easy to control with your voice. It also works with a wide range of HVAC systems, and even if your home doesn’t have a C-Wire, the included Power Extender Kit helps with easy installation. This makes it a versatile choice for many households.

Programmability is another strong point, as you can set schedules to optimize heating and cooling, potentially saving up to 26% on yearly energy costs. The included SmartSensor helps ensure the most important rooms in your home stay comfortable by adjusting temperatures to reduce hot or cold spots. The built-in air quality monitor is a unique feature that alerts you to poor air quality and reminds you to change your air filter, adding an extra layer of convenience and health benefits. The user interface is another highlight, featuring a large, vibrant display that is easy to navigate and visually appealing.

On the downside, some advanced features like smoke alarm detection and break-in alerts require a subscription to the ecobee Smart Security plan, which could be an additional cost. Additionally, to use Siri, an Apple home hub is required, which might not be ideal for non-Apple users. The smart speaker feature is a nice touch, but the sound quality might not replace your main speakers. In summary, the ecobee New Smart Thermostat Premium is a comprehensive and smart choice for those looking to upgrade their home’s heating and cooling system, with a few considerations around additional costs for some features.